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3 years ago

Find the value of x. Select one: a. 2.3 inches b. 3.3 inches c. 4.1 inches d. 6.1 inches

Mathematics

1 answer:

spayn [35]3 years ago

6 0

Answer:

c 4.1 inches

Step-by-step explanation:

The circumference of a circle is given by

C = 2*pi*r

The sector is only 78 degrees

Take the fraction of a circle and multiply by the circumference to find the length x

x = C* 78/360

= 2 * pi *r * 78/360

= 2 * pi *3 * 78/360

Using 3.14 for pi

= 4.082

Rounding to the nearest tenth

x = 4.1 inches

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Drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. How many fluid ounces of milk provide 72.5 milligrams of c

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Set up a proportion:

$\frac{8}{270} = \frac{x}{72.5}$

The numerator represents fluid ounces of milk, and the denominator represents milligrams of calcium.

Simplify the first fraction to make multiplication easier:

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Cross multiply the fractions:

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Divide both sides by 135 to get x by itself:

$290 \div 135 = 2.1$
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