By linear algebra , we can find that number of people having access to safe drinking water is 6.1 million.
What is the purpose of linear algebra?The solution of linear systems of differential equations is facilitated by the use of linear algebra in conjunction with calculus. Analytic geometry, engineering, physics, the natural sciences, computer science, computer animation, and the social sciences all use methods from linear algebra (particularly in economics).
It is simpler to analyze linear systems involving differential equations by combining calculus with linear algebra. Techniques from linear algebra are used in many fields, including the social sciences, engineering, physics, computer science, and computer animation (particularly in economics).
equation,
p+1.9=7.0
p=7.0-1.9
p=6.1
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Monty works for a company that distributes multiple alcoholic beverages in the United States. Due to multiple events going on around the world, Monty has started wondering about the perceived home location of certain spirits. He takes a random sample of 135 people and find that 82 of them say that “Smirnoff” is produced in Russia. Monty takes a second random sample of 127 people and find that 74 of them say that “Stoli” is produced in Russia. At the .05 level of significance, is there a difference in the proportion of people who think Smirnoff is produced in Russia and the proportion of people who think Stoli is produced in Russia?
There is no evidence to reject the claim that there a difference in the proportion of people who think Red label is produced in Russia.
How to explain the critical value?It should be noted that we want to test the claim at 5% level of significance. The z critical value at 5% level of significance for two tailed test is 1.96.
The test statistic is 0.5. Since the z critical value is greater than the test statistic we do not reject the null hypothesis at 5% level of significance.
Therefore, we do not have enough evidence to reject the claim that there a difference in the proportion of people who think Red label is produced in Russia and the proportion of people who think Hennessy is produced in Russia.
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simplify
2/9 to the power of 2
[tex](\dfrac{2}{9} )^2[/tex]
Can be written as:
[tex]\dfrac{2}{9} \times\dfrac{2}{9}[/tex]
To multiply two fractions, you need to multiply the numerator by the numerator and multiply the denominator over the denominator.
Multiply:
[tex]\dfrac{2}{9} \times\dfrac{2}{9}[/tex]
[tex]\dfrac{2\times2}{9\times9}[/tex]
[tex]=\fbox{$\dfrac{4}{81} $}[/tex]
To pay for a home improvement project that totals $16,000, Genesis is choosing between taking out a simple interest bank loan at 8% for 3 years or paying with a credit card that compounds monthly at an annual rate of 15% for 7 years. Which plan would give Genesis the lowest monthly payment?
The monthly credit card payment would be $511.11, which is lower than the monthly payment on the bank loan.
The monthly payment on a bank loan would be $480, which is lower than the monthly credit card payment.
The monthly payment on a bank loan would be $551.11, which is lower than the monthly credit card payment.
The monthly credit card payment would be $540.78, which is lower than the monthly payment on the bank loan.
The monthly credit card payment would be $540.78, which is lower than the monthly payment on the bank loan.
What is simple interest?
Simple interest is based on the principal amount of a loan or the first deposit in a savings account. Simple interest doesn't compound, which means a creditor will only pay interest on the principal amount and a borrower would never have to pay more interest on the previously accumulated interest.
The simple interest earned can be calculated by using this formula
A = P(1 + rt)
Where,
A is the future value.
P is the principal value.
r is the interest rate.
t is the time.
Now Substituting the values into the formula, we have,
A = 16,000[1 + (0.08 × 3)]
A = 16,000[1 + 0.24]
A = 16,000× 1.24
Future value, A = $19,840.
Following that, we will compute the monthly payment over a 36-month period as follows:
Monthly payment = Future value/Time
Monthly payment = 19,840/36
Monthly payment = $551.11
Similarly, we will compute the credit card's compound interest:
A = 16000[1 + (0.15/12)]⁽¹² ˣ ⁷⁾
A = 16000[1 + 0.025]⁸⁴
A = 16000× 1.025⁸⁴
A = 9000 × 3.49258954
Future value, A = $45425.80
Following that, we will compute the monthly payment over an 84-month period as follows;
Monthly payment = Future value/Time
Monthly payment = 45425.80/84
Monthly payment = $540.78.
