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4 years ago

Explain how you know 21 over 30 is greater than 2 over 3

1 answer:

4 0

<span>So we need to explain how we know 21/30 is greater than 2/3. Well lets expand 2/3 by multiplying the numerator and the denumerator by 10. That way we get 20 / 30. Since 21/30 has 1/30 more than 20/30 we can clearly see that 21/30 is greater than 20/30 or 2/3.</span>

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MariettaO [177]

The answer is 40. Just multiply 10x4 and you get the answer

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3 years ago

Which angle pairs are supplementary? Check all that apply

polet [3.4K]

Answer:

The pairs of supplementary angles are

∠4 and ∠3 , ∠3 and ∠6 , ∠4 and ∠5 .

Step-by-step explanation:

Definition of supplementary angles

When sum of two angles are 180° they are called supplementary angles .

As figure given in the question

∠3 = 90°

Thus

∠3 + ∠6 = 180 °

(By using Linear pair property)

∠4 + ∠5 = 180 °

(By using Linear pair property)

∠3 + ∠4 = 180 °

(By using Linear pair property)

Therefore the pairs of supplementary angles are

∠4 and ∠3 , ∠3 and ∠6 , ∠4 and ∠5 .

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4 years ago

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The graph of f(x) = 3x2 – 5x – 22 passes through the point (0, –22) and one of its zeros is (–2, 0). What is the other zero of t

Anna [14]

Step-by-step explanation:

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3 years ago

The clocks radius is 10m. What is the circumference of the clock

mario62 [17]

Answer:

20π or 62.8 roughly

Step-by-step explanation:

Hello!

<u>The formula for finding the circumference of a circle is 2rπ:</u>

In that case, all we have to do is substitute 10m for our r.

2 × 10 = 20.

So circumference will be 20π.

Using 3.14 for π:

We get that 62.8 is a rough estimate for the circumference.

Really, it's 62.831..... going on forever since π is irrational.

Thus, the answer exactly is $\boxed{20\:\pi}}$ .

Hope this helps!

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3 years ago

A keyboard that costs $475 is marked down 15% for a sale. How much is the savings.

Brums [2.3K]

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2 years ago

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