a. he will travel 20 meters, b. he will travel 2.5 meters, c. 2.5 meters per second, and d. he will travel 6 meters
a. If Bil runs for 8 seconds at Gregory's constant speed, he will travel 20 meters (10 meters per 4 seconds = 2.5 meters per second, 2.5 meters per second x 8 seconds = 20 meters).
b. If Gregory runs for 1 second at his constant speed, he will travel 2.5 meters (10 meters per 4 seconds = 2.5 meters per second, 2.5 meters per second x 1 second = 2.5 meters).
c. The constant speed that Gregory runs at is 2.5 meters per second.
d. If Gregory runs for 2.4 seconds at his constant speed, he will travel 6 meters (2.5 meters per second x 2.4 seconds = 6 meters).
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An auditorium with 30 rows of seats has 10 seats in the first row. Each successive row has one more seat than the previous row. If students taking an exam are permitted to sit in any row, but not next to another student in that row, what is the maximum number of students that can be seated for an exam
Answer:
Step-by-step explanation:
380 rows in total
bcs
use sense
ASAP
must be done today
The box-and-whisker plot for the data can be seen in the attachment.
The data given to us is:
50, 51, 54, 55, 57, 61, 62, 63, 65, 66, 67, 68, 71, 71, 76, 76, 77.
As the data is already ordered from least to greatest, we can apply the formulas.
The sample size, n = 17.
Start point = 50.
First quartile, Q1 = (n + 1)/4 th observation = (17 + 1)/4 th observation = 18/4 th observation = 4.5 th observation = average of the 4th and the 5th observation = (55 + 57)/2 = 112/2 = 56.
Median, Q2 = (n + 1)/2 th observation = (17 + 1)/2 th observation = 18/2 th observation = 9th observation = 65.
Third quartile, Q3 = 3(n + 1)/4 th observation = 3(17 + 1)/4 th observation = 3*18/4 th observation = 54/4 th observation = 13.5 th observation = average of the 13th and the 14th observation = (71 + 71)/2 = 142/2 = 71.
End point = 77.
Thus, the box-and-whisker plot should be designed as follows:
The start of the first whisker is from 50, representing the start point.
The start of the box is from 56, representing the first quartile.
The line inside the box is at 65, representing the median.
The end of the box is at 71, representing the third quartile.
The end of the whisker is at 77, representing the endpoint.
The box-and-whisker plot can be seen in the attachment.
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Can someone help me with these problems please
Using numerical integration to estimate the area of the semicircle (r=4 )and c(4,0) with n=4
The area of the semicircle = 8π
A semicircle is formed when the panel passing through the center touches both ends of the circle. Therefore, if you connect two semicircles, you get a circle
If you cut them in half or divide the circumference of the circle by 2, you will get a semi-circle. Area of semicircle The area of the semicircle is half the area of the circle. Because the area of the circle is πr2. Therefore, the area of the semicircle is 1/2 (πr2). Where r is the radius. The value of π is 3.14 or 22/7.
Semi-circular area = 1/2 (πr2)
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Graph the image of this triangle after a dilation with a scale factor of 2 centered at the origin. Use the polygon tool to graph the triangle.
The triangle is illustrated below.
How to explain the triangle?The first thing you should find are the new vertices:
(x, y) ---> (2x, 2y) ---> (x', y')
(0, 0) ---> (2 (0), 2 (0)) ---> (0, 0)
(-4, 4) ---> (2 (-4), 2 (4)) ---> (-8, 8)
(-4, -2) ---> (2 (-4), 2 (-2)) ---> (-8, -4)
Then, you must join the ordered pairs and graph the new triangle.
See the attached graph.
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There are 20 teachers and 705 students in cory's school. what is the ratio of teachers and students
We know that ratios can be shown with both fractions and colons.
20:705
or
[tex]\frac{20}{705}[/tex]
It also looks like we can simplify this by dividing by 5.