Hence, the monthly credit card payment would be $540.78, which is lower than the monthly payment on the bank loan.
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What type of variable is required to construct a confidence interval for a population proportion? Choose the correct answer below O A. Quantitative O B. Qualitative with any number of possible outcomes O C. Continuous D. Qualitative with 2 possible outcomes O E. Discrete O F. Qualitative with 3 or more possible outcomes
Qualitative with 2 possible outcomes of variable is required to construct a confidence interval for a population proportion.
The goal of qualitative research is to collect and analyze non-numerical (descriptive) data in order to comprehend people's attitudes, beliefs, and motivations in relation to their social reality. In-depth interviews, focus groups, or observations are frequently used in this kind of study to gather the information that is rich in context and detail.
To investigate complicated phenomena or to learn more about people's viewpoints and experiences on a certain subject, qualitative research is frequently used. It is especially helpful for academics who wish to comprehend the meaning that individuals attribute to their experiences or who want to identify the fundamental causes of people's conduct. Ethnography, grounded theory, discourse analysis, and interpretative phenomenological analysis are examples of qualitative approaches.
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Let ={x∈ℕ:2≤<19} and ={x∈ℕ: x is even}.
A: Find A ∩ B.
B: Find A∖B.
A: To find the intersection of the sets A and B, we need to find the elements that are common to both sets.
A = {x ∈ ℕ : 2 ≤ x < 19}
B = {x ∈ ℕ : x is even}
The intersection of the sets A and B is {x ∈ ℕ : 2 ≤ x < 19, x is even}
∩ = {4,6,8,10,12,14,16,18}
B: To find the difference of the sets A and B, we need to find the elements that are in set A but not in set B.
A = {x ∈ ℕ : 2 ≤ x < 19}
B = {x ∈ ℕ : x is even}
The difference of the sets A and B is {x ∈ ℕ : 2 ≤ x < 19, x is not even}
∖ = {3,5,7,9,11,13,15,17}
So the solution for A is ∩={4,6,8,10,12,14,16,18} and for B is ∖={3,5,7,9,11,13,15,17}
The pharmacist has a 4.3 L bottle of cough syrup. If she fills a bottle that is 1,900 ml, how many ml of cough syrup does the pharmacist have left? (1 L = 1,000 ml)
240 ml
2,400 ml
3,100 ml
6,200 ml
The total volume of cough syrup that the pharmacist will have left would be = 2,400ml. That is option B.
Who is a pharmacist?A pharmacist is an individual that is trained and licensed to dispense prescribed medication to individuals in the correct proportion.
The volume of the cough syrup the pharmacist has = 4.3L
But 1 L = 1000 ml
4.3 L = 4.3 × 1000 = 4300ml
The quantity of syrup transferred to a bottle = 1,900 ml
Therefore the amount remaining = 4300 - 1900 = 2,400ml.
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Sam ordered a $4.90 meal the tax rate was 7% .he paid with a $10 bill how much should he get back
Answer:
$4.76
Step-by-step explanation:
7% x 4.90 = 0.34
4.90 + 0.34 = 5.24
10 - 5.24 = 4.76
3. An arch in the shape of the upper half of an ellipse is used to support a bridge that is to span a river 20 meters wide. The center of the arch is 6 meters above the center of the river. Write an equation for the ellipse if the x-axis coincides with the water level and the y-axis passes through the center of the arch.
Answer:
the equation for the ellipse that describes the arch is:
(x^2/20^2) + (y^2/6^2) = 1
Step-by-step explanation:
An ellipse can be represented by the equation (x^2/a^2) + (y^2/b^2) = 1, where a and b are the lengths of the semi-major and semi-minor axes of the ellipse, respectively. In this case, the x-axis coincides with the water level and the y-axis passes through the center of the arch, so the center of the ellipse is at the point (0, 6).
For the arch in question, the semi-major axis is 20 meters (since the arch spans a river 20 meters wide) and the semi-minor axis is 6 meters (since the center of the arch is 6 meters above the center of the river).
