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goblinko [34]
3 years ago
11

Answer these please, I'm having a little trouble

Mathematics
1 answer:
forsale [732]3 years ago
8 0
It's unreasonable to hope or expect that someone will do a whole sheet of problems for you.

I've arbitrarily chosen to help you with #25:

4x - 9 + 3x + 6 - 9x - 4

Group the x-terms together.  Then group the constants together:

4x + 3x - 9x - 9 + 6 - 4

-2x - 7           (answer)
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0.1 is 10% of what number?
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Let's assign a variable that is the number when multiplied by 10% it is equal to 0.1.

Well let that be x.

Now we want to convert the 10% into a decimal. To convert a percent into a decimal, simply move the % sign two places to the left and make it into a decimal point.

When we say "of" in mathematics what we really mean is to multiply.

0.10 * x = 0.1

That is the equation we need to find the value of x for.

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Answer: most likely to be C

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3 years ago
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An engineer created a scale drawing of a building using a scale in which 0.25 inch represents 2 feet. The length of the actual b
Nady [450]

The length of the building in the scale drawing is 31. 25 Inches

<h3>How to determine the value</h3>

From the information given, we have that;

  • Scale drawing was used
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Then,

If 0. 25 inches = 2 feet

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cross multiply
x × 2 = 0. 25 × 2500

Multiply through, we have;

2x = 62. 5

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7-x what does it equal.
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