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3 years ago

Which expression is equivalent to –3.6x + 48?

Mathematics

1 answer:

Anna11 [10]3 years ago

7 0

Answer:

D. -1.2(3x-40)

Step-by-step explanation:

Multiply -1.2 x 3x and -1.2 x -40.

-1.2 x 3x= -3.6x

-1.2 x -40= 48 (two negatives cancel each other out, so it will be +48)

= -3.6 +48.

You can also automatically eliminate B. and C. because multiplying the -4 within the perenthesis would not give you 48.

A. says (3x + 40), which would give us a negative 48.

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What the answer to this math problem 6x-8=4(x+2)-7 ?

faust18 [17]

Answer:

x = 9/2

Step-by-step explanation:

6x - 8 = 4(x + 2) - 7

Distribute on the right side.

6x - 8 = 4x + 8 - 7

Combine like terms on the right side.

6x - 8 = 4x + 1

Add 8 to both sides. Subtract 4x from both sides.

2x = 9

Divide both sides by 2.

x = 9/2

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4 years ago

There are 2 red, 3 blue, and 4 green marbles in a jar?<br><br> What does the ratio 4 to 9 represent?

MrMuchimi

Hello!

How many marbles are in the jar all together?

3 + 2 + 4 = 9

We also know that there are 4 green marbles in the job.

So, I would assume that the answer is;

Green Marbles : Total Marbles or Green Marbles to Total Marbles.

<em>waffletowne</em>

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3 years ago

Find formulas for X, Y, and Z in terms of A, B, and C. It may be necessary to make assumptions about the size of a matrix in o

vfiekz [6]

Answer:

Here the answer is given as follows,

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3 years ago

A number r decreased by 13 is at most 15

ycow [4]

R - 13 <= 15

Add 13 to both sides:

r <= 28

Note '<=' is less than or equal to.

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4 years ago

Read 2 more answers

Find all the real square roots of a. .0064 and b. -.0081

nirvana33 [79]

Answers: 0.08 and -0.08; 0.09i and -0.09i.

When taking square roots, we take the positive and negative answers. This gives us the first answer.

For the second answer, we rewrite -0.0081 as a complex number:
$\sqrt{-0.0081}=\sqrt{0.0081i^2}=i\sqrt{0.0081}=\pm0.09i$

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