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Stolb23 [73]
3 years ago
11

Which function is shown in the graph?

Mathematics
1 answer:
trasher [3.6K]3 years ago
4 0

Answer:

exponential growth function

Step-by-step explanation:

the line of the graph goes upward

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A circular mirror has a circumference of 30 pi inches. What is the area of mirror?
Aleonysh [2.5K]

Answer:

Step-by-step explanation:

circumference = 2πr

2πr = 30π inches

r=\frac{30\pi}{2\pi}=15in

Area = πr² = π*15*15 = 225π square inches

6 0
3 years ago
80% of what number is 20
Olin [163]

the answer is 16 because .80 times 20 is 16

7 0
3 years ago
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The function f(x)=125(0.9)x models the population of a species of fly in millions after x years.
deff fn [24]

Answer: (B) 3 times as fast

<u>Step-by-step explanation:</u>

rate of change is the "slope" between the given interval.

f(x) = 125(.9)ˣ

f(1) = 125(.9)¹

    = 112.5

f(5) = 125(.9)⁵

     = 73.8

\dfrac{f(5) - f(1)}{5 - 1} = \dfrac{73.8-112.5}{5-1} = -\dfrac{38.7}{4} = -9.675

********************

f(11) = 125(.9)¹¹

       = 39.2

f(15) = 125(.9)¹⁵

       = 25.7

\dfrac{f(15) - f(11)}{15 - 11} = \dfrac{39.2-25.7}{15-11} = -\dfrac{13.5}{4} = -3.375

********************

The rate of change from years 1 to 5 is approximately 3 times the rate of change from years 11 to 15.

7 0
3 years ago
The sprocket on the crankshaft of an engine power the camshaft by a chain assembly. If the engine crankshaft is turning 3250 rev
Lera25 [3.4K]

Answer:

  • 30,631 inches
  • 2553 feet

Step-by-step explanation:

The length of one revolution of the sprocket is ...

  C = 2πr = 2π(1.5 in) = 3π in

Then the length of 3250 revolutions is ...

  3250(3π in) = 30,630.53 in

About 30,631 inches of chain travel past the sprocket in one minute.

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There are 12 inches in a foot, so the number of feet is ...

  30,630.53 in/(12 in/ft) = 2552.54 ft

About 2553 feet of chain travel past in one minute.

8 0
3 years ago
Amy is growing basil. On February 1st her plant was 5 inches high. A week later, the plant’s height became 9 inches high. By wha
vladimir1956 [14]
(9-5/5)*100= (4/5)*100 = 80% ( new height- original height /original height )  *100 the plant grew 80%
4 0
3 years ago
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