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fiasKO [112]
3 years ago
15

Tim and Jim are working on a school project together. If he had to work by himself, it would take

Mathematics
1 answer:
Vladimir [108]3 years ago
4 0

Answer: 6 hours

Step-by-step explanation:

Given, Tim and Jim are working on a school project together.

Tim takes 10 hours to complete the school project.

If Jim worked alone, it would take him 15 hours

Let t be the time they both take if they work together.

Then, \dfrac{1}{t}=\dfrac{1}{\text{Time taken by Tim}}+\dfrac{1}{\text{Time taken by jim}}

\Rightarrow\ \dfrac{1}{t}=\dfrac{1}{10}+\dfrac{1}{15}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{3+2}{30}=\dfrac{5}{30}\\\\\Rightarrow\dfrac{1}{t}=\dfrac{1}{6}\\\\\Rightarrow t=6

So, it will take<u> 6 hours</u> to complete the school project together .

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love history [14]

Answer:

  B.  $450

Step-by-step explanation:

The amount of commission is the commission rate (3%) times the amount of sales to which it is applied ($5000). Garrett's commission last week would be ...

  0.03 × $5000 = $150

He is also paid $300 each week in addition to his commission, so his total pay last week was ...

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4 0
2 years ago
What is the product of the polynomial (7x+7) (x+2)
kolbaska11 [484]

Answer: 7x^2+21x+14

Step-by-step explanation:

(7x+7)(x+2)

Multiply each term in the first parentheses by each term in the second parentheses (FOIL)

7x×x+7x×2+7x+7×2

↘ ↙

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7x^2+7x×2+7x+7×2

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7×2 multiply numbers

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3 0
3 years ago
Explain how to find an estimate for the quotient 3.4 ÷ 6
vovikov84 [41]
To estimate this we can do it like this:-
<span>
Way #1

3.4 = 3
6 = 6 

3 </span>÷ 6 = <span>0.5

So, to estimate 3.4 </span>÷ 6 we round 3.4 to the nearest whole number and den divide. Den d answer is our estimated answer!

3.4 ÷ 6 = 0.5

Hope I helped ya!! 
3 0
3 years ago
Read 2 more answers
Help please !!!!!!!!!!!!!!
DIA [1.3K]

The LCM will be the values that are common to both factors. From the given values the LCM will be 2² * 3² * 5

<h3>Least common multiple</h3>

LCM is the lowest number that can divide all other numbers given in an  expression.

Given the prime factorizations 2² * 3² * 5 and 2*3*5. The LCM will be the values that are common to both factors.

From the given values the LCM will be 2² * 3² * 5

Learn more on LCM here: brainly.com/question/233244

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2 years ago
How do I factorise out the negative?
SCORPION-xisa [38]
I think the anser is c that what i think
3 0
3 years ago
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