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3 years ago

Which is a factor of 15xy − 45x − 6y + 18?

Mathematics

2 answers:

Nadya [2.5K]3 years ago

8 0

The factor of 15xy − 45x − 6y + 18 is 3(y-3)(5x-2).

AleksandrR [38]3 years ago

6 0

15xy−45x−6y+18

3(y−3)(5x−2)

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An ice cream factory makes 270 quarts of ice cream in 2 hours. How many quarts could be made in 48 hours. What was the rate per

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Answer:

6480 quarts in 48 hours

3240 quarts in a day(24 hours)

Step-by-step explanation:

2*24 is 48, so then 270*24=6480

and then half of 48 hours is a day so just half of 6480

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What’s the correct answer for this?

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Answer:

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Step-by-step explanation:

We know that the change in x from A to M is -2, and the change in y is 1 -- we can simply double that and add that to A to get B, as M is halfway between A and B. Thus, (6,5)+(-4,2)=(2,7) as the coordinates of B

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Ms. Rivera created two dot plots to compare the results of her recent science quiz for 1st period students compared to 7th perio

Lorico [155]

The dot plots is an illustration of charts and graphs

The average score of period 7 is greater than the average score of period 1

<h3>How to determine the period with the higher average?</h3>

From the dot plots in the complete question, we have the following frequency tables

Period 1 Period 7

Score Students Score Students

55 1 65 1

70 1 75 3

75 6 80 5

80 6 85 6

85 2 90 3

90 3 95 2

95 1

The average is calculated using:

$\bar x = \frac{\sum fx}{\sum f}$

For period 1, we have:

$\bar x_1 = \frac{55 * 1 + 70 * 1 + 75 * 6 + 80 * 6 + 85 * 2 + 90 * 3 + 95 * 1}{1 + 1 + 6 + 6 + 2 + 3 + 1}$

Evaluate the sum

$\bar x_1 = \frac{1590}{20}$

Evaluate the quotient

$\bar x_1 = 79.5$

For period 7, we have:

$\bar x_7 = \frac{65 * 1 + 75 * 3 + 80 * 5 + 85 * 6 + 90 * 3 + 95 * 2}{1 + 3 + 5 + 6 + 3 + 2}$

Evaluate the sum

$\bar x_7 = \frac{1660}{20}$

Evaluate the quotient

$\bar x_7 = 83$

By comparison, 83 is greater than 79.5

Hence, the average score of period 7 is greater than the average score of period 1

Read more about dot plots at:

brainly.com/question/12276901

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Answer:

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