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3 years ago

The diameter of a circle is 18 meters. What is the circle's area?

Mathematics

1 answer:

Anarel [89]3 years ago

3 0

Answer:

254.45 meters squared

Step-by-step explanation:

Well the radius is 9 and that squared is 81 then that times pi is 254.45.

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Can you find x I don’t know how.

kodGreya [7K]

Answer:

Step-by-step explanation:

(x+3)/(x+8) = 2/3

3x + 9 = 2x + 16

x = 7

8 0

2 years ago

Which of the following are solutions to the equation below?

scoundrel [369]

Answer:

The correct options for the solution values are:

$x=2\sqrt{2}-5$

$x=-2\sqrt{2}-5$

Step-by-step explanation:

Given the expression

$x^2+10x+25=8$

Subtract 25 from both sides

$x^2+10x+25-25=8-25$

Simplify

$x^2+10x=-17$

Add 25 or 5² to both sides

$x^2+10x+5^2=8$

$x^2+10x+5^2=\left(x+5\right)^2$

so the expression becomes

$\left(x+5\right)^2=8$

$\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}$

solve

$x+5=\sqrt{8}$

Subtract 5 from both sides

$x+5-5=2\sqrt{2}-5$

$x=2\sqrt{2}-5$

solve

$x+5=-\sqrt{8}$

Subtract 5 from both sides

$x+5-5=-2\sqrt{2}-5$

$x=-2\sqrt{2}-5$

Therefore, the solution to the equation

$x=2\sqrt{2}-5,\:x=-2\sqrt{2}-5$

Hence, the correct options for the solution values are:

$x=2\sqrt{2}-5$

$x=-2\sqrt{2}-5$

6 0

2 years ago

What is the value of <img src="https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B1331%7D" id="TexFormula1" title="\sqrt[3]{1331}" alt="\s

Umnica [9.8K]

Answer:im not sure i wish i can help but goodluck

Step-by-step explanation:

7 0

2 years ago

What goes into -4 and 3

densk [106]

Uhh -1?
What’s the question?…

6 0

2 years ago

a bag contains 42 red, 45 green, 20 yellow, and 32 purple candies. you pick one candy at random. fin the probability that it is

AlexFokin [52]

42+45+20+32= 139

139/ 32 = 4.3% purple

5 0

2 years ago