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KonstantinChe [14]

3 years ago

15

The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is nine

2 answers:

stealth61 [152]3 years ago

6 0

Divide the measure of all 3 angles into 10 parts...1 part is the measure of angle x, and the other angles add up to the other 9 parts. 180/10=18...so x = 18.
So angle y and z together add up to the other 162 degrees.
Divide 162 in half to find the “middle”...162/2=81.
Since we were told that the difference between y and z is 20...y would be 10 less than that middle number, and z would be 10 more than it...so y=71, and z=91.
The answers are...
X=18, Y =71, Z=91

UkoKoshka [18]3 years ago

4 0

Yea I agree that the correct answer
Ok

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BARSIC [14]

Answer:

1012

Step-by-step explanation:

She eats 1012 because:

If she eats 45 in 2 minutes then she eats 22.5 in 1 minute.

This is because 45 ÷ 2 = 22.5

Sarah eats blueberries for 45 minutes so we multiply 22.5 by 45

22.5 × 45 = 1012.5

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3 years ago

What is the approximate diameter of a tire that will make 775 complete rotations in one mile? (Note: there are 5280 feet

GalinKa [24]

Answer:

About 2.17 feet.

Step-by-step explanation:

Let <em>d</em> represent the diameter of the tire.

Then the circumference of the tire will be:

$C=d\pi$

So, the tire will travel dπ miles after one rotation.

After 775 rotations, the total miles traveled should be 5280 feet. Thus:

$775(d\pi)=5280$

Solve for <em>d:</em>

<em /> $\displaystyle d=\frac{5280}{775\pi}$ <em />

Approximate:

$d=2.1686...\approx2.17$

The circumference of the tire should be about 2.17 feet.

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Step-by-step explanation:

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