20/5 = 4
705/5 = 141.
This means that for every 4 teachers, there are 141 students.
The ratio for teachers to students is:
4 : 141
the vertices of abc are a (-6,-7) b(-3,-10) and c(-5,2) find the vertices of abc given the transition rule (x,y)-->(x,y-3)
The vertices of abc given the transition rule (x,y)-->(x,y-3) are (-6, -10), (-3, -13) and (-5, -1)
How to determine the new vertices?The vertices are given as:
a (-6,-7)
b(-3,-10)
c(-5,2)
The transition rule is given as
(x,y)-->(x,y-3)
So, we have
a' = (-6, -7 - 3)
a' = (-6, -10)
b' = (-3, -10 - 3)
b' = (-3, -13)
c' = (-5, 2 - 3)
c' = (-5, -1)
Hence, the vertices of abc given the transition rule (x,y)-->(x,y-3) are (-6, -10), (-3, -13) and (-5, -1)
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PLEASE HELP!!!! A bag contains 1 white (W), 3 blue (B1, B2, B3), and 2 red (R1, R2) marbles. (4 points)
a. Use a tree diagram to list all the possible outcomes for tossing a coin and then drawing a marble from the bag.
b. Are these independent or dependent events?
c. Find the probability of tossing a head and drawing a red marble. Explain your reasoning.
d. Find the probability of drawing two blue marbles if the first marble is not replaced. Explain your reasoning.
The events are independent events and probability of tossing a head and drawing a red marble is 1/7
a) The answer is present in the image attached below
b) Tossing of a coin and drawing of a marble are independent events as these two events do not interfere in the probability of each others events.
c) The probability of tossing a head and drawing a red marble is = [tex]\frac{1}{2}.\frac{2}{7}[/tex]=1/7 as we can see from the tree diagram that probability of tossing a coin and getting head is 1/2 and probability of drawing a red marble is 1/7. As they are independent events, their probability can be multiplied. Hence the probability of tossing a head and drawing a red marble is 1/7.
d) The probability of drawing two blue marbles if the first marble is not replaced and one at a time is 1/7. Probability of drawing first blue marble from the lot is 3/7 as favorable outcomes are 3 and total outcomes are 7. As the ball is not replaced the outcomes are changed. Now the number of blue balls are 2 and total number of balls are 6. So now the probability becomes 2/6. Hence the total probability becomes = 1/7
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-6-5
(-5-4)
(-2,2)
2-
4
--2-1₁
4-
2
4 9
(0, -3)
X
What is the equation of the line that is parallel to the
given line and passes through the point (-2, 2)?
Oy=x+4
Oy = x + ¹/2
Oy = -5x + 4
Oy=-5x + ¹2
The equation of the line that is parallel to the given line and passes through the point (-2,2) is:
[tex]y = \frac{x}{5} + \frac{12}{5}[/tex]
What is a linear function?A linear function is modeled by:
y = mx + b
In which:
m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.When two lines are parallel, they have the same slope. In this problem, the given line passes through (-5,-4) and (0,-3), hence the slope is:
m = (-3 - (-4))/(0 - (-5)) = 1/5.
Hence the equation is:
[tex]y = \frac{x}{5} + b[/tex]
When x = -2, y = 2, then:
[tex]y = \frac{x}{5} + b[/tex]
[tex]2 = \frac{-2}{5} + b[/tex]
[tex]b = \frac{12}{5}[/tex]
Hence:
[tex]y = \frac{x}{5} + \frac{12}{5}[/tex]
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Which represents the solution set to the inequality 5.1(3 2.2x) > –14.25 – 6(1.7x 4)? x < –2.5 x > 2.5 (–2.5, [infinity]) (–[infinity], 2.5)
The solution set to the inequality 5.1(3 + 2.2x) > –14.25 – 6(1.7x + 4) gives x > -2.5
What is an equation?An equation is an expression that shows the relationship between two numbers and variables.
