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Ostrovityanka [42]
4 years ago
6

How do I solve -1/2-4x=8

Mathematics
1 answer:
USPshnik [31]4 years ago
7 0
X=-17/8
Step 1: Simplify both sides of the equation.
−1/2−4x=8
−1/2+−4x=8
−4x+−1/2=8
Step 2: Add 1/2 to both sides.
−4x+−1/2+1/2=8+1/2
−4x=17/2
Step 3: Divide both sides by -4.
−4x/-4=17/2/-4
=−17/8
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Whats 3.2r + 14.7=6.74
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<u><em>r=-199/80 is the right answer.</em></u> First, you had to multiply by 100 from both sides of the equation. And it gave us, 3.2r*100+14.7*100=6.74*100. Next, you had to refine, and it gave us, 320r+1470=674. Then, subtract by 1470 from both sides of equation. And it gave us, 320r+1470-1470=674-1470. Simplify, and it gave us, 320r=-796. You can also divide by 320 from both sides of equation. And it gave us, \frac{320r}{320}=\frac{-796}{320}. And finally, simplify, and it gave us the answer is <em><u>r=-199/80 is the right answer.</u></em> Hope this helps! And thank you for posting your question at here on brainly. And have a great day! -Charlie

6 0
3 years ago
Read 2 more answers
Caroline is considering two video game rental plans. Plan A can be modeled with the equation C = 2n, and Plan B can be modeled w
meriva

Options

A. Caroline rents exactly 7 games each month.

B. Caroline rents exactly 6 games each month.

C. Caroline rents 6 or more games each month.

D. Caroline rents from 1 to 5 games each month.

Answer:

D. Caroline rents from 1 to 5 games each month.

Step-by-step explanation:

Given

Plan A:

C = 2n

Plan B:

C = n + 6

Required

Which options justifies A over B

The solution to this question is option (d).

In option d, n = 1,2,3,4,5

When any of the values of n is substituted in plan A and B, respectively; the cost of plan A is cheaper than plan B.

This is not so, for other options (A - C)

To show:

Substitute 1 for n in A and B

Plan A:

C = 2n  = 2 * 1 = 2

Plan B:

C = n + 6 = 1 + 6 = 7

Substitute 5 for n in A and B

Plan A:

C = 2n  = 2 * 5 = 10

Plan B:

C = n + 6 = 5 + 6 = 11

<em>See that A < B</em>

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4 years ago
State the domain and range for the function f(x) = 2x2 – 7. Show all steps, please.
polet [3.4K]
2x^2 - 7 

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so the range is  f(x) <= -7    or  (-∞, -7]
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