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Ivanshal [37]
3 years ago
15

X varies directly with y. If x is 16 when y is 20, find x when y is 80.

Mathematics
1 answer:
Taya2010 [7]3 years ago
5 0

Answer:

32

Step-by-step explanation:

16/20 reduces down to 2/5

set 2/5=x/80

cross multiply 160=5x

divide 32=x

check 2/5=32/80

32/80; 16/40; 8/20; 4/10; 2/5

yay 32 is the answer good luck :)

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Solve for x. Round your answer to 2 decimal places.
Gala2k [10]

Answer:

93.99

Step-by-step explanation:

sin rule is:

sin A ÷ a = sin B ÷ b = sin C ÷ c

A B C are angles

a b c are the lengths opposite to each angle

to find angle opposite to x:

180- (90+57) = 33°

180: sum of angles in a traingle

90: since its a right angle traingle

to find x:

sin 57 ÷ 41 = sin 33 ÷ x

rearrange:

x= (sin 33 x 41) ÷ sin 57

x= 93.99 (2 d.p/2 decimal places)

8 0
3 years ago
The cylinders are similar the volume of the larger cylinder is 9648 cubic inches what is the volume of the smaller cylinder
olga nikolaevna [1]
To find the volume of the smaller cylinder you will need to determine the scale factor by comparing the 2 cylinders. The scale factor is 1:2. This means that each dimension will be divided by 2 when going from the larger to the smaller figure.

Because volume is a three dimensional measurement, you need to divide 9648 by 2, three times.

9648/2=4824
4824/2=2412
2412/2=1206 cubic inches

The volume of the smaller container is 1206 cubic inches.
3 0
3 years ago
Read 2 more answers
Simplify 4.51^0 - which is it?<br> 4.51 ?<br> 1 ?<br> 0 ?<br> -1 ?
koban [17]

Answer:

1

Step-by-step explanation:

{(4.51) }^{0}  = 1

hope this helps you.

5 0
3 years ago
(Scientific Notation LC)
vlada-n [284]

Answer:

21,800

Step-by-step explanation:

I'm assuming you meant 2.18 x 10^4

Since the exponent is positive, you will move the decimal point 4 spaces to the right.

5 0
1 year ago
Read 2 more answers
What integer divided by six, less eighteen, is negative twenty-two?
WITCHER [35]
Simplifying what you said in your question would be x/6 - 18 = -22.
Therefore, you can solve the equation by adding 18 to both sides: x/6 = -4
Now, multiply each side by 6: x = -24. Check your answer by substituting -24 into the original equation and you will get -24 = -24
4 0
3 years ago
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