An independent variable is a variable that does not depend on any other variable for its value whereas a dependent variable is a variable that depend on any other variable for its value.
Inequality shows the non equal comparison of two or more numbers and variables.
Given the inequality:
5.1(3 + 2.2x) > –14.25 – 6(1.7x + 4)
Simplifying:
15.3 + 11.22x > –14.25 – 10.2x - 24
21.42x > -53.55
x > -2.5
The solution set to the inequality 5.1(3 + 2.2x) > –14.25 – 6(1.7x + 4) gives x > -2.5
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Name a postulate or theorem that can be used to prove that the two triangles are similar. Then, write a similarity statement.
Postulate: SAS
Similarity statement: [tex]\triangle CAB \sim \triangle EDF[/tex]
Help help help help help just need answer
Answer:
25 miles
Step-by-step explanation:
2 inches represents 10 miles ( divide both parts by 2 )
1 inch represents 5 miles , then
5 inches represents 5 × 5 = 25 miles
Vector u has initial points at (21,12) and it’s terminal point at (19,-8). Vector v has a direction opposite that of u. Who’s magnitude is five times the magnitude of v. Which is the correct form of vector v expressed as a linear combination of the unit vectors i and j?
The correct form of vector v expressed as a linear combination of the unit vectors i and j is [tex]\vec v = 10\,\hat{i} + 100\,\hat{j}[/tex].
What is the value of a vector with respect to another vector?
First, we need to determine the value of the vector u by subtracting two vectors whose initial points are at the origin:
[tex]\vec u = (19\,\hat{i} - 8\,\hat{j}) - (21\,\hat{i} + 12\,\hat{j})[/tex]
[tex]\vec u = - 2\,\hat{i} - 20\,\hat{j}[/tex] (1)
According to the statement, vector v is antiparallel to vector u and its magnitude is five times as the magnitude of vector v, which means that (1) must be multiplied by two scalars:
[tex]\vec v = - 1 \,\cdot \, 5\cdot \vec u[/tex] (2)
Please notice that antiparallelism is represented by the scalar - 1, whereas the dilation is represented by the scalar 5.
[tex]\vec v = 10\,\hat{i} + 100\,\hat{j}[/tex]
The correct form of vector v expressed as a linear combination of the unit vectors i and j is [tex]\vec v = 10\,\hat{i} + 100\,\hat{j}[/tex].
Remark
The statement presents typing mistakes, correct form is shown below:
Vector u has initial points at (21, 12) and its terminal point at (19, - 8). Vector v has a direction opposite that of u, whose magnitud is five times the magnitud of v. Which is the correct form of vector v expressed as a linear combination of the unit vectors i and j?
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can someone please explain to me how to solve this?
Which set of ordered pairs represents y as a function of x?
A (0, 0.5), (2, 1.5), (−5.5, 5), (−5.5, −6)
B (5, −7), (3, −7), (−9.2, −7), (9.2, −7)
C (9.3, −1), (7.3, −2), (7.3, 2), (9.3, 1)
D (8.1, 9), (9.1, 10), (10.1, 9), (9.1, 8)
Answer:
B.
Step-by-step explanation:
A C and D are not functions as they are one - to - many whereas B is many-to-one.
1. Write the next 3 terms in
patterns.
these
121,11,1,1/11
Answer:
Your simply dividing by 11
Step-by-step explanation:
0.008...
0.0007...
0.00006...
All you have to do is turn these numbers into fractions!
Answer:
1/121, 1/1331, 14641
Step-by-step explanation:
121, 11 ,1 , 1/11
We need to find the next three terms in the pattern
We are taking each term and dividing by 11
121/11 =11
11/11 =1
1/11 = 1/11
1/11 divided by 11
1/(11*11) = 1/121
1/121 * 1/11 = 1/1331
1/1331 * 1/11 = 14641
HURRY PLS 15 MINS LEFT!!
