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4 years ago

PLEASE HELP ME!!!!!!! WILL GIVE THANKS AND RATING!!!!!! PLEASEEEEEEEEEEEEEE!!!!!!!

Mathematics

1 answer:

EastWind [94]4 years ago

5 0

2 3/4 * 3.36 / (1 2/5)
=11/4 * 3.36 / (7/5)
= 9.24 / (7/5)
= 9.24 / 1.4
= 6.6

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2. Craig read 3 books each week for 3 weeks. Joe read 4 books a week for 3 weeks. How many more books did Joe read? Choose the a

Burka [1]

Answer:

4*3 - 3*3;

Joe read 3 more books than Craig

Step-by-step explanation:

Given

Craig:

3 books weekly for 3 weeks

Joe:

4 books weekly for 4 weeks

Required

How many more books did Joe read.

First, we need to determine number of books Craig reads

If in a week, Craig reads 3 books

Then in 3 weeks, Craig reads 3 * 3 books

Next, we need to determine number of books Joe reads

If in a week, Joe reads 3 books

Then in 4 weeks, Joe reads 4 * 3 books

Next, we determine the difference;

$Difference = 4 * 3 - 3 * 3$

$Difference = 12 - 9$

$Difference = 3$

Hence, Joe reads 3 more books

Option D answers the question.

3 0

3 years ago

Match the scale drawing area and the actual area to the correct scale.

Amanda [17]

Answer:

13:117 = 1:3

5:125 = 1:5

8:128 = 1:4

12:48 = 1:2

Step-by-step explanation:

117/13 = 9

√9 = 3

125/5 = 25

√25 = 5

128/8 = 16

√16 = 4

48/12 = 4

√4 = 2

3 0

4 years ago

With regard to a regression-based forecast, the standard error of the estimate gives a measure of A. the variability around the

Travka [436]

Answer:

B. the variability around the regression line.

Step-by-step explanation:

The standard errors represents the distance (how sparse) the observed values fall from the regression line.

Standard errors for regression are measures of the spread of variables around the average (regression line)

The standard error is dependent on the standard deviation of the observations and the reliability of the test.

When the test is perfectly reliable, the standard error is zero and when unreliable, it is equal to the standard deviation of the observations.

8 0

3 years ago

a group of friends are riding bicycles. She takes 4 hours to ride 25.6 kilometers whats there speed?

Dvinal [7]

Answer:

6.4 Kilometers Per Hour

Step-by-step explanation:

To find how many kilometers per hour divide the kilometers traveled by the amount of hours they have rode.

25.6/4=6.4

5 0

3 years ago

Please help! I need this ASAP!!! + Brainliest to first correct answer!

Levart [38]

Answer:

$\text{C. } 2$

Step-by-step explanation:

Proportional functions can be represented by $y=kx$ , where $k$ is a constant of proportionality and $(x, y)$ represents any point the line passes through.

In the graph, we can see the line passes through (20, 40). Therefore, we can plug in these coordinates to find the constant of proportionality:

$y=kx,\\40=k(20),\\k=\frac{40}{20}=\boxed{\text{C. }2}$

5 0

3 years ago

Read 2 more answers