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egoroff_w [7]
3 years ago
7

Sam wants to install a zip line across a ravine. One side is of the ravine is 45 feet tall while the other side is 65 feet. If t

he ravine is 21 feet wide how long must the zip line be?
Mathematics
1 answer:
Umnica [9.8K]3 years ago
6 0
The difference of the heights is 65-45=20 feet, and the length of the ravine is 21 feet.  By the Pythagorean Theorem, the length of the zipline is sqrt(20^2+21^2)=sqrt(841)=29.
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The wheels on Karen’s rollerblades each have a diameter of 5 cm. How far will the rollerblade travel in one turn of the wheel? U
Ierofanga [76]
To find the distance in one turn of the wheel you have to find the circumference of the wheel.

Circumference = pi x d
= 3.14 x 5
= 15.7 cm

therefore the rollerblade wheel will travel 15.7 cm per rotation

hope this helps! if you did not understand a step or concept please let me know!
8 0
3 years ago
Company A had a loss of $255 in January. Company B had a profit of $162 in January. What was the difference between the profits
Julli [10]

Answer:

The difference of the profit of two companies is $ 417

Step-by-step explanation:

Given as :

The company A loss amount in January = $ 255

The company B profit amount in January = $ 162

Let the difference between there profits = x

So, x = company B profit - ( company A profit)

I.e x = company B profit - ( - company A loss)

Or, x = $ 255 + $162

∴   x = $ 417

Hence The difference of the profit of two companies is $ 417  . Answer

6 0
3 years ago
When x=1/2, what is the value of 8x-3/x
Viefleur [7K]
8x - 3/x

x = 1/2

(8 • 1/2) - 3/0.5

4 - 1.5

2.5
6 0
3 years ago
Simplify the expression: 3(2x2 + 7x + 4) - 8x2 + 15
Softa [21]

Answer:

-2x² + 21x + 27

Step-by-step explanation:

distribute 3 to get:

(6x² + 21x + 12) - 8x² + 15

combine 'like terms' to get:

-2x² + 21x + 27

5 0
3 years ago
Which angel is a right angle (Choose One)(100 Points)
lorasvet [3.4K]

\huge\mathsf\blue{Answer}:-

Hey mate,

Attachment 3 is a right angle because a right angle makes a straight line ( 90 degree angle)

that's why it's a right angle

<h3>plz mark me as brainliest </h3>
7 0
2 years ago
Read 2 more answers
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