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sweet [91]
3 years ago
11

Please help i don’t know how to do this

Mathematics
1 answer:
Masteriza [31]3 years ago
6 0

Answer: A

Step-by-step

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What expression is equivalent to 9^-2
FinnZ [79.3K]

1÷81 because you square it

7 0
3 years ago
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SSSSS [86.1K]

Answer:

mint

Step-by-step explanation:

3 0
3 years ago
What is the difference <br> A <br> B<br> C<br> D
aksik [14]

Answer:

D. \frac{x-1}{x^2+3x+2}}

Step-by-step explanation:

The given expression is;

\frac{x}{x^2+3x+2}-\frac{1}{(x+2)(x+1)}

This is the same as;

\frac{x}{(x+2)(x+1)}-\frac{1}{(x+2)(x+1)}

The denominators are the same.

Subtract the numerators and write one denominator;

\frac{x-1}{(x+2)(x+1)}}

Rewrite to get;

\frac{x-1}{x^2+3x+2}}

4 0
3 years ago
PLEASE SHOW YOUR WORK!!!<br><br><br><br><br><br> Solve for y: 3^3 + 14 y- (25y - 13) = y + 7y - 9y
Marina86 [1]
<h2 /><h2>⟹</h2>

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

3^3+14*y-(25*y-13)-(y+7*y-9*y)=0

Equation at the end of step 1

((3³ + 14y) - (25y - 13)) - -y = 0

Pull out like factors :

40 - 10y = -10 • (y - 4)

Equation at the end of step3:

-10 • (y - 4) = 0

STEP4:

Equations which are never true:

Solve : -10 = 0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation:

Solve : y-4 = 0

Add 4 to both sides of the equation :

y = 4

<h2>y = 4</h2>

6 0
3 years ago
Perform the indicated operation.<br> (w^3 +64)/(4+ w)
timurjin [86]

Answer:

(w^2 - 4w + 16)

Step-by-step explanation:

Note that w^3 +64 is the sum of two perfect cubes, which are (w)^3 and (4)^3.  The corresponding factors are (w + 4)(w^2 - 4w + 16).

Therefore,

(w^3 +64)/(4+ w) reduces as follows:

   (w^3 +64)/(4+ w)      (4 + w)(w^2 - 4w + 16)

--------------------------- = --------------------------------- =  (w^2 - 4w + 16)

             4 + w                     4 + w

6 0
3 years ago
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