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iren [92.7K]
3 years ago
8

Pls answer for me I mark Brainlest​

Mathematics
1 answer:
schepotkina [342]3 years ago
5 0

Answer:

B. 54

Step-by-step explanation:

For surface area you have to plug in the side length to the Surface area equation being: A=6a^2

When you plug 3 in for a, you get 54

Hope this helped!

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An initial population of 415
slamgirl [31]

Answer:

The exponential function to model the duck population is:

f(n)=415*(1.32)^n, where:

x is the duck population

n is the number of years

Step-by-step explanation:

In order to calculate the duck population you can use the formula to calculate future value:

FV=PV*(1+r)^n

FV=future value

PV=present value

r=rate

n=number of periods of time

In this case, the present value is the initial population of 415 and the rate is 32%. You can replace these values on the formula and the exponential function to model the duck population would be:

f(n)=415*(1+0.32)^n

f(n)=415*(1.32)^n, where:

x is the duck population

n is the number of years

3 0
3 years ago
The repairs to Ryan's bike cost more than $50. Write an inequality that represents the cost of repairs r.
Talja [164]

If r is the cost of repairs, then the inequality is:

r > 50

7 0
3 years ago
select all the equations on which the point (10, 0) lies. A. 5x+2y=15 B. 2x+4y=20 C. x+6y=10 D. 3x+3y=13 E. 4x+2y=20 F. 6x+y=50
Maksim231197 [3]

Answer:

The answer to this problem is B, C, and E.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The formula for the volume of a rectangular prism is v=lwh what id the formula whem sloved for w
Deffense [45]
In order to isolate w, you would simply divide both sides by lh because divisionis the oppositeof multiplication which is currentlybeing done. After doing this, your answer is w = v/lh.

I hope this helps!
7 0
3 years ago
Benecio worked 40 hours at his two jobs last week. He earned $20 per hour at his weekday job and $18 per hour at his weekend job
gavmur [86]
Set up the following equations:

x + y = 40
20x + 18y = 770

x is the amount of hours worked on the weekday job, and y is the amount of hours worked on the weekend job.

We'll use substitution to remove one of the variables.

Multiply the first equation by -18 to get opposite coefficients for y:

-18x - 18y = -720

20x + 18y = 770

Combine these two equations together:

2x = 50

Divide both sides by 2 to get x by itself:

x = 25

Plug in x to the first original equation:

25 + y = 40

Subtract 25 from both sides to get y by itself:

y = 15

He worked 25 hours at his weekday job, and 15 hours at his weekend job.


3 0
4 years ago
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