2 years ago

Number 13. Multiply please.

Mathematics

1 answer:

Dafna11 [192]2 years ago

8 0

$(x-y)^2 \\\\\\= (x-y)(x-y)\\\\= x * x + (x)(-y)+(-y)(x) +(-y)(-y)\\\\ = x^2 -xy-xy + y^2\\\\=x^2-2xy + y^2$

Hope that helps!

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The function f(x)=5x+4f(x)=5x+4 models the height of a tree, where x represents the years since the tree was planted for year 3

Romashka [77]

"all real numbers between 3 and 10 inclusive" could not be the answer, because these are x-values (values of the independent variable).

"all real numbers between 19 and 54 inclusive" is the range. Why? Because in year 3, f(3) = height of tree = 5(3) + 4 = 19 feet.

In year 10, f(10) = 5(10) + 4 = 54 feet.

6 0

4 years ago

Solve the equation -25p – 2 = 48 for p. A. -2 B. 1 C. 3 D. 8

konstantin123 [22]

Answer:

A. -2

Step-by-step explanation:

-25p - 2 = 48

First, add 2 to both sides

That gives you

-25p = 50

Then, divide both sides by -25. Then that leaves the answer.. p = -2