Find the value of the variable.

Mathematics

1 answer:

Marrrta [24]3 years ago

5 0

Set the 2 problems equal to each other and then slice for x.
And x is 58

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A circular piece of glass has a radius of 2.1 meters. The glass sells for $1.70 per square meter. What is the total cost of the

Vsevolod [243]

Hello!

To find the total cost, we will need to multiply the cost per square meter, by the total area. To find the area we will use the formula A=πr². We will use 3.14 for pi.

We know that 2.1 is our radius. We will square it and then multiply it by 3.14.

2.1²=4.41
4.41(3.14)≈13.85

Our area is about 13.85. Now we will multiply by $1.70 to find the total cost. This gives us about $23.55.

The total cost of the glass would be about $23.55.

I hope this helps!

6 0

3 years ago

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If y varies inversely as x, and y = 23 when x 8, find y when x 4.

Virty [35]

Answer:

y = 46

Step-by-step explanation:

Given y varies inversely as x then the equation relating them is

y = $\frac{k}{x}$ ← k is the constant of variation