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2 years ago

The data reflects the amount of time spent on homework (x), paired with a corresponding test grade (y).

Mathematics

1 answer:

NARA [144]2 years ago

6 0

Answer:

If no time is spent on homework, the test grade is approximately 72.

Step-by-step explanation:

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The difference of a number and 6 Is the same as 5 times the sum of the number and 2. What is the number?

maria [59]

Answer:

A -4

Step-by-step explanation:

x- 6 = 5(x+2)

x- 6= 5x +10

-6-10 = 5x - x

-16 = 4x

x = -16/4

x = -4

4 0

2 years ago

Calculate the work done. A tractor pulls a heavy log with a force of 100 pounds. The log moves 3 feet.

Pavel [41]

f = m*a (force equals mass and acceleration)

And since we don't know the actual mass then it's- 100=(m)*3

So when the tractor pulled the log that is, 100 pounds and it only moved 3 feet.

But calculating it (by multiplication) equals to 300 ft-lbs, so therefore it can't be 130 ft-lbs.

So by my guess, it's 300 ft-lbs, since it's impossible and strange to even reach some number as the first and second one.

____

I hope this helps, as always. I wish you the best of luck and have a nice day, friend..

6 0

2 years ago

Find the perimeter of the object

Ostrovityanka [42]

The answer is 75 feet

3 0

2 years ago

Read 2 more answers

For the mathematics part of the SAT the mean is 514 with a standard deviation of 113, and for the mathematics part of the ACT t

otez555 [7]

Answer:

Bob performed better in mathematics part of the SAT than the ACT

Step-by-step explanation:

We need to calculate the z-scores for both parts and compare them.

Z-score for the SAT is calculated using the formula:

$Z=\frac{X-\mu}{\sigma}$

where $\mu=514$ is the mean and $\sigma=113$ is the standard deviation, and $X=660$ is the SAT test score.

We plug in these values to obtain:

$Z=\frac{660-514}{113}$

$Z=\frac{146}{113}=1.29$ to the nearest hundredth.

We use the same formula to calculate the z-score for the ACT too.

Where $\mu=20.6$ is the mean and $\sigma=5.1$ is the standard deviation, and $X=27$ is the ACT test score.

We substitute the values to get:

$Z=\frac{27-20.6}{5.1}=1.25$ to the nearest hundredth.

Since 1.29 > 1.25, Bob performed better in mathematics part of the SAT

4 0

2 years ago

What is a sequence? How do I determine if a sequence is arithmetic or geometric?

adell [148]

Answer: Ok So Compute successive differences of the terms. If they are all the same, the sequence is arithmetic and the common difference is the difference you have found. If successive pairs of differences have the same ratio, the sequence is geometric The common pattern in an arithmetic sequence is that the same number is added or subtracted to each number to produce the next number. This is called the common difference. The common pattern in a geometric sequence is that the same number is multiplied or divided to each number to produce the next number.and the common ratio is the ratio you have determined.

Hope this helps have a awesome day❤️

Step-by-step explanation:

4 0

2 years ago