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3 years ago

7

Mr. Rich has 75 papers. He graded 60 papers, and he had a student teacher grade the rest. What percent of the papers did each pe

rson grade?
Please help me ASAP

2 answers:

WINSTONCH [101]3 years ago

8 0

The Answer is Mr.Rich:80 percent Student: 20 percent

myrzilka [38]3 years ago

7 0

Answer:

Mr. Rich did 80% and the student did 20%

Step-by-step explanation:

60/75 = 80%

15/75 = 20%

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Express the sum of each pair of numbers as a product of the greatest common factor of the numbers and another sum.

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9) 147
10) 145
greatest common factor is 14 I think

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3 years ago

The point-slope form of the equation of the line that passes through (-9, -2) and (1, 3) is y - 3 = {(x :- 1). What is

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4 years ago

Give the equation for the new circle obtained by translating the circle (x+2)^2 + (y-1)^2 = 25 by 3 units to the right and 2 uni

Reika [66]

Answer:

(x - 1)^2 + (y + 1)^2 = 25

Step-by-step explanation:

The equation of a circle centered in the point (a, b) with a radius R is:

(x - a)^2 + (y - b)^2 = R^2

If we translate the circle 3 units to the right and 2 units down, then we translate the center 3 units to the right and 2 units down.

So if the original center was (a, b), and we translate it 3 units to the right, then we need to add 3 to the x-component, we get:

(a + 3, b)

Now if we want to move the center two units down, we need to subtract 2 in the y-value, we get:

(a + 3, b - 2)

This will be the new center of the circle.

Now let's look at our circle, we have:

(x + 2)^2 + (y - 1)^2 = 25

The center of this circle is:

(-2, 1)

After the translation, the center will be:

(-2 + 3, 1 - 2)

(1, -1)

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3 0

3 years ago

Dobbs Bowling Company made a profit of $1,588 during the month of December. The company models its profit, P, using the formula

quester [9]

Answer: 42 bowls were sold in the month of December.

Step-by-step explanation:

Here, The company models its profit, P, using the formula $P=u^2-4 u-8$ , where u is the number of bowling balls the company sells.

Since, Dobbs Bowling Company made a profit of $1,588 during the month of December.

Therefore, $1588=u^2-4 u-8$

⇒ $u^2-4 u-8=1588$

⇒ $u^2-4 u-1596=0$

⇒ $u^2-42u+38u-1596=0$

⇒ $u(u-42)+38(u-42)=0$

⇒ $(u+38)(u-42)=0$

⇒ u = 42 and -38

Since, The number of balls can not be negative.

Therefore, total number of the bowling balls in December that are sold = 42

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3 years ago

Soloha48 [4]

The answer: the second one y= -2x+7

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3 years ago

Read 2 more answers