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Olenka [21]
3 years ago
7

A number is 1/7 of another number.the difference of the number is 18. find the numbers

Mathematics
1 answer:
LenaWriter [7]3 years ago
6 0
The numbers is 21 & 3
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What is 3=7(4 - 2u)-6u
alisha [4.7K]

Answer:

u = 5/4

Step-by-step explanation:

to evaluate for the value of u we would simply open the bracket and then evaluate for the value of u by collecting the like terms together.

solution

3=7(4 - 2u)-6u

3 = 28- 14u - 6u

collect the like terms

3 + 14u + 6u = 28

20u = 28 - 3

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divide both sides by the coefficient of u which is 20

20u/20 = 25/20

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3 years ago
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A plumber charges an initial fee of $60 and $15 per hour. Write an equation that represents how much the plumber charges, y, if
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Answer:

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Step-by-step explanation:

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3 years ago
Teach me how to add this problem
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A researcher is planning to compare the effects of two different types of lights on the growth of bean plants. She expects that
kicyunya [14]

Answer:

The sample size is  n  = 36

Step-by-step explanation:

From the question we are told that

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=> \alpha = 0.05

So the critical value of  \frac{\alpha }{2} obtained from the normal distribution table is

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3 years ago
If cosθ =1/3 , then sinθ = _____.
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