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3 years ago

12

What are the input variable and the output variable?

1 answer:

Citrus2011 [14]3 years ago

3 0

<span>The input variable is the number of rowers in a rowboat and the output variable is the speed of the rowboat. When you input the number of rowers into an equation, you should be able to find out how fast the rowboat is going. The speed of the rowboat is directly proportional to the number of rowers.</span>

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Which pair of numbers does 72 fall between

Svetach [21]

The pair of numbers that fall between 72 are 71 and 73.

4 0

3 years ago

The height of a toy rocket that is shot in the air with an upward velocity of 48 feet per second can be modeled by the function

NikAS [45]

Answer:

maximum height reached = 35 feet

and $f(t) = 48t-16.07t^{2}$

Step-by-step explanation:

writing linear motion equations

$s = ut + \frac{1}{2}at^{2}$

where s is the total displacement, u the initial velocity, t the time travelled, and a is the acceleration.

given u = 48 ft/s, and a = acceleration due to gravity g = -9.8 $\frac{m}{s^{2}}$

1 m = 3.28 feet therefore g becomes -9.8×3.28 $\frac{ft}{s^{2}}$

here negative sigh comes as acceleration due to gravity is in opposite direction of initial velocity.

therefore f(t) becomes $f(t) = 48t-16.07t^{2}$

to find max height we should find differentiation of f(t) and equate it to 0

therefore we get 48 = 32.144t

t = 1.49 s

therefore max height f(1.49) = 71.67-36.67 = 35 feet

4 0

3 years ago

Read 2 more answers

Emily bought 4 cheeseburgers for $6 each and then spent $18 on a new shirt. She paid for the cheeseburgers and shirt with her de

Soloha48 [4]

-42 would be the answer

8 0

3 years ago

Read 2 more answers

PLEASE help this is timed!!!!

baherus [9]

Answer:

The answer is that last one.

Step-by-step explanation:

3 0

3 years ago

Please find the answer

Serggg [28]

Answer:

x^3 + 1/x^3 = 488

Step-by-step explanation:

x^2 + 1/x^2 = 62
x^2 + 1/x^2 + 2 = 64
( adding 2 in both sides )
(x + 1/x ) ^2 = 64
x + 1/x = 8

now,

( x+ 1/x ) ^ 3 = 512
x^3 + 1/x^3 + 3 × x × 1/x ( x + 1/x )
x^3 + 1/x^3 + 3 ( 8 )
( since x + 1/x = 8 )
x^3 + 1/x^3 + 24 = 512
x^3 + 1/x^3 = 488

hence, we got x^3 + 1/x^3 = 488

8 0

3 years ago