Ask question

Ask question

All categories

2 years ago

13

A student estimates that it would take her 3 hours to write a book report,but it actually takes he 5 hours what is the percent e

rror

1 answer:

aleksklad [387]2 years ago

5 0

Answer:

66.67%

If it wrong! IM SO SORRY:(

You might be interested in

What is the volume (in cubic units) of a cylinder with a radius of

Contact [7]

It would be 339.1 hope this helps

4 0

2 years ago

3) Bar Graphs are used for which type of data?

SCORPION-xisa [38]

Answer:

<u>Bar graphs are used to compare things between different groups or to track changes over time.</u>

However, when trying to measure change over time, bar graphs are best when the changes are larger.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Two persons work together at the local aquarium. It takes the first person 120 minutes to clean the jellyfish tanks. Since the s

matrenka [14]

Answer:

168 minutes

Step-by-step explanation:

It takes 120 minutes for the first person to clean the jellyfish tank.

This means that in 1 minute the first person cleans $\frac{1}{120}$ of the tank.

Let the time taken by the second person working alone to clean the tank be x minutes.

Then in 1 minute the second person cleans $\frac{1}{x}$ of the tank.

Working together, the two persons clean,

$\frac{1}{120} + \frac{1}{x}$ of the tank

But it is given that the two persons working together can clean the tank in 70 minutes. This means that in 1 minute both of them can clean $\frac{1}{70}$ of the tank.

Expressing in equation form:

$\frac{1}{120} + \frac{1}{x} = \frac{1}{70}$

$=> \frac{1}{x} = \frac{1}{70} - \frac{1}{120}$

$=> \frac{1}{x} = \frac{12-7}{840}$

$=> \frac{1}{x} = \frac{5}{840}$

$=> \frac{1}{x} = \frac{1}{168}$

$=> x = 168$

This means that the second person can clean the tank in 168 minutes.

7 0

3 years ago

What is the place value of the seven in the number 71,432,855

Andru [333]

Answer:

ten millions

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

The two-way table shows the number of men and women who voted for Candidate A or B.

Doss [256]

We're looking for a percentage of the people who voted for Candidate-A. So
the first thing we need to know is: How many people voted for Candidate-A ?

The number of people who voted for Candidate-A is

(1,253 men) + (1,921 women) = 3,174 people .

The question is: What percent of those people were women ?

Out of the total, 1,921 were women.
To find percent, you divide the part by the total.

1,921 / 3,174 = 0.6052 .

Changed to percent and rounded to the nearest whole one, that's<em> 61% .</em>

6 0

3 years ago