All categories

2 years ago

I’ll give brainliest to whomever helps.

Mathematics

1 answer:

Kobotan [32]2 years ago

5 0

Answer:

2x²-60x+84500

Step-by-step explanation:

$=(x-190)^{2} +(x+220)^{2}\\\\=x^{2} -2*x*190+190^{2} +x^{2} +2*x*220+220^{2} \\\\=x^{2} +x^{2} -380x+440x+36100+48400\\\\=2x^{2} -60x+84500$

I think this must be the answer.

You might be interested in

I need help!!!!!!!!!?

ycow [4]

Is it radius or circumference?

5 0

2 years ago

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

a_sh-v [17]

Part 1) 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

the answer part 1) is

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

Part 2) 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

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

Find the area of the circle

$A=\pi r^{2}$

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

$A=352.8104\ cm^{2}$

Find the area of the sector

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

the answer part 2) is

the area of the sector is

$105.84\ cm^{2}$

7 0

3 years ago

What is the smallest positive integer N such that the value 70 + 30(N) is not a prime number?

matrenka [14]

It is 1
70+30*1=100, which is not a prime number

4 0

3 years ago

Mrs. Low has 12 bags, each containing 25 sweets. She divides the sweets among 30 boys equally. How many sweets does each boy get

irakobra [83]

Each boy gets 10 sweets.

12×25=300÷30=10//

6 0

3 years ago

How is dividing decimals different from dividing whole numbers?Please answer immediately.

Masteriza [31]

If you divide decimals you have to bring up the decimal point but if you divide whole numbers you dont have any decimal points so you just divide the numbers. Sorry if i didnt help i just wanted to help.

7 0

3 years ago

Read 2 more answers