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tekilochka [14]

3 years ago

8

the area of the base of a rectangular prism shown below is 45 square millimeters. The height is 5 1/2 millimeters. what is the v

olume of the prism?

1 answer:

Mamont248 [21]3 years ago

6 0

Okay, your answer would be 247.5mm² hope that helped

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A superhero can fly from New York to Los Angeles in 30 minutes. The distance from New York to Los Angeles is approximately 2,450

kow [346]

<h3>Answer: 4900 mph</h3>

Work Shown:

30 min = 30/60 = 0.5 hours

distance = rate*time

rate = distance/time

rate = (2450 miles)/(0.5 hours)

rate = (2450/0.5) mph

rate = 4900 mph

For the sake of comparison, a typical commercial passenger jet can reach max speeds of about 600 mph.

7 0

2 years ago

Use the law of cosines to find the value of 2*3*4 cos theta.

daser333 [38]

The law of cosines :

A^2 = B^2 + C^2 - 2BC cos A

2^2 = 3^2 + 4^2 - 2 . 3. 4 cos theta

= 21

hope this helps

3 0

3 years ago

Read 2 more answers

What is the product when you multiply (x2 + 2x - 5) and (x + 3) please answer asap

frozen [14]

Is that supposed to be x squared, or x times 2 in the beginning of the first one?

4 0

2 years ago

A culture is grown with a population of 45 million cells. The cell population is found to double every hour. What will the popul

Alexandra [31]

45 million * $2^{4}$ = 45million * 16 = 720million

Or you can use
$y=Ae^{kt}$
A is equal to 45 million
To find the rate, k, we can plug in:
$90million=45million*e^{k*1}
$
$2=e^{k}$
$k=ln(2)$
$y=4.5*10^{7}*e^{t *ln2}$
Knowing that t = 4
$y = 4.5*10^{7}*e^{ln(2)*4}
$
$y = 720 million$

6 0

3 years ago

Read 2 more answers

The time a projectile spends in the air can be modeled by the equation t² -t - 8 = 0, in which t represents the amount of time t

s2008m [1.1K]

Answer:

(t - 4)(t + 2) = 0

Step-by-step explanation:

The general formula for a quadratic expression is

y = ax² + bx + c

Your expression is

y = t² - 2t - 8 = 0

By comparison, we see that

a = 1; b = -2; c = -8

1. Find two numbers that multiply to give ac and add to give b.

In this case, find two numbers that multiply to give -8 and add to give -2.

It helps to list the factors of -8.

They are ±1, ±2, ±4, and ±8

After a little trial and error, you should find the numbers -4 and +2.

-4 × 2 = -8, and -4 + 2 = -2)

2. Rewrite the middle term with those numbers

t² -4t + 2t - 8 = 0

3. Factor the first and last pairs of terms separately

t(t - 4) +2(t - 4) = 0

4. Separate the common factor

The common factor is t - 4.

(t - 4)(t + 2) = 0

8 0

3 years ago