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3 years ago

15 points, please help me out

Mathematics

1 answer:

Harrizon [31]3 years ago

8 0

Answer 3,5,7

Step-by-step explanation:

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11 pt equals how many fl oz

Dmitriy789 [7]

11 pints equal 176 fluid ounces

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3 years ago

Read 2 more answers

Evaluate the following expression for y = - 2. - 3 y

bekas [8.4K]

Answer:

-1/8

Step-by-step explanation:

The given expression is y⁻³

We want to find the value of the expression when y = -2

Thus;

At y = -2, we have; -2⁻³

According to law of exponents, x⁻⁴ = 1/x⁴

Thus; -2⁻³ = -1/2³ = -1/8

4 0

2 years ago

The height (feet) of an object moving vertically is given by s= (-16t^2)+(208t)+(156), where t is in seconds.

OverLord2011 [107]

Answer:

The object's velocity at t = 7 is -16 ft/s

The maximum height is 832 ft and it occurs when $t=\frac{13}{2}$

Step-by-step explanation:

From the information given, the equation of motion of the object is

$s(t)= -16t^2+208t+156$

For any equation of motion s(t), the instantaneous velocity at time t is given by

$v(t)=\frac{ds}{dt}$

(a) To find the object's velocity at t = 7, you must:

$v(t)=\frac{d}{dt}(-16t^2+208t+156)\\\\v(t)=-\frac{d}{dt}\left(16t^2\right)+\frac{d}{dt}\left(208t\right)+\frac{d}{dt}\left(156\right)\\\\v(t)=-32t+208+0\\\\v(t)=-32t+208$

Next, we evaluate when t = 7

$v(7)=-32(7)+208=-224+208\\\\v(7)=-16$

The object's velocity at t = 7 is -16 ft/s

(b) To find the maximum of a function we always use the derivative of the function and we set it equal zero to find the critical points.

To find the maximum height and when it occurs, we set the velocity function equal to 0 and solve for t.

$-32t+208=0\\\\-32t+208-208=0-208\\\\-32t=-208\\\\\frac{-32t}{-32}=\frac{-208}{-32}\\\\t=\frac{13}{2}$

Next, we substitute this value into the equation of motion to find the maximum height

$s(\frac{13}{2})= -16(\frac{13}{2})^2+208(\frac{13}{2})+156\\\\s(\frac{13}{2})=-676+1352+156)=832$

The maximum height is 832 ft and it occurs when $t=\frac{13}{2}$

6 0

3 years ago

Which of the following is NOT a function?

joja [24]

Answer:

c

Step-by-step explanation:

6 0

3 years ago

i jave a 5 in my ones place. the digit in my tens place os 3 plus the digit in my ones place. the digit in my hundreds place is

KatRina [158]

Answer:

The number is 385.

Step-by-step explanation:

The 5 is in the ones place so you put that at the end. The digit in the tens place is 3 plus the digit in the ones place which is 5 so 3 + 5 = 8 so the 8 is in the tens place. The digit in the hundreds place is 2 less than the digit in the ones place which is 5 so 5 - 2 = 3 so the 3 is in the hundreds place

4 0

3 years ago