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gtnhenbr [62]
2 years ago
9

The radius of a circle is 9 kilometers. What is the circle's area?

Mathematics
1 answer:
krek1111 [17]2 years ago
8 0

A=π r²=π×9²≈254.469km²

r radius is 9km

I hope it helped!!!

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Is 4/5 equal to 5/10?
vfiekz [6]
No, 4/5 does not equal to 5/10.

Because:- When you try to see if it is proportional, it does not equal it.

4/5 ≠ 5/10

Simplify to make sure.

4/5 ≠ 1/2

4/5 is NOT equal to 1/2.

Therefore, our final answer is that 4/5 does not equal 5/10.
4 0
3 years ago
Read 2 more answers
If 3x - y = 3 and -x + y = 3 then xy=___?
mamaluj [8]

First find x and y.

Solve system of equations by elimination.

  3x-y=3

+(-x+y=3)

---------------

2x=6

x=3

Now plug in x into one of the equations to find y.

-3+y=3

y=6

xy=3x6=18

5 0
3 years ago
Riley makes a mistake in step 2 while doing her homework. what was her mistake? startfraction x over x squared minus 5 x 6 endfr
maw [93]

The mathematical mistake that Riley made is that:
"She used the wrong common denominator." (Option A)

<h3>What is a Common Denominator?</h3>

A common denominator is a factor that is similar to all the fractions in the sequence of equations.

Hence the correct answer is:

(2(2x² - 6x + 9))/((x-3) (x-2) (x+3))

See the correct sequence of steps below:

Step One - the Expression is given as:

(x/(x-3)(x-2)) + (3/(x+3))

Step 2 - Find the common denominator and rewrite the expression so that the numerators are above the common denominators.

Hence we have:  (x (x+3) + 3(x-3) (x-2))/(x-3)(x-2)(x+3)

Step 3  Apply the Law of Multiplicative Distribution:

Hence we have  (x² +3x+3x²-9x-6x+16)/(x-3)(x-2)(x+3)

Step 4 -  Collect Like Items

This gives us: (x²+3x²)+(3x-9x-6x)+18/(x-3)(x-2)(x+3)

Step 5 Sort for like coefficients

This gives us:  ((1+3)x² +(3-9-6) * x + 18)/(x-3)(x-2)(x+3)

Step 6 -  check for the sum or difference

This gives us: (4x²+(3-9-6) * x+ 18)/(x-3)(x-2)(x+3)

We simplify and factor the expression to get

(2(2x²-6x+6)/(x-3)(x-2)(x+3).

See the attached for full question.

Learn more about Common Denominators at:

brainly.com/question/542317

4 0
2 years ago
Mark wrote the highest score he made on his new video game as the product of 70x6,000. Use the associative and commutative prope
Lelu [443]
You need a caculater that is what you need tho

5 0
2 years ago
Read 2 more answers
The measure of an angle is 12° less than twice the measure of its supplement. What is the measure of the angle?
kupik [55]
Here is the equation you should use: x + 2x - 12 = 180    
You will be solving for x. 

Combine like terms then add twelve to both sides of the equation.

3x = 192

Divide by 3 on both sides of the equation. 

x = 64

Now, plug 64 in the equation for x. 

2(64) - 12 = 116
8 0
2 years ago
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