I really don’t get how to do this. It’s really confusing me! I really need help, if anyone can answer this it’ll be much appreciated
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i suck at fractions..............................
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If f(x) = x^2 + 3x – 2. find f(-2) .
f(-2) = -4
f(-2) = 4
f(-2) = -2
f(-2) = 2
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Answer:
f(-2) = - 4
Step-by-step explanation:
f(x) = x² + 3x - 2
f(-2) = ( -2)² + 3 *(-2) - 2
= 4 - 6 - 2
= 4- 8
= - 4
Hope it will help :)
2. Juan Pablo makes an hourly salary of $15 and time-and-a-half for any hours over 40. Last week he worked 45 hours. Explain how you would calculate his weekly gross pay, his Social Security Tax (6.2%), and his Medicare tax (145N). You don't need to actually calculate the values, just explain what mathematical processes you would use and why
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Answer:
Gross = $712.5
Social security = $44.175
Medicare = $10.33125
Step-by-step explanation:
Given that :
Hourly pay = $15
Hours over 40 = 1.5 * $15 = $22.5
Total hours worked last week = 45
Total pay :
(40 * $15) + (45 - 5)*$22.5
$600 + $112.5
= $712.5
Hence, weekly gross pay = $712.5
Social security tax percent =(6.2%)
0.062 * gross = 0.062 * $712.5 = $44.175
Medicare tax percent = (1.45%)
0.0145 * $712.5 = $10.33125
When adding two mixed numbers, you should add the ignore the fractions and add the mixed numbers first.
True
False
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Answer:
FALSE
.....
I think?
Jonah has been saving for a video game. Last year it cost $28. This year it costs $36. Determine the percent of change.
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Answer:
Where: 28 is the old value in 36 is the new value in this case we have a positive change increase of 28.571142857
I need help plz and thank you
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Answer:
x is 75 degree and y is 140 degree
Can someone help me. The picture is attached. Thank you :) I will give brainliest
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Answer:
5
Step-by-step explanation:
[tex]\sqrt[3]{125}[/tex] = [tex]\sqrt[3]{5^3}[/tex] = 5
What is the domain of the function represented by the graph?
4
1
2-+
X
-2
TUL
NELL
A. X54
OB. all real numbers
C.
X20
OD
OsXs4
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Answer:
Option C x>0
GOOD LUCK FOR THE FUTURE ! :)
All real numbers (In interval form (-∞,∞) )
What is domain?The domain of a function is the set of values that we are allowed to plug into our function. This set is the x values in a function such as f(x). This set is the values that the function shoots out after we plug an x value in.
here, we have,
Given,
From the graph,
To find the domain of the function.
Now,
We know that a domain of a function is the set of the all the x-values for which the function is defined.
By looking at the graph of the function we see that it is a graph of a upward open parabola and the graph is extending to infinity on both the side of the x-axis this means that the function is defined all over the x-axis i.e. for all the real values.
Also, we know that the function will be a quadratic polynomial since the equation of a parabola is a quadratic equation and as we know polynomial is well defined for all the real value of x.
The domain of the function is:
Hence, All real numbers (In interval form (-∞,∞) )
Learn more about Domain at:
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15. Which statements are true about
square EFGH? Select all that apply.
20.
P
E
н
A FP=2(EG)
© MZEFH = 45
DFH I EG
B) EP= EH
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Answer:
[tex]EG \perp FH[/tex]
[tex]m\angle EFH = 45^\circ[/tex]
Step-by-step explanation:
Given
See attachment for square EFGH
Required
Select the true statements
The sides of the square are EF, FG, GH and HE while the diagonals are: EG and FH
The diagonals of a square meet at [tex]90^\circ[/tex] . This implies that: EG and FH are perpendicular i.e. [tex]EG \perp FH[/tex]
Also, the diagonals divide the angles at the edges ([tex]90^\circ[/tex]) into two equal angles ([tex]45^\circ[/tex])
This means that:
[tex]m\angle EFH = 45^\circ[/tex]
The other two options are false.
i.e.
[tex]EP \ne EH[/tex]
[tex]FP \ne 2(EG)[/tex]
Answer:
Step-by-step explanation:
Nine identical cakes weigh a total of 20¼ pounds. How much does each cake weigh? Simplify.