Answer:
y is less than or equal to 2/3x + 1/5
Step-by-step explanation:
In a two-tailed hypothesis test comparing the means of independent samples, the test statistic is 3.06 and the critical values are /-2.086. True or false: the null hypothesis is not rejected.
In a two-tailed hypothesis test the null hypothesis is rejected.
According to the statement
The test statistic is 3.06 and the critical values are /-2.086.
If we find the value of t by using the formula the then it comes with Negative sign and it lies under the critical region.
That's why In a two-tailed hypothesis test the null hypothesis is rejected.
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What criteria might CBR researchers use to select and specify which units will be sampled as well as the sampling frame and methods to be used
The criteria which CBR researchers might use to select and specify which units will be sampled as well as the sampling frame and methods to be used is the population.
What is Population?This is defined as the total number of organisms found in a particular place at any given point in time and varies based on the number of variables present. In some cases, head counts are done to ascertain the exact value of individuals present.
The probability sampling method is ideal for a large population and involves random selection of the organisms so as to find out the statistical features of the group being used such as the range, mean etc. This tool is very important in the area of giving estimates for ascertain type of activity or job.
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The difference in measure of two complemenatary angles is 12 find the measure of the angles
The measure of the angle is 51 degrees.
If the sum of two angles is ninety levels, then we say that they may be complementary. thus, the supplement of an attitude is received by means of subtracting it from 90. as an example, the supplement of 40° is ninety° - forty° = 50°.
If two attitudes are complementary, the sum in their measure is ninety tiers. So, the measures of the 2 complementary angles are 51 degrees and 39 degrees.
While the sum of angles is equal to ninety ranges, they are known as complementary angles. For example, 30 stages and 60 stages are complementary angles.
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Find the indicated term of the geometric sequence.
5th term of 1,
1 /4,1/16,…
Answer:
[tex]\frac{1}{256}[/tex]
Step-by-step explanation:
So generally a geometric sequence can be defined as: [tex]a_n=a_1(r)^{n-1}[/tex] which is the explicit form. The r, is what each previous term is being multiplied by to get the next value which is evident in the recursive form: [tex]a_n = r(a_{n-1})\\[/tex]. Knowing this we can take two values which are "next" to each other to find what r is. In this case I'll just is 1 and 1/4, given these two values we know that: [tex]\frac{1}{4} = 1 * r[/tex], 1*r is just r... so what each term is being multiplied by is 1/4. So let's plug the values into the explicit formula: [tex]a_n=(\frac{1}{4})^{n-1}[/tex] (I didn't put an a_1 value in front, since it's just 1... so it's a bit redundant). Anyways using this formula we simply plug in 5 as n into the equation to find the 5th term: [tex]a_5 = (\frac{1}{4})^{5-1} = (\frac{1}{4})^4 = \frac{1^4}{4^4} = \frac{1}{256}[/tex]
Which equations are true for x = –2 and x = 2? Select two options x2 – 4 = 0 x2 = –4 3x2 + 12 = 0 4x2 = 16 2(x – 2)2 = 0
The equations which are true for the values of x given are; x²-4 =0 and 4x²= 16.
Which equations are true for the values of x?The values of x given according to the task content are; x = –2 and x = 2.
By considering equation; x²-4 =0
x² = 4
x = ±2
Also, by considering 4x²= 16;
x² = 16/4 = 4
x = ±4.
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in a survey, 250 adults and children were asked whether they know how to swim. the surgery data are shown in the relative frequency tqable
Answer: D
Step-by-step explanation:
Rewrite the function by completing the square. x2 + 4x = 0 (x + )2 =
When the completing the square is applied, the rewritten function is (x + 2)^2 = 4
How to complete the square?The equation is given as:
x^2 + 4x = 0
The above equation is a quadratic equation and the coefficient of x in the above equation is 4.
