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Lilit [14]
3 years ago
13

1. If y varies inversely as x and x = 2 when y = 8, find x when y= 5.

Mathematics
1 answer:
Hitman42 [59]3 years ago
3 0

Answer:

16/5

Step-by-step explanation:

Since y varies inversely as x,  then xy = k  

                                                          2(8) = 16 = k

Therefore, xy = 16

Now,  5x = 16

x = 16/5

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on a lake, Carol rowed a boat for 1/8 mile. Then luke rowed the boat for 3/8 mile. how far did carol and like row in all? simpli
Semmy [17]

Answer:

Total = \frac{1}{2}

Step-by-step explanation:

Given

Carol = \frac{1}{8}

Luke = \frac{3}{8}

Required

How far did they row together

To do this, we simply add the distance they both covered.

Total = Carol + Luke

This gives;

Total = \frac{1}{8} + \frac{3}{8}

Take LCM

Total = \frac{1+3}{8}

Total = \frac{4}{8}

Simplify

Total = \frac{1}{2}

<em>Hence, they both rowed 1/2 mile</em>

7 0
3 years ago
ASAP! A biologist is to set up an aquarium in his laboratory. He intends to buy 11 piranhas and 5 sharks. He has a budget of £20
Mars2501 [29]

Answer:

p = (200 -5s)/11

Step-by-step explanation:

I think you meant p is the price of piranhas, and a is the price of one shark.

You have:

11p + 5s = 200

11p = 200 - 5s

p = (200-5s)/11

Does that help? ;)

8 0
3 years ago
PLEASE HELP WILL FOLLOW,5STAR AND BRAINIEST IF CORRECT
tensa zangetsu [6.8K]

Use trigonometry here.

sinx = opposite side/ Hypotenuse

so, sinx = 4/5 = 0.8

x= sin^-1(0.8) which is 53.13

Hope it helps

7 0
3 years ago
Help! ASAP!
Goshia [24]

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Answer:

  A- Cai are used an invalid reason to justify the congruence of a pair of sides or angles.

Step-by-step explanation:

In step 4, Cai referred to the angles as "alternate interior." In fact, they are "corresponding." The reason used to justify congruence of the angles was invalid.

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2 years ago
The formula below is used to convert a temperature in degrees Celsius c to a temperature in degrees Fahrenheit f : f=1.8c+32 the
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