Please help i need help

1)The base of a triangular prism is a right triangle with a base of 20 feet and a height of 120 inches. The height of the prism

ivanzaharov [21]

Answer:

(1)750 cubic feet

(2)8 Times

Step-by-step explanation:

<u>Question 1</u>

<u>Dimensions of the Right Triangular Base</u>

Base = 20 feet
Height= 120 inches = 10 feet

Base Area of the Prism

$=\dfrac12 \times 20 \times 10\\=150$ square feet$

Height of the Prism = 5 feet

Volume of the Prism = Base Area X Height

= 150 X 5

=750 cubic feet

<u>Question 2</u>

Length: 12 inches
Width: 4 inches
Height: 8 inches

Volume = 12 X 4 X 8 =384 cubic inches

<u>Havana's box</u>

Havana has a shipping box similar to Jake's box, but each dimension is half as long.

Therefore:

Length: 12/2=6 inches
Width: 4/2=2 inches
Height: 8/2=4 inches

Volume = 6 X 2 X 4 =48 cubic inches

Now:

384/48=8

Therefore, the volume of Jake's box is 8 times larger than Havana's box.

6 0

4 years ago

A boy weighing blank kilograms is riding a skateboard. He’s moving at 2 meters/second and has 40 joules of kinetic energy. He do

Ira Lisetskai [31]

Answer:

His kinetic energy at the faster speed is 160 J

Step-by-step explanation:

Here in this question, we are interested in calculating the kinetic energy at the faster speed.

Firstly, we need to know the mass of the boy’s body. We can do this by using the kinetic energy formula;

Mathematically;

K.E = 1/2 * m * v^2

From the question;

K.E = 40 Joules

m = ?

v = speed = 2 m/s

Now, plugging these values into the kinetic energy equation, we have;

40 = 1/2 * m * 2^2

40 = 1/2 * m * 4

40 = 4m/2

4m = 40 * 2

4m = 80

m = 80/4

m = 20 kg

Now that we know the mass of the boy’s body, we can proceed to calculate the new K.E

Let’s follow the third statement in the question;

We were told that he doubles his speed upon sighting his friend.

Recall, he was traveling at a speed of 2 m/s.

Now doubling this means the new speed will

be 2 * 2 = 4 m/s

Now, we want to calculate the kinetic energy value at this new speed.

Mathematically, we use the same formula for kinetic energy.

K.E = 1/2 * m * v^2

We know that m is the mass that we calculated as 20kg and our v here is 4 m/s

Plugging these values, we have;

K.E = 1/2 * 20 * 4^2

K.E = (20 * 16)/2

K.E = 320/2

K.E = 160 J

6 0

3 years ago

Read 2 more answers

ANGLE OF ELEVATION, ANGLE OF DEPRESSION

Gekata [30.6K]

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \large \mathfrak{Together \: We \: Go \: Far}$

$\rule{70mm}{2.9pt}$

<h3>ANGLE OF ELEVATION</h3>

☞ An angle of elevation is the angle between the horizontal line of sight of the observer to the object above.

<h3>ANGLE OF DEPRESSION</h3>

☞ An angle of depression is the angle between the horizontal line of sight of the observer to the object below.

$- - - - - - - - - - - - - \: -$

Additional Information:-

☞ brainly.com/question/9817377

☞ brainly.com/question/21137209

$\rule{70mm}{2.9pt}$

~ $\large \mathfrak{MrHarold}$

3 0

2 years ago

Please help <br> -3.7n = -22.2

nevsk [136]

Answer:

n=-22.2/-3.7 { - and - will cancel}

so n=22.2/3.7

therefore n=6

5 0

3 years ago

Which rule matches the function graphed in the image?

Roman55 [17]

How do you find the correct equation? Follow these steps.

First, plug 0 in for X and solve for Y . Does the y value match what is on the graph? 0 in this case?

a. 0 = -2(0) True - This could be an answer
b. 0 = 0 + 4 False - This cannot be an answer
c. 0 = 2(0) True - This could be an answer
d. 0 = 0 - 4 False - This cannot be an answer

Now we are down to 2 possible answers A and C. Now take another point on the line, say x=-2 and repeat, does the answer match what is on the graph? (4).

a. 4 = -2(-2) True
c. 4 = 2(-2) False

As only A matches, A must be the answer. With graphing problems, when you have to find the correct equation, always choose X=0 as the first point (assuming it has a Y value) and eliminate answers. I hope this helps.

5 0

4 years ago