Rewrite the function by completing the square.

Mathematics

1 answer:

Westkost [7]3 years ago

7 0

Answer:

x =1

x = -2

Step-by-step explanation:

I hope it helps

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Find the radius of this circle. A = ar2 r = [?] ft A = 9aft?

Sergeu [11.5K]

Answer:

A = $\pi$ . r^2

If A = 9 $\pi$ ft^2

$\pi$ . r^2 = 9 $\pi$ ft^2

r^2 = 9ft^2

r = sqrt(9ft^2)

r = 3ft ( r>0)

Step-by-step explanation:

6 0

2 years ago

What process do you use to find the percent change of a quantity?

Sever21 [200]

First, we need to get the amount of change:
The amount of change can either be an increase or a decrease.
It can be calculated as follows:
amount of change = $\frac{"new"value - "old"value}{"old" value}$

If the amount of change is positive, then it is an increase
If the amount of change is negative, then it is a decrease

Then, we need to convert this amount into a percentage:
Changing the amount into a percentage can simply be done by multiplying this amount by 100
This means that:
% of change = amount of change * 100

Combining the two steps:
% of change = $\frac{"new"value - "old"value}{"old" value}$ * 100

Examples:
The original price of a certain product was $10. It then became $12. Find the % of increase.
% of change = $\frac{12-10}{10} * 100$ = 20%
This means that the price increased by 20%

The temperature decreased from 25 degrees to 20 degrees. Find the percentage of decrease.
% of decrease = $\frac{20-25}{25} * 100$ = -20%
This means that the temperature decreased by 20%

Hope this helps :)

7 0

3 years ago

Read 2 more answers

Investors buy a studio apartment for 200,000. Of this amount, they have a down payment of 50,000. Their down payment is what pe

Mashcka [7]

Ummm I think it is 800,00

6 0

3 years ago

Can someone help plz

KIM [24]

I think the answer is B.

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