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ludmilkaskok [199]
3 years ago
11

A sixth- grade math teacher can grade 25 homework assignments in 20 minutes. Is he working at a faster rate or slower rate than

grading 36 homework assignments in 30 minutes?
( comparing rates)
Mathematics
1 answer:
Akimi4 [234]3 years ago
5 0

Answer:

  faster

Step-by-step explanation:

25 in 20 minutes is 25/20 = 1.25 per minute

36 in 30 minutes is 36/30 = 1.20 per minute

The first rate is faster.

You might be interested in
five years ago fathers age was 4 timess his son age now the sum of the age is 45 find the present age
tekilochka [14]
You could use a calculator
5 0
2 years ago
The value of a school bus reduces from $512000 to $343000in 3 years. Find the
Eva8 [605]

Answer:

<em>The uniform rate of depreciation is $56,333 per year, or 11% per year.</em>

Step-by-step explanation:

<u>Rate of Depreciation</u>

If some object has a certain value P and after some time t its value decreases to Q, the rate of depreciation is a measure of how much its value changed per unit time.

It can be calculated as:

\displaystyle R=\frac{P-Q}{t}

It can also be expressed as a percentage, dividing the previous value by P.

The school bus reduces its value from $512,000 to $343,000 in 3 years, thus:

\displaystyle R=\frac{512,000-343,000}{3}

\displaystyle R=\frac{169,000}{3}

R = 56,333 $/year

Expressed as a percentage:

R = 56,333 / 512,000 = 0.11

R = 11%/year

The uniform rate of depreciation is $56,333 per year, or 11% per year.

8 0
3 years ago
Graph the image of the given triangle under a dilation with a scale factor of 1/4 and center of dilation ​(0, 0)
schepotkina [342]

Answer:

The image in the attached figure

Step-by-step explanation:

we know that

The dimensions of the image of the given triangle are equal to the original dimensions of the pre-image multiplied by the scale factor

In this problem the scale factor is 1/4

The height of the pre-image is 4 units

The base of the pre-image is 8 units

Find out the dimensions of the image

The height of the image is (4)\frac{1}{4}=1\ unit

The base of the image is (8)\frac{1}{4}=2\ units

The image in the attached figure

6 0
3 years ago
Suppose you are traveling on business to a foreign country for the first time. You do not have a bus schedule, but you have been
maksim [4K]

Answer:

C

Step-by-step explanation:

Lucky guess I guess.

8 0
3 years ago
Simplify the expression 256b − b by combining like terms.
iris [78.8K]

Answer:

255b

Step-by-step explanation:

subtract 256b by b

7 0
3 years ago
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