All categories

3 years ago

Simplify the expression: 7 - 7(5 + x) - 9x Your answer

Mathematics

1 answer:

Gekata [30.6K]3 years ago

5 0

Answer:

-16x-28

Step-by-step explanation:

Break it into little pieces; start with distributing the -7:

-7(5+x)

-35-7x

Now add the rest of the problem: 7-35-7x-9x

Combine like terms: 7-35 7x-9x

7-35=-28 7x-9x=-16x

Rearrange so the coefficient and variable are upfront, giving you:

-16x-28

You might be interested in

A store pays $60 for shoes and sells them for $90. What is the percent mark up?

Anton [14]

Answer:

50%

Step-by-step explanation:

5 0

2 years ago

WILL MARK BRANLIEST!! 15 POINTS!!

mihalych1998 [28]

Corresponding angles

3 0

3 years ago

Simplify. (2/5)^4... words to fill in minimum space

Stella [2.4K]

When you have a power to a fraction, you simply take it by the top and then by the bottm.

So, split it into two: (2)^4 and (5)^4

Solve: (2)^4=16
(5)^4=625

So the fraction is: 16/625

Check to see if it reduces: It doesn't. (Odd and even numbers that have no common multiples).

Therefore, that's the answer.

3 0

3 years ago

Suppose you have 100 ft of string to rope off a rectangular section for a bake sale at a school Fair. The function A=x^2+50x giv

cupoosta [38]

Answer:

Therefore the width is 25 feet for getting maximum area.

The maximum area of the rectangle is 625 square feet.

Therefore the range is 0≤A≤625.

Step-by-step explanation:

Given function is

A = - x²+50x

We know that ,

If y = ax²+bx+c

For the maximum $x=-\frac{b}{2a}$

Here a = -1 , b= 50 and c=0

Therefore the width $x= -\frac{50}{2.(-1)} = 25$

Therefore the width is 25 feet for getting maximum area.

The maximum area =[ -(25)²+50.25] square feet

= 625 square feet

The area can not be negative and maximum area is 625 square feet.

Therefore the range is 0≤A≤625.

5 0

3 years ago

Which of the binomials below is a factor of this trinomial?<br><br> x2 + 8x + 16

Gre4nikov [31]

X^2 + 8x + 16 =
(x + 4)(x + 4) or (x + 4)^2

4 0

3 years ago