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3 years ago

Can you figure this out please..

Mathematics

1 answer:

Naddik [55]3 years ago

3 0

Answer:

n = 5, 6, 7

Step-by-step explanation:

Change the fractions into fractions with a denominator of 16

Multiply numerator/denominator by 4

$\frac{1}{4}$ = $\frac{4(1)}{4(4)}$ = $\frac{4}{16}$

Multiply the numerator/denominator by 8

$\frac{1}{2}$ = $\frac{8(1)}{8(2)}$ = $\frac{8}{16}$

Thus $\frac{n}{16}$ is between $\frac{4}{16}$ and $\frac{8}{16}$

Meaning it can be any of

$\frac{5}{16}$ , $\frac{6}{16}$ , $\frac{7}{16}$ with n = 5, 6, 7

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Find the perimeter and the area of each shape. Give your answer as a completely simplified exact value in terms of π (no approxi

nydimaria [60]

Answer:

Circumference: 12π + 8 cm,

Area: 48 ( cm )^2

Step-by-step explanation:

This figure is composed of circles, squares, and semicircles. As you can see, the squares indicate that each semicircle should have ( 1 ) the same area, and ( 2 ) the same length ( circumference ). It would be easier to take the circumference of the figure first, as it is composed of arcs part of semicircles the same length.

Circumference of 1 semicircle = $\frac{1}{2}$ ( πd ) = $\frac{1}{2}$ π( 4 ) = 2π ( cm )

Circumference of Figure (composed of 6 semicircles + 2 sides of a square),

We know that 6 semicircles should be 6 $*$ 2π, and as the sides of a square are equal - if one side is 4 cm, the other 3 are 4 cm as well. Therefore the " 2 sides of a square " should be 2

Circumference of Figure = 6 $*$ 2π + 2 = 12π + 8 ( cm )

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The area of this figure is our next target. As you can see, it is composed of 3 semicircles, and the area of 3 semicircles subtracted from the area of 3 squares. Therefore, let us calculate the area of 1 semicircle, and the area of 1 square first.

Area of 1 semicircle = 1/2π $r^2$ = 1/2π $(2)^2$ = 2π ( cm ),