So the equation for the ellipse that describes the arch is:
(x^2/20^2) + (y^2/6^2) = 1
using the factor theorem which of the following is a factor of the polynomial below x^3 + 7x^2 + 4x -12
A.
x-6
B.
x-3
C.
`X+4
D.
X-2
Using the Factor Theorem, it is found that none of these options represent a linear factor of f(x) = x³ + 7x² + 4x - 12.
How to verify if a term is a factor of the polynomial?The Factor Theorem states that if x - a is a factor of the polynomial y = f(x), then f(a) = 0.
The polynomial for this problem is defined as follows:
f(x) = x³ + 7x² + 4x - 12.
The numeric values for each of the options are given as follows:
f(6) = 6³ + 7(6)² + 4(6) - 12 = 480.f(3) = 3³ + 7(3)² + 4(3) - 12 = 90.f(-4) = (-4)³ + 7(-4)² + 4(-4) - 12 = 20.f(2) = 2³ + 7(2)² + 4(2) - 12 = 32.As none of the values of a have f(a) = 0, none of these terms are linear factors of the polynomial x³ + 7x² + 4x - 12.
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Given that a function, h, has a domain of -3 ≤ x ≤ 11 and a range of 1 ≤ h(x) ≤ 25 and that h(8) = 19 and h(-2) = 2, select the statement that could be true for h. A. h(-3) = -1 B. h(8) = 21 C. h(13) = 18 D. h(2) = 16
Answer:
The question is incomplete, but if I had to guess, it's an exercise in using the intermediate value theorem. The IVT says that for a continuous function , there is some value of within any interval , i.e. , in the domain of such that when , or when .We're told that and . The IVT then guarantees the existence of some value of between -2 and 8 such that .It looks like is one of several possible answer choices. We can't say anything about the value of because we only know how behaves between -2 and 8; the number 13 falls outside of this range. So this choice is not correct.
Step-by-step explanation:
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Which quadratic inequality does the graph below represent?
5
4
O yzx²-3
O y≤x²+3
O y≤x²-3
Ov> ²13
32
3-
2-
4
3-5-4-3-2-1 1
2 3
Therefore , the solution to the given problem of quadratic equation comes out to be real.
An explanation of a quadratic equation.The quadratic equation x ax2+bx+c=0 is a non - linear regression model in a single variable. a 0. According to the First Theorem of Algebra, this polynomial has at least single solution because it is of second order. There could be simple or complex solutions. A four-variable equation is referred to as a quadratic equation. This implies that it must have at least one squared word. A typical formula for resolving quadratic formula is "ax2 + bx + c = 0," where the numerical factors or constant a, b, and c stand in for the undefined variable "X."
Here,
The graph is shown.
For this graph, we must discover the inequality.
The parent role is:
f(x) = x²
When we move the parent function back three units, we get,
f(x) = x² - 3
It is evident from this that option B is incorrect.
Check the additional disparities we obtain now.
Using the 1 and 3 choices we receive, choose any location from the shaded area.
x=-2 and y=0 are entered one by one into the inequality to yield,
FIRST CHOICE
y >= x²-3
0 >= (-2)²-3
0 >= 4-3
0>= 1
That is untrue.
3rd option
y<= x² - 3
0<= (-2)² -3
0<=1
This is real.
Choice 3 is the right one, thus.
Therefore , the solution to the given problem of quadratic equation comes out to be real.
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Brooklyn is trying to pick out an outfit for the first day of school. She can
choose from 6 pairs of pants, 8 t-shirts, 3 sweaters or hoodies, and 5 pairs of
shoes. How many different outfits does Brooklyn have to choose from?
Therefore , the solution to the given problem of combination comes out to be thus, we might deduce that Brooklyn has 720 options from which to choose.
What is the Combination?Combinations are mathematical procedures that count the number of possible configurations from a set of things, where the ordering of the selection of the elements is not important. You can select any set of items in any arrangement. Combinations and permutations are frequently wrong.
