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3 years ago

Evaluate the expression for r = 2 and t = 7. 3(r2 + t) - r2

1 answer:

5 0

We are asked to evaluate the given expression 3 (r² + t) - r² given that r is equivalent to 2 and t is equivalent to 7. The solution to this problem is shown below:
3 (r² + t) - r² , substitute r=2 and t=7 in the expression
3 (2² + 7) - 2² , perform squared
3 (4+7) -4, perform addition of 4 and 7
3 (11) -4, perform multiplication os 3 and 11
33 - 4, perform subtraction
29

The answer is 29.

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A ball is thrown into the air with an upward velocity of 24 ft/s. Its height h in feet after t seconds is given by the function

inysia [295]

Answer:

Step-by-step explanation:

Since you have this categorized under college math, I'm going to go out on a limb here and assume you're in calculus. We will solve using the position function and its first derivative (velocity) to solve. Remember that at an object's max height, the velocity is 0.

If the position function is

$s(t)=-16t^2+24t+7$ the first derivative, velocity, is

v(t) = -32t + 24. Set this equal to 0 to find the time when the object is at its max height:

0 = -32t + 24 and

-24 = -32t so

t = .75 seconds. Now we can plug that time into the position function to find where it is at that time. This "where" will be the max height:

s(.75) = $-16(.75)^2+24(.75)+7$ so

s(.75) = 16 feet

7 0

3 years ago

How do I find the area when given the circumference?

Ghella [55]

Im not sure if this is the answer due to how you asked your question

but if you want to know the circumference to that circle the answer is
A~ 0.096
hope this is right :)

7 0

3 years ago

The sun of three consecutive integers is 60 find the integers

prohojiy [21]

Answer:

let the three consecutive Integers be

x , x+1 , x+2

their sum is 60,

so,

x + x + 1 + x + 2 = 60

→ 3x + 3 = 60

→ 3x = 60 - 3 = 57

→ x = 57/3 = 19

therefore, 1st integer = 19

2nd integer = x + 1 = 19 + 1 = 20

3rd integer = x + 2 = 19 + 2 = 21

so,

the three consecutive Integers are 19 , 20 and 21.

hope this answer helps you dear... take care and may u have a great day ahead!

3 0

3 years ago

Plz help I am stuck on this one

Katyanochek1 [597]

There are 8 fluid ounces in each cup.

The equation is m=(4×8)÷4.

The answer is D.

4 0

4 years ago

A 14.5 gallon gasoline tank is 3/4 full. How many gallons will it take to fill the tank?

il63 [147K]

1/4x14.5=3.625 gallons

6 0

3 years ago