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ollegr [7]
2 years ago
11

Find the area of a rectangle whose length is 5x + 7 and whose width is 2x, in terms of x

Mathematics
1 answer:
NikAS [45]2 years ago
7 0

Answer:

A=10x^2+14x

Step-by-step explanation:

A=wL

w=2x

L=5x+7

A=2x(5x+7)

A=10x^2+14x

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Which expression is equivalent to 8(u + 3)?
Korolek [52]

Answer:

<h2>8(u + 3) = 8u + 24</h2>

Step-by-step explanation:

8(u+3)\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\=(8)(u)+(8)(3)=8u+24

5 0
3 years ago
Write a few sentences about different was to show subtraction for a problem like 32-15
iogann1982 [59]
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8 0
3 years ago
Can anyone help me with this question please?
Oxana [17]

Answer:

y=35z+20

Step-by-step explanation:

Y is the total cost, so it goes on the outside. 35z represents the months of service because you multiply 35 by however many months there are (for example, if you had 3 months, you'd have $35 3 times). Finally, the $20 is tacked onto the end because that's the initial payment to open an account

7 0
2 years ago
Find the average rate of change between f(-7) and f(-1) in the function f(x)=x^2+2x -8
Levart [38]

Answer:

- 6

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

\frac{f(b)-f(a)}{b-a}

here [ a, b ] = [ - 7, - 1 ]

f(b) = f(- 1) = (- 1)² + 2(- 1) - 8 = 1 - 2 - 8 = - 9

f(a) = f(- 7) = (- 7)² + 2(- 7) - 8 = 49 - 14 - 8 = 27

Hence

average rate of change = \frac{-9-27}{-1-(-7)} = \frac{-36}{6} = - 6

4 0
3 years ago
PLEASE HELP 10 POINTS
allochka39001 [22]

Divide 16/2 to get 8. Then multiply 3.14 x 8 x 8. That gives you 200.96 m. Hope this helps!

3 0
2 years ago
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