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3 years ago

PLEASE HELP!!!

Mathematics

1 answer:

Ulleksa [173]3 years ago

7 0

Answer:

135 meters/90 seconds

Step-by-step explanation:

Kathy swims 45 meters in 30 seconds. Divide 90 with 30:

90 seconds/30 seconds = 3 seconds/1 seconds.

Multiply 45 meters with 3 to get the amount she swam in 90 seconds:

45 x 3 = 135

135 meters is your answer.

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Find the average rate of change of f(x) = 4x² – 3 from 3 to 9.

Lina20 [59]

Answer:

Step-by-step explanation:

Given:

$f(x) = 4x^2 - 3$

Required:

Average range of change from 3 to 9

SOLUTION:

Step 1:

Find f(3) and f(9):

To find f(3), replace x with 3 in the given function

$f(3) = 4(3)^2 - 3$

$f(3) = 4(9) - 3$

$f(3) = 36 - 3$

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To find f(9), replace x with 9 in the given function

$f(9) = 4(9)^2 - 3$

$f(9) = 4(81) - 3$

$f(9) = 324 - 3$

$f(9) = 321$

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Where,

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Plug in the values into the formula for average rate of change.

$= \frac{321 - 33}{9 - 3}$

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2 years ago

PLEASE HELP!!!!!!!!!!!!!!

Triss [41]

Answer:

The Correct Answer is 30 if your finding the Area of the triangle prism

Step-by-step explanation:

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