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Anna [14]
3 years ago
10

Someone please help me with #15

Mathematics
1 answer:
harina [27]3 years ago
6 0

Answer:

b. A year and a half

Step-by-step explanation:

First, we can find the total cost

1512+263=1775

Next, we can divide by 50 in order to find out how many months it will take for the panel to pay for itself.

\frac{1775}{50} =35.5 months

This is very close to 36 months, which is <u>A year and a half</u>.

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It takes 2 hours to drive 80 miles and 4 hours to drive 160 miles. Find the rate of change. I need this asap
natita [175]

Answer:

40 miles per hour

Step-by-step explanation:

80 divided by  2 is 40

160 divided by 4 is 40

5 0
3 years ago
12 to the power of 2 minus 6 to the power 2 times 3 to the power of 4 plus 5 to the power of 3?
Marina86 [1]
12^2 - 6^2 * 3^4 + 5^3

(144) - (36) * (81) + (125)
144 - (36 * 81) + 125
144 - 2916 + 125
-2,772 + 125
-2,647
5 0
4 years ago
Read 2 more answers
Help me answer this thanks
Doss [256]

Answer:

c = 15 meters

Step-by-step explanation:

This is solveable using the Pythagorean Theorem,

let's say a = 9 and b = 12,

a^2 + b^2 = c^2, so

9^2 + 12^2 = 225 then,

sqrt(225) = 15, so c = 15 m

7 0
3 years ago
Read 2 more answers
Which model represent the factors of 4x2-9
lions [1.4K]

Step-by-step explanation:

4x²-9

4x²+6x-6x-9

4x²+6x-6x-9

2x(2x+3)-3(2x+3)

2x(2x+3)-3(2x+3)

(2-3)(2x+3)

solution

(8x-3)(2x+3)

6 0
2 years ago
Can any one help me lease I do not under stand.
svetoff [14.1K]

Answer: the cube root of 512 is 8.

Step-by-step explanation:

First divide 512 and take the least factors as I have shown,

512= 2×2×2×2×2×2×2×2×2

Now, make the triple twins of these factors,

(2×2×2)(2×2×2)(2×2×2)

Now, take one number from each pair and multiply them,

2×2×2=8

Therefore, the answer of the cube root of 512 is 8.

4 0
3 years ago
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