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3 years ago

3 pts

Mathematics

1 answer:

Assoli18 [71]3 years ago

6 0

Do you go to west greene

Step-by-step explanation:

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The radius of a CD is 6cm which equation could be used to find the circumference of the CD in cm ?

9966 [12]

Answer:

2πr

Step-by-step explanation:

to find the circumference you must multiply the radius by pi and 2

5 0

2 years ago

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Suppose f"(x) = -9 sin(3x) and f'(0) = -4, and f(0) = -2<br> Find f(pi/4)

grigory [225]

Answer:

9sin (3)and f,(0)=4,AND f(0)=2

5 0

3 years ago

2x = 4y + 8, x - 2y = 4

Evgen [1.6K]

Answer: x = 8, y = 2, coordinates (8,2)

Step-by-step explanation:

2x = 4y + 8 (divide by 2 to get value of x)

x = 2y + 4

(now substitute x into the second equation to find value of y)

2y + 4 - 2y = 4

2y - 2y = 4 - 4 (divide by 2 to get value of y)

y - y = 2 - 2

y = 2

Now plug in value of "y" to get value of "x".

x - 2(2) = 4

x - 4 = 4

x = 8

Coordinates (8,2)

3 0

2 years ago

You usually buy a 16.5-ounce bottle of shampoo. There is a new bottle that says it gives you 30% more free.

Katarina [22]

Answer:

$\frac{x-16.5}{16.5}=0.30$

Hopefully, this is your desired setup. (I noticed the formula you have to fill in there.)

Have a good day.

Step-by-step explanation:

Hi.

You could use the percent change formula.

Since we know it is a percent increase then we will do new-old instead of old-new:

$\frac{\text{new}-\text{old}}{\old}$

x is the new amount of shampoo.

16.5 is the original amount (old) of shampoo.

The percent increase is 30%=0.30 .

So we have the following equation:

$\frac{x-16.5}{16.5}=0.30$

We could have found the equation like this:

$16.5+16.5(0.30)=x$

Subtract 16.5 on both sides:

$16.5(0.30)=x-16.5$

Divide both sides by 16.5:

$0.30=\frac{x-16.5}{16.5}$

By us of symmetric property of equality:

$\frac{x-16.5}{16.5}=0.30$

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3 years ago

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Which of the following best describes the algebraic expression 5(x+2)-3

marin [14]

D. Three less than five times the quantity of a number plus two.

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3 years ago

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