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bearhunter [10]
3 years ago
9

How does the area of a circle change if the radius is multiplied by a factor of n, where n is a whole number?

Mathematics
1 answer:
Fantom [35]3 years ago
6 0
Increases but is that what you are asking?
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A scientist is growing bacteria in a lab for study. One particular type of bacteria grows at a rate of y=2t^2+3t+500. A differen
Leya [2.2K]

ANSWER

Approximately after 15 minutes.

EXPLANATION

The growth rate of the first bacteria is

y = 2 {t}^{2}   + 3t + 500

The growth rate of the first bacteria :

y = 3 {t}^{2}  + t + 300

To find the time that, there will be an equal number of bacteria, we equate the two equation;

3 {t}^{2}  + t + 300 = 2 {t}^{2}   + 3t + 500

3 {t}^{2}  - 2 {t}^{2}   + t  - 3t +  300 - 500 =00

{t}^{2}  - 2t  - 200= 0

We solve for t to get,

t = 15.177

Or

t =  - 13.177

We discard the negative value.

This implies that,

t \approx15

8 0
3 years ago
.......Evaluate | 7 | = ?
Serhud [2]

Answer:

7

Step-by-step explanation:

absolute value of 7 is 7

7 0
3 years ago
Scale each ratio or rate up or down to determine the unknown term
balu736 [363]
D) 1•x=5, 1•5=5 8•5=40, the answer is 40/5 CDs

E) 3/3=1, 26.25/3= 8.75. The answer is 1/8.75

F) 10/10=1, 120/10= 12. The answer is 1/12

G) 2•x=12, 2•6=12, 120•6= 720. The answer is 12/720

Hopefully this helped
5 0
2 years ago
Square root of 20<br> O Between 5 and 6<br> O Between 4 and 5<br> O Between 3 and 4<br> 0 4
marta [7]

Answer:

B. It is between 4 and 5

Step-by-step explanation:

When you square 4 you get 16. Do the same to 5 and you get 25.

7 0
2 years ago
Need help 4 1/5,-0.22,-1.4,1.4
Sholpan [36]
G wbjsejrjrjguriirriririeieieirjriejer
8 0
2 years ago
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