2 years ago

Please help I’ll give Brainlist

Mathematics

1 answer:

melisa1 [442]2 years ago

7 0

Your answer is D! 28^3 = 21,952 :)

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-3(n + 5) = 12<br> solve^

UNO [17]

Answer:

n= 1

Step-by-step explanation:

-3n + 15 =12

-15. -15

-3n= - 3

÷-3 ÷-3

n= 1

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3 years ago

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Which statement is true?

Sloan [31]

I believe the last one about right triangles. That’s why Pythagorean Theorem works.

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3 years ago

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Trey is putting up a fence around a 750 foot by 540 foot lot. How many feet of fence dose he need?

anygoal [31]

Given:

The length of the lot l= 750ft

The width of the plot w= 540 ft

Required:

Find the required fence.

Explanation:

The perimeter of the rectangle is given by the formula.

$P=2(length+width)$

Thus the required fence for the lot

$\begin{gathered} =2(750+540) \\ =2(1290) \\ =2580\text{ ft} \end{gathered}$

Final answer:

The required fence is 2580 ft.

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1 year ago

The equation, y = 12841(1.01)x , represents the average cost of an education at a private college, after 1990. What is the avera

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The average cost in 1990 is <span>$12,841.</span>

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3 years ago

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If x=-7 is a root of the equation x^2+kx+49=0, then k=

aleksley [76]

Answer:

$k=14$

Step-by-step explanation:

Given:

$x^{2}+kx+49 = 0$

$x = -7$

Substitution can be used to find the value of $k$ :

$(-7)^{2}+(-7)k+49 = 0$

$49-7k+49 = 0$

$98 -7k = 0$

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Hope this helps :)

8 0

3 years ago