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Varvara68 [4.7K]
3 years ago
11

Jackson School's spelling bee started at

Mathematics
1 answer:
irina [24]3 years ago
7 0

Answer:

The answer is A) 1 hour and 10 minutes

Step-by-step explanation:

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The radius of a sphere is increasing at a rate of 5 mm/s. How fast is the volume increasing (in mm3/s) when the diameter is 40 m
jeka94

9514 1404 393

Answer:

  8000π mm^3/s ≈ 25,133 mm^3/s

Step-by-step explanation:

The rate of change of volume is found by differentiating the volume formula with respect to time.

  V = 4/3πr^3

  V' = 4πr^2·r'

For the given numbers, this is ...

  V' = 4π(20 mm)^2·(5 mm/s) = 8000π mm^3/s ≈ 25,133 mm^3/s

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<em>Additional comment</em>

By comparing the derivative to the area formula for a sphere, you see that the rate of change of volume is the product of the area and the rate of change of radius. This sort of relationship will be seen for a number of different shapes.

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3 years ago
0.62 as a percent <br> (STEP BY STEP)
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Answer:

0.62 = 0.62 × 100/100 = (0.62 × 100)/100 = 62/100 = 62%;

In other words:

1) Multiply that number by 100.

2) Add the percent sign % to it.

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2 years ago
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Multiply. Write your answer as a fraction in the simplest form.<br> (−1 2/3)^3
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Answer:

Fraction Calculator

Add Fractions, Subtract Fractions, Multiply Fractions, or Divide Fractions and get an answer in the simplest form with this Online Fraction Calculator.

FRACTION CALCULATOR

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(+, -, x, ÷)

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Add Fractions

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Multiply Fractions

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Step-by-step explanation:

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What is the answer to x2+4x +3 =0?
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(x+1) (x+3)
the zeroes of the function are negative 1 and negative 3
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The answer should look like this. (___,___) plzzz fast. ​
BartSMP [9]

Answer:

( -1, 15/2) or ( -1, 7 1/2)

Step-by-step explanation:

Formula: ( (x1 + x2)/2, (y1 + y2)/2 )

1. ( (-4 +6)/2, (8 + 7)/2 ) Plug in

2. ( -2/2, 15/2) Add/Subtract

3. ( -1, 15/2) or ( -1, 7 1/2) Divide

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3 years ago
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