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3 years ago

What is the area of a circle with a radius of 6 inches?

Mathematics

1 answer:

Irina18 [472]3 years ago

5 0

Answer:

Step-by-step explanation:

A circle of radius = 6 or diameter = 12 or circumference = 37.7 inches has an area of:

7.29676 × 10 -8 square kilometers (km²)

0.0729676 square meters (m²)

729.676 square centimeters (cm²)

7.29676 × 10 4 square millimeters (mm²)

2.81729 × 10 -8 square miles (mi²)

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David is saving $250 to buy a bicycle. He saved $8 each week for 12 weeks. He wants to buy the bicycle in 7 more weeks. How much

Colt1911 [192]

Answer:

Step-by-step explanation:

Amount saved = $8 x 12 weeks

= $96

Amount to save = $250- $96

= $154

Amount per week= 154/7

= $22

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3 years ago

Based only on the information given in the diagram, which congruence theorems could be given as reasons why ABC ~ UVW? Check all

xz_007 [3.2K]

The right answers are LA and ASA

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3 years ago

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Sean tossed a coin off a bridge into the stream below. The path of the coin can be represented by the equation 2 h tt = − 16t^2+

tekilochka [14]

Answer:

It will take 5.61 seconds for the coin to reach the stream.

Step-by-step explanation:

The height of the coin, after t seconds, is given by the following equation:

$h(t) = -16t^{2} + 72t + 100$

How long will it take the coin to reach the stream?

The stream is the ground level.

So the coin reaches the stream when h(t) = 0.

$h(t) = -16t^{2} + 72t + 100$

$-16t^{2} + 72t + 100 = 0$

Multiplying by (-1)

$16t^{2} - 72t - 100 = 0$

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

$16t^{2} - 72t - 100 = 0$

$a = 16, b = -72, c = -100$

$\bigtriangleup = (-72)^{2} - 4*16*(-100) = 11584$

$t_{1} = \frac{-(-72) + \sqrt{11584}}{2*16} = 5.61$

$t_{2} = \frac{-(-72) - \sqrt{11584}}{2*16} = -1.11$

Time is a positive measure, so we take the positive value.

It will take 5.61 seconds for the coin to reach the stream.

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4 years ago

Look at the figure. If m∠JKM = 48, find m∠J.

vladimir2022 [97]

Answer:

Step-by-step explanation:

The measure of angle K is 48, the measure of angle m is 90. From there you have 138 degrees. A triangle is 180 degrees. You subtract 138 from 180.

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SVETLANKA909090 [29]

The unit of measurement appropriate for this would be meters^2

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3 years ago

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