Here,
For the predicament,
six pants pairs
8 t-shirts
5 pairs equal 1 pair.
hoodies= 3
The formula to determine how many ways there are in a combination is = C. (n,r)
The number of possible outfit combinations is equal to C(n,r)* C(n,r)* C(n,r)* C (n,r)
=> C(6,1)*C(8,1)* C(5,1)* C(3,1) (3,1)
=> 6*8*5*3
=> 720
Therefore , the solution to the given problem of combination comes out to be thus, we might deduce that Brooklyn has 720 options from which to choose.
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Answer:
720
Step-by-step explanation below:
Brainly pls
A cone with diameter 20 ft and a height of 20
ft.
Answer:
Volume = 2094.40 ft³ (2 d.p.)
Surface area = 1016.64 ft² (2 d.p.)
Step-by-step explanation:
If the diameter of a cone is 20 ft, then its radius is 10 ft since d = 2r.
[tex]\boxed{\begin{minipage}{4 cm}\underline{Volume of a cone}\\\\$V=\dfrac{1}{3} \pi r^2 h$\\\\where:\\ \phantom{ww}$\bullet$ $r$ is the radius. \\ \phantom{ww}$\bullet$ $h$ is the height.\\\end{minipage}}[/tex]
Given:
r = 10h = 20Substitute the given values of r and h into the formula for the volume of a cone and solve for V:
[tex]\implies V=\dfrac{1}{3} \pi \cdot 10^2 \cdot 20[/tex]
[tex]\implies V=\dfrac{1}{3} \pi \cdot 100 \cdot 20[/tex]
[tex]\implies V=\dfrac{1}{3} \pi \cdot 2000[/tex]
[tex]\implies V=\dfrac{2000}{3} \pi[/tex]
[tex]\implies V=2094.40\;\rm ft^3\;\;(2\;d.p.)[/tex]
[tex]\boxed{\begin{minipage}{4 cm}\underline{Surface Area of a cone}\\\\$SA=\pi r \left(r+\sqrt{h^2+r^2}\right)$\\\\where:\\ \phantom{ww}$\bullet$ $r$ is the radius. \\ \phantom{ww}$\bullet$ $h$ is the height.\\\end{minipage}}[/tex]
Given:
r = 10h = 20Substitute the given values of r and h into the formula for the surface area of a cone and solve for SA:
[tex]\implies SA=10\pi \left(10+\sqrt{20^2+10^2}\right)[/tex]
[tex]\implies SA=10\pi \left(10+\sqrt{400+100}\right)[/tex]
[tex]\implies SA=10\pi \left(10+\sqrt{500}\right)[/tex]
[tex]\implies SA=10\pi \left(10+\sqrt{100\cdot 5}\right)[/tex]
[tex]\implies SA=10\pi \left(10+10\sqrt{5}\right)[/tex]
[tex]\implies SA=100\pi +100\sqrt{5}\: \pi[/tex]
[tex]\implies SA=1016.64\; \rm ft^2\;\;(2\;d.p.)[/tex]
The real numbers greater than or equal to 5 or less than or equal to -5
Answer:
x <= -5 or x >= 5.
Step-by-step explanation:
The boundary values (-5) and (5) contain closed circles to show that these values are included in the solution sets for the given inequalities.
Had our given compound inequality been:
x < -5 or x > 5
Then the boundary values (-5) and (5) would have contained open circles to show that these values are not included in the solution sets for these inequalities.
ignore the text just answer the question please ty <3
Answer: 53.6 degrees Farenheit
Step-by-step explanation:
The question says that the temperature in Washington was 12 degrees Celsius.
To convert that into Fahrenheit, plug in the value 12 in the equation given.
