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3 years ago

Which is a solution of the equation x^2=8 A.4 or B.square root of 8?

1 answer:

5 0

Square root of 8 because x^2 or x² needs to be isolated with the square root (since it cancels out the exponent) instead of dividing by 2 to get 4.

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Ms. De Leon wants to produce different sets of test questions for her essay test. If she plans to do this by putting together 3

gladu [14]

The correct answer is b

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2 years ago

Sanjay and Felipe are putting together a 500-piece puzzle. Sanjay could do the entire puzzle by himself in 6 hours, while it wou

Nata [24]

What is the time it takes Sanjay to complete the puzzle? 6 hours

What is the time it takes Felipe to complete the puzzle? 8 hours

We can use the general formula of rate and time to solve this problem. Generally we have,

Rate * Time = Work/Job

** where Work/Job for this problem is 1 since they are doing 1 work, which is solving a puzzle

Finding rate of Sanjay:

$R(6)=1\\R=\frac{1}{6}$

Finding rate of Felipe:

$R(8)=1\\R=\frac{1}{8}$

Working together, their rate is the sum,

Total Rate = $\frac{1}{6} + \frac{1}{8} = \frac{7}{24}$ .

Using the general formula again, we can find the time it will take to solve the puzzle when both works together.

$(\frac{7}{24})T=1\\ T=\frac{1}{\frac{7}{24}}= \frac{24}{7} = 3.43$ hours

Rounding the answer, we have 3.4 hours.

ANSWER: 3.4 hours

6 0

3 years ago

Read 2 more answers

A club collected $3,472 to buy computers. If each computer cost $680, estimate the number of computers that the club can buy.exp

almond37 [142]

The club can buy 5 computers with $3472

Step-by-step explanation:

The number of computers which can be bought from the given amount will be calculated by dividing the amount by price of one computer.

Given

Total amount = $3472

Price of one computer =$680

The number of computers will be:

$=\frac{Total\ amount}{Price\ per\ computer}\\=\frac{3472}{680}\\=5.1\\$

As the number of an item cannot be in decimal it will be rounded off to 5.

The club can buy 5 computers with $3472

Keywords: Price per unit, pricing

Learn more about pricing at:

#LearnwithBrainly

8 0

3 years ago

Find the mean of the following data set: 9, 8, 11, 9, 16, 15, 13, 6, 15, 18

FromTheMoon [43]

Answer:

The mean is 12

4 0

3 years ago

Read 2 more answers

It takes 12 painters to paint the walls of a school in 21 days. In how many days the same job will be completed with 14 painters

nikklg [1K]

Answer:

18 days.

Step-by-step explanation:

We have been given that 12 painters paint the wall of a school in 21 days.

So the wall painted by one painter will paint the wall in $21\times 12\text{ days}=252\text{ days}$

As one painter will paint the wall in 252 days, so to find the number of days it will take to paint the same wall by 14 painters, we will divide time taken by one painter (252) by 14.

$\text{Time take by 14 painters to paint the wall}=\frac{252}{14}$

$\text{Time take by 14 painters to paint the wall}=18$

Therefore, it will take 18 days to paint the same wall by 14 painters.

8 0

2 years ago