3 years ago

Solve for x: -0.25(-x-12)=2

1 answer:

5 0

Expand the brackets by multiplying everything in the brackets by -0.25.

-x x -0.25 = 0.25x
-12 x -0.25 = 3

0.25x + 3 = 2

-3 from both sides.

0.25x = -1

Divide both by 0.25

x = -4

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Simplify (125)^-2/3 with positive exponents and no radicals <br>show all work.<br>PLEASE HELP

Reptile [31]

For this case, what you should keep in mind are the following considerations:

1) Rewrite the expressions correctly using the properties of the exponents: Addition, multiplication, division, subtraction and negative exponents.

2) Simplify the expression as much as possible.

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See attached image.

3 0

3 years ago

Please help me solve this math problem

pochemuha

Answer:

(b)

Step-by-step explanation:

A suitable calculator or spreadsheet can find the matrix product for you. Here, the answer choices differ in their upper left term, so we can determine the correct choice by finding the value of that term. It is the dot product of the first row of B and the first column of A.

(5)(3) +(7)(3) +(3)(2) = 15 +21 +6 = 42

This matches choice B.