F = 1.8*12+32
= 53.6
Solve the following equation for x 5x+3y=15
Answer:
x=3-3/5y
Step-by-step explanation:
5x+3y=15
5x=15-3y
x=(15-3y)/5
x=3-3/5y
Answer:
x= 3 y=5
Step-by-step explanation:
solving for x
5x + 3y = 15 Zero out the substitute
5x +( 3y * 0) = 15
5x + 0 = 15 Adding by zero can be ommited
5x = 15 Divide both side by 5
x = 3
if solving for y
5x + 3y = 15
(5x*0) + 3y = 15 zero out the substitute
0 + 3y = 15
3y = 15 devide by the number in front of x
y= 5
NEED HELPS ASAP PLS AND THX PIS IS ATTACHED
The reasons are When two lines intersect, the angles formed opposite to each other are termed as vertical angles
what is right angle congruence theorem?Two right-angled triangles are said to be congruent to each other if the hypotenuse and one side of the right triangle are equal to the hypotenuse and the corresponding side of the other right-angled triangle.In a triangle, if square of one side is equal to the sum of the squares of the other two sides, then the angle opposite the first side is a right angle.Regarding right triangles, there are four theorems that prove congruence. They are the leg-leg theorem, the hypotenuse-leg theorem, the hypotenuse-angle theorem, and the leg-angle theorem Two right triangles can have all the same angles and not be congruent, merely scaled larger or smaller. If all the side lengths are multiplied by the same number, the angles will remain unchanged, but the triangles will not be congruent.To learn more about right angle congruence theorem refers to:
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Write an equation that has a solution of 4.
Use the variable n and multiplication. Example: ( 5 x n = 40)
On solving the provided question, we can say that equation that has a solution of 4 is -8+16=0
What is equation?An equation is a mathematical formula that connects two assertions using the equal sign (=) to denote equivalence. In algebra, an equation is a mathematical statement that establishes the equivalence of two mathematical expressions. For instance, an equal sign separates the components 3x + 5 and 14 in the equation 3x + 5 = 14. A mathematical formula is used to explain the connection between two sentences on either side of a letter. Frequently, there is just one variable, which is also the symbol. for example, 2x - 4 = 2.
If we solve -8+16=0, we get
-4-4n+16=0
(-4)-4(-4)=0
(-4)(-4)=0
which give -4=0
=4
Hence, the equation -8+16=0 has solution =4.
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Which simplified ratio correctly compares 12 yards to 20 feet?
Responses
3:5
3 colon 5
9:5
9 colon 5
5:9
5 colon 9
5:3
Answer:3:5
Step-by-step explanation:
12/4 is 3 and 20/4 is 5
so 3:5
Answer:9 and 5
Step-by-step explanation:k12
A foreigner buys some typical Nepali goods in Kathmandu After allowing 10% discount and then adding 15% VAT, be pays Rs.4140. Find marked price of goods. How much does he get while leaving Nepal?
Market price of goods is 3942.86 Rs.
What is market price?The price at which a goods, assets, instruments or raw materials are bought and sold at a wholesale market.
What is the market price of the goods?
let, market price of Nepali goods = X
after allowing discount and vat the price of goods = 4140 Rs
discount = 10 %
the amount of discount = X 10/ 100
Vat added = 15%
the amount of vat added = X 15/ 100
Now, discount is subtracted from market price and vat is added to it.
The equation will be
X - X10/100 + X15/100 = 4140 Rs
X = 3942.86 Rs
market price of goods = 3942.86 Rs
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A drummer and a guitarist each wrote songs for their band. The guitarist wrote 8 fewer than twice the number of songs that the drummer wrote. They write a total of 46 songs.
How many songs did the guitarist write? How many songs the drummer write?
The number of songs written by the guitarist and by the drummer is given as follows:
Guitarist: 28.Drummer: 18.How to obtain the number of songs written by each?The number of songs written by each is obtained using a system of equations, for which the variables are given as follows:
Variable x: number of songs written by the guitarist.Variable y: number of songs written by the drummer.The guitarist wrote 8 fewer than twice the number of songs that the drummer wrote, hence:
x = 2y - 8.
They wrote a total of 46 songs, hence:
x + y = 46.
Replacing the first equation into the second, the number of songs written by the drummer is of:
2y - 8 + y = 46
3y = 54
y = 18.
Hence the number of songs written by the guitarist is given as follows:
x = 46 - 18
x = 28.
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In the currency pair USD/CAN, USD is the
O A. pegged currency
OB. quote currency
OC. reserve currency
OD. base currency
Answer: D. base currency
Step-by-step explanation: In the foreign exchange market, currencies are traded in pairs. A currency pair consists of two currencies, with one currency being quoted against the other.
