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Sphinxa [80]
3 years ago
12

The variable x varies directly as y and x varies inversely as z. What is the value is y when x=20 and z=-2, if y=30 when z=3 and

x=5?
Mathematics
1 answer:
miv72 [106K]3 years ago
7 0

Answer:

Y=-80

Step-by-step explanation:

X=Ky/z

5=30k/3

30k=15

K=1/2

20=Ky/(-2)

Ky =-40

1/2y=-40

Y=-80

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Step-by-step explanation:

8 0
2 years ago
What is 7/8 divided by 1/8
eduard

Answer:

7

Step-by-step explanation:

<u>Concepts:</u>

  • Division: a system of distributing a collection of things into equal parts
  • Fractions: #s that represent a part of a whole
  • Dividing Fractions: dividing a fraction by another fraction = multiplying the fraction by the inverse (reciprocal) of the other one
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<u>Solving:</u>

1. First, let's set up the equation:

7/8 ÷ 1/8

2. We can get the reciprocal of 1/8 by doing the opposite of division; multiplication. 1/8 becomes 1 · 8, and that's equal to 8.

3. Now, since we know dividing a fraction by another one is exactly the same as multiplying the fraction by the reciprocal of the other, let's multiply 7/8 by the inverse of 1/8, which is 8.

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Therefore, 7/8 divided by 1/8 is equal to <u>7</u>.

8 0
3 years ago
After how many years will £6,000.00 yield a simple interest of £900.00 at 3%​
PilotLPTM [1.2K]

Answer:

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7 0
3 years ago
Read 2 more answers
Thank you to whoever helps &lt;3
Igoryamba
Np and the answer is B.35 because you are not supposed multiply your are supposed add for an example 20 + 15 = 35 and if you multiply which you are not supposed to you would get 300 but that wouldn’t be the right answer cuz 300 is not one of the choices so you answer would be B)35

Hope that helped you out oh and can you give me the brainliest
4 0
3 years ago
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