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3 years ago

Help me i need it what is the answer 70-35=20+____

Mathematics

2 answers:

Liula [17]3 years ago

8 0

Answer:

Step-by-step explanation:

70-35=35

20+15=35

35=35

So,70-35=20+15

Lina20 [59]3 years ago

6 0

Answer:

The number needed is 15

Step-by-step explanation:

<u>Step 1: Solve for x</u>

70 - 35 = 20 + x

70 - 35 - 20 = 20 + x - 20

15 = x

Answer: The number needed is 15

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4 years ago

The diameter of a quarter is 24.26 mm and the diameter of a nickel is 21.21 mm. How much bigger is the distance around a quarter

olga55 [171]

Answer:

9.577 mm.

Step-by-step explanation:

We have been given that the diameter of a quarter is 24.26 mm and the diameter of a nickel is 21.21 mm.

Let us find the circumference of quarter and nickel using circumference of circle formula.

$\text{Circumference of circle}=2\pi r$ , where r represents radius of the circle.

Since we know that diameter of circle is 2 times its radius, so let us find radius of quarter and nickel by dividing their diameter by 2.

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$\text{Circumference of quarter}=2\times 3.14\times 12.13$

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Therefore, circumference of quarter is 76.1764 mm.

Let us find circumference of nickel.

$\text{Circumference of nickel}=2\times 3.14\times 10.605$

$\text{Circumference of nickel}=66.5994$

Let us subtract circumference of nickel from circumference of quarter.

$\text{The difference between distance around quarter and nickel}=76.1764-66.5994$

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