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Alinara [238K]
3 years ago
14

12) Twenty cubic feet of marble can weigh 3400 pounds, plus or minus 100

Mathematics
1 answer:
andrezito [222]3 years ago
4 0

Answer:

Let's suppose that one cubic foot of marble is x.

20x = 3400

But because the weight has a range of +-100, then 20x is between 3300 and 3500. Write it like this:

3300<20x<3500

Divide by 20:

165<x<175

The meaning of this is that one cubic foot of marble weight between 165 and 175 pounds

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Answer:

Option B

Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
Please help!
postnew [5]
Lets solve the equation first:
<span> 0.5 – |x – 12| = –0.25
</span>= 1/2 - |x - 12| = -1/4
= 2 - 4<span>|x - 12| = -1
= 4|x - 12| = 3
= |x - 12| = 0.75
positive case, x >= 12
x - 12 = 0.75
x = 12.75
negative case, x < 12
x - 12 = -0.75
x = 11.25
So those are the two solutions.
These apply:
</span>1.) The equation will have no solutions.
2.) A good first step for solving the equation is to subtract 0.5 from both sides of the equation.
<span>3.) A good first step for solving the equation is to split it into a positive case and a negative case.
</span><span>5.) The negative case of this equation is x – 12 = –0.75.</span>
7 0
3 years ago
Read 2 more answers
Write a problem in which $180 would be a reasonable answer​
ad-work [718]

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Regular problem: $20+$15+$20+$100+$25=180

Step-by-step explanation: I didn't know what you needed. I'm sorry if that's not it, but hope it helps.

7 0
2 years ago
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First term, a
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Second term, a
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d=8−4=4
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3 years ago
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3 years ago
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