In a currency pair, the base currency is the first currency listed. It is the currency against which the exchange rate is quoted. In the case of USD/CAN, USD is the base currency. The base currency serves as a reference point for calculating exchange rates. It helps determine the value of the quote currency which is the second currency listed in a currency pair. It represents the value of the quote currency needed to purchase one unit of the base currency.
Furthermore, changes in the exchange rate reflect the strength or weakness of the base currency relative to the quote currency.
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NEED HELP PLS ASAP AND THX PIC IS ATTACHED
Miguel Rodriguez borrowed $400 from his brother Julio to pay for books and tuition. He agreed to pay Julio in 6 months with simple annual interest at 6.4%.
a) How much will the interest amount to?
b) What amount must Miguel pay Julio at the end of 6 months?
A. The interest amount will be $12.8.
B. He must pay Annual amount of $412.8 at the end of 6 months.
What is interest?Interest is the idea that one party should be compensated for taking a risk and giving up the chance to use funds, while another party should be punished for using someone else's money.
The person who temporarily part with their money is entitled to compensation, and the person who temporarily uses those funds is frequently required to make this payment.
The simple interest is calculated as :
S.I = P×T×R
where,
S.I is the simple interest
P = Principal
T = Time period in years
R = Annual interest rate
The above problem,
Amount borrowed which would be the principal (P) = $400
Time period = 6 months = 1/2 year
Annual interest rate = 6.8% = 6.8/100 = 0.068
Substitute the details in formula
Simple Interest = 400×1/2×0.068
= 200 ×0.068
= 12.8
Amount to be paid = 400 + 12.8
= 412.8
Thus, the interest will be $12.8 and he must pay $412.8 at the end of 6 months.
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Michelle is facing west and rebeca is facing northeast. They both make half a turn to their left. What do they need so they both face north.
A. Michelle makes a quarter turn to her left and Rebecca makes three eight turn to her right.
B. Michelle makes a quarter turn to her right and rebecca makes three eight turn to her right.
C. Michelle makes a quarter turn to her her left and rebecca makes a three eight turn to her left.
D. Michelle makes a quarter turn to her right and Rebecca makes a three eight turn to her left.
The correct answer is Michelle makes a quarter turn to her right and Rebecca makes a three eight turn to her left.
What is speed?Speed is the rate of change of position. It is the physical quantity that measures how quickly an object moves from one place to another. It is measured in units such as meters per second, kilometers per hour, or miles per hour. Speed is related to velocity, which is the measurement of how quickly an object moves in a specific direction. Speed is an important concept in physics and is necessary for understanding how the universe works.
Michelle makes a quarter turn to her right and Rebecca makes a three eight turn to her left. By making these turns, they will both end up facing north. A quarter turn to the right is the same as a three eight turn to the left. This is because a full turn is 360 degrees, so a quarter turn is 90 degrees and a three eight turn is also 90 degrees.
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Do you guy know what is 4/5 - 3/8 for my little cosin
Answer:
17/40
Step-by-step explanation:
4/5-3/8
32/40-15/40
17/40
exercise 1.1.14 in each case either show that the statement is true, or give an example showing it is false. (a) If a linear system has n variables and m equations, then the augmented matrix has n rows. quations • (b) A consistent linear system must have infinitely many solutions. . (c) If a row operation is done to a consistent linear system, the resulting system must be consistent. (d) If a series of row operations on a linear system results in an inconsistent system, the original system is inconsistent.
The statements are:
(a) If a linear system has n variables and m equations, then the augmented matrix has n rows equations = False
(b) A consistent linear system must have infinitely many solutions. = False
(c) If a row operation is done to a consistent linear system, the resulting system must be consistent = True
(d) If a series of row operations on a linear system results in an inconsistent system, the original system is inconsistent = True
(A) An equation with n variables. Order of the matrix is m*m=. enhanced matrix Instead of (m+1) rows, this matrix has m rows. Thus, the claim is false.
(b) Either a singular or infinite linear system that is consistent. This technology is reliable and offers a distinctive solution. Therefore, statement (c) is false. If a consistent linear system is subjected to a row operation, the new system must also be consistent. We are aware that the matrix's rank remains unchanged after conducting a row action. So, it is accurate.
