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3 years ago

SOMEONE PLEASE HELP ME!!!!! Choices: A: 35 B: 135 C: 45 D:55

Mathematics

2 answers:

Sedbober [7]3 years ago

8 0

The answer is 45, if you solve

Darina [25.2K]3 years ago

4 0

The exterior angles of any polygon add to 360 degrees.

If we call the interior angles A,B,C,D,E that means

(180-A) + (180-B) + (180-C) + (180-D) + (180-E) = 360

5(180)-360 = A+B+C+D+E

A+B+C+D+E = 540 degrees

So we know the indicated interior angles add to 540.

90 + 148 + 3x + x+10 + 112 = 540

4x + 360 = 540

4x = 180

x = 45

Answer: Choice C: 45

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3 years ago

You have a 1.5 litre bottle of water and drink 295 millilitres. Your friend drinks 135 millilitres. How much is left?

inna [77]

Convert liters to milliliters so that you have one unit for all of the amounts in the question.

1 liter is equal to 1000 milliliters, so multiply the 1.5 liters you have by 1000:

$1.5 * 1000 = 1500$

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$1500 - 295 - 135 = 1500 - 430 = 1070$

There is 1070 milliliters of water left in the bottle.

If you want to find the amount remaining in the bottle in liters, divide the amount remaining by 1000 to convert milliliters to liters:

$1070 / 1000 = 1.07$

Converted back into liters, there is 1.07 liters of water left in the bottle.

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3 years ago