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serg [7]
3 years ago
15

Two bricklayers, Sam and Joe, are working on your house. Sam can complete the work in 5 hours, while Joe can complete the work i

n 3 hours. How many hours does the bricklaying take if they work together? fifteen eighths fifteen ninths six eighths four thirds
Mathematics
2 answers:
Dovator [93]3 years ago
7 0

 Your equation is 1/5 + 1/3 =1/x To solve you have to find the common denominator which is 15 So (1/5)3 and (1/3)5

                                          = 3/15+5/15=8/15

                                                  8/15=1/x now cross multiply

                                                   =15/8

This is the answer I got.

                                                 

                         

            

Lera25 [3.4K]3 years ago
3 0
☺☺☺☺☺☺☺☺☺Can You Explain Why There Are "Fifteen Eights , Fifteen ninths and six eights and four thirds pls or take a picture
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Subtract the following. Write your answer in standard notation . 18-9.2×10^-4
puteri [66]

Answer:1.799908×10^1

Step-by-step explanation:

18-0.00092

=17.99908

In standard form=1.799908×10^1

8 0
3 years ago
how many such tests would it take for the probability of committing at least one type i error to be at least 0.7? (round your an
drek231 [11]

The number of tests that it would take for the probability of committing at least one type I error to be at least 0.7 is 118   .

In the question ,

it is given that ,

the probability of committing at least , type I error is = 0.7

we  have to find the number of tests ,

let the number of test be n ,

the above mentioned situation can be written as

1 - P(no type I error is committed) ≥ P(at least type I error is committed)

which is written as ,

1 - (1 - 0.01)ⁿ ≥ 0.7

-(0.99)ⁿ ≥ 0.7 - 1

(0.99)ⁿ ≤ 0.3

On further simplification ,

we get ,

n ≈ 118 .

Therefore , the number of tests are 118 .

Learn more about Error here

brainly.com/question/17062640

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4 0
1 year ago
Last question for today ✌
miv72 [106K]

Answer:

I think it is D

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
For the functions f and g, find (f o g)(8). f(x) = 17x^2 - 10x, g(x) = 9x - 9
Andreyy89

Hey mate. Here is your answer.

Set up the composite function and evaluate.

g (17x^2 - 10x) = 153x^2 - 90x - 9

Hope this helps.

5 0
3 years ago
Help me please solve this !!!!!​
elixir [45]

Answer:

I couldnt write it on the computer because i wanted to draw other stuff to help you understand so i did it on paper. The photo is below!

Step-by-step explanation:

6 0
3 years ago
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