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Answer:
[tex]2\frac{1}{4}[/tex]
Step-by-step explanation:
20 1/4 = 20.25
20.25/9 = 2.25
2.25 = [tex]2\frac{1}{4}[/tex]
Each cake weighs 2.25 pounds.
The weight of each cake will be equal to 2(¹/₄).
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
A mixed expression, also known as a complex fraction, is a fraction that contains a fraction in the numerator, the denominator, or both the numerator and the denominator.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that Nine identical cakes weigh a total of 20¼ pounds.
20(¹/₄) = 20.25
20.25/9 = 2.25
2.25 = 2(¹/₄).
To know more about an expression follow
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Expand to write an equivalent expression: -1/4(-8x+12y)
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Which exponential function is represented by the graph ?
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Answer:
amogusStep-by-step explanation:
3x+2.2is equal to x=1.7
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Answer:
7.3 answer
Step-by-step explanation:
x=1.7
now
3x+2.2
3×1.7+2.2
7.3
The number of cell phones that employees at a factory can assemble is directly proportional to the number of hours the employees spend assembling cell phones. The employees can assemble 1,576 cell phones in 8 hours. If these employees continue to work at the same rate, how many cell phones will they assemble in 53 hours?
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Answer:
10,441
Step-by-step explanation:
The number of cell phones the employees can assemble in 53 hours will be 10441.
What is the rate of change?The rate of change is the change of a quantity over 1 unit of another quantity.
Most of the time the rate of change is the change with respect to time.
For example the speed 3meter/second.
As per the given,
1,576 cell phones in 8 hours.
Number of cell phones sells per hour or rate of change,
1576/8 = 197 cell phones/hour.
The number of cell phones sells in 53 hours,
197 cell phones/hour x 53 = 10441 cells phones.
Hence "The number of cell phones the employees can assemble in 53 hours will be 10441".
To learn more about the rate of change here,
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Igor and sally both tan the same distance. Igor completed The distance in two hours. His average speed was 6 mph. Sally completed the distance in four hours. What with Sally is average speed for the journey? Give your answer in miles per hour
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Answer: 3mph
Step-by-step explanation:
Speed is calculated as Distance/Time.
Igor's distance = Speed × Time
= 6 × 2
= 12m
Since they ran same distance, Sally also ran 12m
Sally's speed = Distance/Time
where,
Distance = 12m
Time = 4 hours
Average speed = 12/4 = 3mph
A welcome kit contains 3 grocery store and seven drugstore coupons. The coupons are worth $45. Another welcome kit contains three grocery store coupons and six drugstore coupons worth $42. What is the value of each grocery coupon and each drug store coupon?
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Answer:
The value of each grocery store coupon is $6
Then the value of each drugstore coupon is $3.
Step-by-step explanation:
Let's define:
G = value of a grocery store coupon.
D = value of a drugstore coupon.
We know that:
"A welcome kit contains 3 grocery store and seven drugstore coupons. The coupons are worth $45"
We can write this as:
3*G + 7*D = $45
And we also know that:
"Another welcome kit contains three grocery store coupons and six drugstore coupons worth $42"
We can write this as:
3*G + 6*D = $42
Then we have the system of equations:
3*G + 7*D = $45
3*G + 6*D = $42
To solve this, we can isolate the term "3*G" in one of the equations (because it appears on both of them)
Let's isolate it on the second equation:
3*G = $42 - 6*D
Now let's replace this on the first equation:
($42 - 6*D) + 7*D = $45
$42 + D = $45
D = $45 - $42 = $3
Then the value of each drugstore coupon is $3.
And we also have the relation:
3*G = $42 - 6*D
We can just replace the value of D to get:
3*G = $42 - 6*$3 = $42 - $24 = $18
G = $18/3 = $6
The value of each grocery store coupon is $6
Answer number 8 please I’m begging u
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Answer:
Probability - spinner 1
1/5 - not likely
Probability - spinner 2
1/8 - not likely
Step-by-step explanation:
PLEASE I NEED HELP!
which is the simplified rational expression for r^2-4r+5/r-4 - r^2+2r-8/r-4
C is incorrect!
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Answer:Complete the statements.
When r = 2, the first expression is . 6
When r = 2, the second expression is 6.
When r = 5, the first expression is 21.
When r = 5, the second expression is .