(d) The initial system is inconsistent if a succession of row operations on a linear system yields an inconsistent system. We are aware that the resulting system is identical to the original system of linear equations after conducting a sequence of row operations. So, it is true.
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A group of students were asked which club they planned to join.
Club Percent of Students
Garden Club 0.1
Robotics Club 0.2
Technology Club 0.5
Zoology Club 0.2
Compare the probabilities of a randomly selected student joining a club and interpret the likelihood. Choose the statement that is true.
The student will be more unlikely to join the Robotics Club than the Garden Club because P(Robotics) < P(Garden).
The student will be equally likely to join the Zoology Club or Robotics Club because P(Robotics) = P(Zoology).
The student will be more likely to join the Zoology Club than the Robotics Club because P(Zoology) > P(Robotics).
The student will be more likely to join the Garden Club than the Robotics Club because P(Garden) > P(Robotics).
The statement that is true about the probabilities is;
B: The student will be equally likely to join the Zoology Club or Robotics Club because P(Robotics) = P(Zoology).
How to interpret the probabilities?We are given the various students club and their probabilities of being randomly selected;
Garden club = 0.1
Robotics club = 0.2
Technology club = 0.5
Zoology Club = 0.2
Now, it is clear that Technology cub has the highest probability of being selected at 0.5 while Garden club has the least probability of being selected.
However we see that Robotics club and zoology club have the same probability and as such looking at the options, only option B is true.
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The function fis defined for f(x)= cos x+sinx for 0≤x≤ 2. What is the x-coordinate of the point of inflection where
the graph of fchanges from concave down to concave up?
The maximum and minimum x-coordinates at the point of inflection are, respectively,[tex]$\left(\frac{\pi}{4}+2 \pi n, \sqrt{2}\right)$[/tex] and [tex]$\left(\frac{5 \pi}{4}+2 \pi n,-\sqrt{2}\right)$[/tex], and the function f is defined as f(x)=cos x+sin x for 0≤x≤ 2.
What is meant by x-coordinate of the point of inflection ?[tex]$\frac{d}{d x}(\cos (x)+\sin (x))$[/tex]
Continuity of [tex]$\cos (x)+\sin (x): \quad 2 \pi$[/tex]
Domain of [tex]$\cos (x)+\sin (x):\left[\begin{array}{cc}\text { Solution: } & -\infty < x < \infty \\ \text { Interval Notation: } & (-\infty, \infty)\end{array}\right]$[/tex]
Range of [tex]$\cos (x)+\sin (x):\left[\begin{array}{cc}\text { Solution: } & -\sqrt{2} \leq f(x) \leq \sqrt{2} \\ \text { Interval Notation: } & {[-\sqrt{2}, \sqrt{2}]}\end{array}\right]$[/tex]
Axis points of interception [tex]$\cos (x)+\sin (x)$[/tex] [tex]: X Intercepts: $\left(\frac{3 \pi}{4}+2 \pi n, 0\right),\left(\frac{7 \pi}{4}+2 \pi n, 0\right)$,[/tex]
The Y intercept: (0,1)
the asymmetrical [tex]$\cos (x)+\sin (x)$[/tex] : None
Excessive Points of [tex]$\cos (x)+\sin (x): \quad$[/tex] Maximum [tex]$\left(\frac{\pi}{4}+2 \pi n, \sqrt{2}\right)$[/tex] , Minimum [tex]$\left(\frac{5 \pi}{4}+2 \pi n,-\sqrt{2}\right)$[/tex]
We put the second derivative of the function equal to zero to get the x-coordinate of the point of inflection. Re-inserting the x-coordinate into the initial function yields the point's y-coordinate.
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Given
w (x) = x² + 4x − 3
and
z (x) = x + 5
what is the value of
w (z (7))
Answer:
[tex]w(z(7))=189[/tex]
Step-by-step explanation:
[tex]z(7)=7+5=12 \\ \\ w(z(7))=w(12)=12^2+4(12)-3=189[/tex]