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Setler [38]
2 years ago
13

NEED HELP 45 POINTS PLZ

Mathematics
1 answer:
miskamm [114]2 years ago
6 0

Answer:

I have given the answer in the chat box as i was not able to post officialy

Step-by-step explanation:

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Donovan can type 45 words per minute. He needs to type a report that is 9 pages long each page has about 300 words. What is a re
irinina [24]

Answer:

C.60

Step-by-step explanation:

Just multiply 300 by 9 and then divide by 45.

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Error Analysis jessie incorrectly said the rate 1/5 hour 1/10 acer can be written as the unit rate 1/50 per acer . What is the c
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Step-by-step explanation:

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3 years ago
Read 2 more answers
A page should have perimeter of 42 inches. The printing area within the page
Tamiku [17]

Overall  dimensions of the page in order to maximize the printing area is  page should be 11 inches wide and 10 inches long .

<u>Step-by-step explanation:</u>

We have , A page should have perimeter of 42 inches. The printing area within the page  would be determined by top and bottom margins of 1 inch from each side, and the  left and right margins of 1.5 inches from each side. let's assume  width of the page be x inches  and its length be y inches So,

Perimeter = 42 inches

⇒ 2(x+y) = 42\\x+y = 21\\y = 21-x

width of printed area = x-3  & length of printed area = y-2:

area = length(width)

area = (x-3)(y-2)\\area = (x-3)(21-x-2)\\area = (x-3)(19-x)\\area = -x^{2} + 22x -57

Let's find \frac{d(area)}{dx}:

\frac{d(area)}{dx} = \frac{d(-x^{2}+22x-57)}{dx} = -2x +22 , for area to be maximum \frac{d(area)}{dx}= 0

⇒ -2x+22 = 0\\2x =22\\x=11 inches

And ,

y = 21-x\\y = 21-11\\y = 10 inches

∴ Overall  dimensions of the page in order to maximize the printing area is  page should be 11 inches wide and 10 inches long .

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3 years ago
Solve the system of linear equations and show your work.<br> −8x+5y=26<br> 9x−3y=−3
maks197457 [2]
X is 7 and y is 2 I am pretty sure
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3 years ago
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