So, we have:
k = 4
Divide the variable k by 2
k/2 = 4/2
k/2 = 2
Square the above result
(k/2)^2 = 4
Next, we add 4 to both sides of x^2 + 4x = 0
x^2 + 4x + 4 = 4
Expand the equation by expressing 4x as 2x + 2x
This gives
x^2 + 2x + 2x + 4 = 4
Factorize the above equation
x(x + 2) + 2(x + 2) = 4
Factor out x + 2 from the above equation
(x + 2)(x + 2) = 4
Rewrite the equation as a perfect square of (x + 2)
(x + 2)^2 = 4
Hence, the rewritten function after completing the square is (x + 2)^2 = 4
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9x/4y=1 and y= 18, what is the value of x
Answer:
x = 8
Step-by-step explanation:
[tex]\frac{9x}{4y}=1[/tex]
[tex]\frac{9x}{4*18} =1[/tex]
9x = 72
x = 8
Help needed
65. Solve for in the logarithmic equation 3 log x = 2.
O * = 1,000,000
O * = 150
O * = 56.423
O * = 4.642
When multiplying or dividing measured quantities, what determines the number of significant figures in the result?.
The quantity with the fewest number of significant figures.
The least number of significant figures is used to calculate the product's or quotient's number of significant figures when multiplying or dividing measurable numbers. While 5.25 has three major figures, 3.5 only has two.What is significant figures?
Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value. We start counting significant figures at the first non-zero digit. Calculate the number of significant figures for an assortment of numbers.When multiplying two measured values the number of significant figures should be equal to the?
For multiplication or division, the rule is to count the number of significant figures in each number being multiplied or divided and then limit the significant figures in the answer to the lowest count. An example is as follows: The final answer, limited to four significant figures, is 4,094.Learn more about significant figures
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Sabrina Uses a hose to fill a 20-gallon fish tank. The hose
puts out water at a rate of 3 gallons per minute. To start
with, the tank has 5 gallons of water in it.
A. How much water is in the tank after 2 minutes
of filling the tank with the hose?
B. Write an equation that represents the volume
Causes of variation that can be identified and eliminated are called what?
The causes of variation that can be identified and eliminated are called; Assignable Causes.
What are the causes of Variation?There are two primary causes of variation in the quality of a product or process. These two primary causes are called;
Common causes.Assignable causes.Now, Common causes of variation are defined as random causes that we cannot identify. However, Assignable causes of variation are those that can be identified and eliminated.
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You buy a car for $25,000. It depreciates at the rate of 23% per year.
a. Write an exponential equation to model the value of the car.
What will the car be worth in 10 years?
round to nearest cent
The worth of the car in 10 years is $1,831.67 using an exponential equation approach.
What is an exponential equation?
An exponential equation is the one with exponents such X^3(the 3 is the exponent)
The exponential equation required here is the one where the future value would be lower than current value because the car reduces in value year-in-year-out.
FV=PV*(1-r)^N
FV=future worth of the car
PV=today's value=$25,000
r=depreciation rate=-23%
N=number of years=10
The fact that r is negative means the car is depreciating not appreciating.
FV=$25,000*(1-23%)^10
FV=$1,831.67
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A linear function on a coordinate plane. A line passing through (1, 4), (minus 2, minus 2), intersects the y- axis at 2 units and intersects the x-axis at (minus 1, 0) to form shaded portions on the left side of the line. Which of the following inequalities is graphed on the coordinate plane?
The inequality passing through (1, 4), (-2, -2), intersecting the y-axis at 2 units and intersects the x-axis at (-1, 0) to form shaded portions on the left side is y > 2x+2
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
An inequality shows the non equal comparison of two or more numbers and variables.
The inequality passing through (1, 4), (-2, -2), intersecting the y-axis at 2 units and intersects the x-axis at (-1, 0) to form shaded portions on the left side is y > 2x+2
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