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3 years ago

How to solve 3 and 4

Mathematics

1 answer:

Olenka [21]3 years ago

6 0

<h2><em>3 \ ALLOWANCE</em></h2><h2><em></em></h2><h2><em>A. How many total students do chores?</em></h2>

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HELP DUE IN 10 MINS! Use the Pythagorean Theorem to solve for x.

irakobra [83]

Answer:

B. 5sqrt(2)

Step-by-step explanation:

x² = 4² + (√34)²
x² = 16 + 34
x² = 50
x = √50
x = 5√2

8 0

2 years ago

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Find the values of x and y for which the quadrilateral must be a parallelogram.

BabaBlast [244]

Answer:

I believe you are right.

Step-by-step explanation:

All sides seem to be of similar length. The values you put in would make the sides equal so I would go with that one.

5 0

2 years ago

1.) A 20° sector in a circle has an area of 21.5π yd².

a_sh-v [17]

<u>Part 1)</u> A 20° sector in a circle has an area of 21.5π yd².

What is the area of the circle?

we know that

the area of a circle represent a sector of $360$ degrees

so by proportion

$\frac{21.5\pi }{20} =\frac{x}{360} \\ \\ x*20=360*21.5\pi \\ \\x=(360*21.5*3.14)/20\\ \\x= 1,215.18\ yd^{2}$

therefore

<u>the answer part 1) is</u>

The area of the circle is $1,215.18\ yd^{2}$

<u>Part 2)</u> What is the area of a sector with a central angle of 3π/5 radians and a diameter of 21.2 cm?

we know that

the area of the circle is equal to

$A=\pi r^{2}$

where

r is the radius of the circle

in this problem we have

$Diameter=21.2\ cm\\ r=Diameter/2\\r=21.2/2\\r= 10.6\ cm$

<u>Find the area of the circle</u>

$A=\pi r^{2}$

$A=\pi*10.6^{2}$

$A=352.8104\ cm^{2}$

<u>Find the area of the sector</u>

we know that the area of the circle represent a sector of $2\pi$ radians

by proportion

$\frac{352.8104}{2\pi }=\frac{x}{(3\pi/5)} \\\\x*2\pi=(3\pi*352.8104)/5\\ \\x= 105.84\ cm^{2}$

therefore

<u>the answer part 2) is</u>

the area of the sector is

$105.84\ cm^{2}$

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3 years ago

What is 0.31 written as a percent?

aalyn [17]

It is 31%.

To explain, you have to just have to multiply 0.31 by 100, and then add a percentage sign.

7 0

3 years ago

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Mr Harrison is 9 months old. How old is Mr Harrison daughter in days

Reil [10]

Answer:

273.75 days

Step-by-step explanation:

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2 years ago