3 years ago

The radius of a circle is 3 centimeters. What is the circle's circumference?

Mathematics

1 answer:

Zielflug [23.3K]3 years ago

5 0

Step-by-step explanation:

The formula for a circumference of a circle is 3.14×diameter

3.14 × (3×2)

3.14×6

18.85

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A sea bird is 28 meters above the surface of the ocean.What is its elevation?

Citrus2011 [14]

Answer:

91.8 ft above sea level

Step-by-step explanation:

Note that 1 meter is approx. 3.28 feet.

Converting 28 meters to feet is accomplished by multiplying 28 m by the conversion factor 3.28 ft / 1 m:

28 m 3.28 ft

-------- * ----------- = 91.8 ft above sea level

1 1 m

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3 years ago

17/26 in simplest form

zzz [600]

since 17 is a prime number and 26 is not a multiple of 17

17/26 is in simplest form

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What is the degree of the polynomial given below?

Ivenika [448]

Answer:

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Step-by-step explanation:

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3 years ago

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A culture started with 3000 bacteria. After 2 hours it grew to 3300 bacteria. Predict how many bacteria will be present after 16

bixtya [17]

Answer:

$6,430\ bacteria$

Step-by-step explanation:

we have a exponential function of the form

$y=a(1+r)^{x}$

where

y is the population of bacteria

a is the initial value

r is the rate of growth

x is the number of hours

we have

a=3,000 bacteria

$y=3,000(1+r)^{x}$

For x=2, y=3,300

substitute

$3,300=3,000(1+r)^{2}$

$(3,300/3,000)=(1+r)^{2}$

Apply square root both sides

$1+r=\sqrt{3.3/3}$

$r=\sqrt{3.3/3}-1$

$r=0.0488$

$r=4.88\%$

substitute in the equation

$y=3,000(1+0.0488)^{x}$

$y=3,000(1.0488)^{x}$

<u><em>Predict how many bacteria will be present after 16 hours</em></u>

For x=16 hours

substitute

$y=3,000(1.0488)^{16}$

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3 years ago

Mx-y when m=2,x=7. And y= 5

Aleks [24]

(2•7)-5
14-5= 9
So the answer is 9

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4 years ago

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