The expressions are not equivalent. 12
Step-by-step explanation:
i got it right on e d g e n u i t y
Step-by-step explanation:
911÷406 con operaciones
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Answer:
2.24384236453
Step-by-step explanation:
division/división
Answer:
Step-by-step explanation:
2.24384236453 divicion y divicion
Si el ángulo interior de un polígono regular mide 144° ¿cuantos lados tiene el polígono regular?
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Answer:
Peste de angolo, yawa ka ano, imo, lenguahe you pathetic yawa ka translate onion in the body of the Government agency or office wherein in a way that you may not have 3173 with the Philippines as they will not form the basis of the Government agency or office wherein you can also use the information to help you to get to your local area by using the information provided by the stator and other information centres in St Albans and you will be required for the information to help with your
Which expression shows the factored form of 16x + 12y - 4 PLZZZZZZZ HELP I WILL LIST YOU BRIANEST
answers:
4(4x +3y)
4(4x +3y – 1)
16(x +4y – 12)
A.14xy
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Answer:
It is 4(4x + 3y - 1) I just did this quiz
Step-by-step explanation:
HURRY ITS DUE IN 10 MINUTES
1. How do cells in an organism function?
2. Compare and contrast how producers and consumers get energy?
3. How do plant cells make food?
4. How do you think water and carbon-dioxide used for photosynthesis get into the plant's leaf?
5. What are the starting materials in photosynthesis?
6. What is the chemical equation for photosynthesis?
7. How do cells get energy from food?
8. What are the starting materials in cellular respiration?
9. What is the main cell organelle used in photosynthesis? Used in cellular respiration?
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When placed near a second charge, a 60-μC charge experiences a force of 0.30 N. What is the electric field strength at the location of the 60-μC charge? What is the strength of the electric field at the location of the test charge?
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Answer:
[tex]E=5000N/C[/tex]
Step-by-step explanation:
From the question we are told that
Charge [tex]q= 60 \mu C[/tex]
Force [tex]F_=0.30N[/tex]
Generally the equation for electric field strength is mathematically given as
[tex]E=F/q[/tex]
[tex]E=\frac{0.30}{60*10^-^6}[/tex]
Therefore
[tex]E=5000N/C[/tex]
Can anyone help? Thanks
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Answer:
jmmbnmmnbhm
Step-by-step explanation:
5y7ik6rto8i7tipupuj
Jorge's soccer team is having its annu fundraiser. The team hopes to earn no less than three times as much as it did last year. This year the team earned $87. Write and solve an inequality to represent the team's earnings from last year.
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Step-by-step explanation:
Last year, Jorge's team earned $87. This year it wants to earn three times that amount. Therefore:
Goal for this year = 3 x (Last year's earning) = 3 x $87 = $261.
Whoever gives me the correct answer to this will get a brainlest
I need the answer ASAP!
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Volume of cone= 1/3πr^2h
8842.24 m^3= 1/3πr^2h
1/3*3.14*33*r^2= 8842.24m^3
r^2 = 8842.24*3/3.14*33
r^2= 26526.72/103.62
r^2 = 256
r= √256
r= 16m
Hope it helps. Please mark brainliest.
The rectangle below has an area of 49-x^249−x 2 49, minus, x, squared square meters and a width of 7+x7+x7, plus, x meters. What expression represents the length of the rectangle?
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Answer:
7-x meters
Step-by-step explanation:
Answer: (7-x)
Step-by-step explanation: khan
A restaurant bill before tax is $15.50. How much is a 15% tip for this bill?
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Answer:
for 1 person the tip is $2.33
Step-by-step explanation:
Which relation is a function?
{(5, 0), (–8, –5), (–8, 5), (–5, –8)}
{(5, 0), (0, 5), (–5, –5)}
{(5, 0), (0, –8), (5, –5)}
{5, 0, –8, –5}
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for a person who understands natural logs (ln) vs logs. Why do we use (ln) to inverse an equation when there is no e in the original equation?
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Answer:
Because e is used so commonly in math and economics, and people in these fields often need to take the logarithm with a base of e of a number to solve an equation or find a value, the natural log was created as a shortcut way to write and calculate log base e. ... So ln(x) = loge(x). As an example, ln(5) = loge(5) = 1.609.
Step-by-step explanation: