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2 years ago

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How do you do division/long division? I was never taught how, and now I am struggling with it. Please answer thoroughly, thanks

<3

1 answer:

grin007 [14]2 years ago

4 0

Answer:

See attached picture for example, hope it helps!

Step-by-step explanation:

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The top and bottom margins of a poster are each 12 cm and the side margins are each 8 cm. The area of printed material on the po

grin007 [14]

Answer:

Dimensions of printed poster are

length is 32 cm

width is 48 cm

Step-by-step explanation:

Let's assume

length of printed poster is x cm

width of printed poster is y cm

now, we can find area of printed poster

so, area of printed poster is

$=xy$

we are given that area as 1536

so, we can set it to 1536

$xy=1536$

now, we can solve for y

$y=\frac{1536}{x}$

now, we are given

The top and bottom margins of a poster are each 12 cm and the side margins are each 8 cm

so, total area of poster is

$A=(8+x+8)\times (12+y+12)$

$A=(x+16)\times (y+24)$

now, we can plug back y

$A=(x+16)\times (\frac{1536}{x}+24)$

now, we have to minimize A

so, we will find derivative

$A'=\frac{d}{dx}\left(\left(x+16\right)\left(\frac{1536}{x}+24\right)\right)$

we can use product rule

$A'=\frac{d}{dx}\left(x+16\right)\left(\frac{1536}{x}+24\right)+\frac{d}{dx}\left(\frac{1536}{x}+24\right)\left(x+16\right)$

$=\frac{d}{dx}\left(x+16\right)\left(\frac{1536}{x}+24\right)+\frac{d}{dx}\left(\frac{1536}{x}+24\right)\left(x+16\right)$

now, we can simplify it

$A'=-\frac{24576}{x^2}+24$

now, we can set it to 0

and then we can solve for x

$A'=-\frac{24576}{x^2}+24=0$

$-\frac{24576}{x^2}x^2+24x^2=0\cdot \:x^2$

$-24576+24x^2=0$

$x=32,\:x=-32$

Since, x is dimension

and dimension can never be negative

so, we will only consider positive value

$x=32$

now, we can solve for y

$y=\frac{1536}{32}$

$y=48$

so, dimensions of printed poster are

length is 32 cm

width is 48 cm

5 0

3 years ago

I did help on this question

Advocard [28]

Answer:

6/7

Step-by-step explanation:

8 0

3 years ago

Jessamyn bought 3 notebooks that cost $2.25 each and a pen that cost $0.75. Sales tax on her purchases was

barxatty [35]

Number one i think i am correct

5 0

3 years ago

Read 2 more answers

Could the side lengths below form a right triangle? Explain. 5, 7.5, 2.5

jenyasd209 [6]

Answer:

No because the a and b lengths are too big and the c length is too small

Step-by-step explanation:

a^2 + b^2 = c^2

5^2 + 7.5^2 = 2.5^2

25 + 56.25 = 6.25

4 0

3 years ago

Amy ran 5/6 of a mile from her house, and then turned around and ran 3/4 of a mile back. How far does she have to go to get home

Marina CMI [18]

Find a common denominator.

5/6 and 3/4

10/12 and 9/12.

If she ran 10/12 of a mile away and turned around and ran 9/12's back, she is 1/12 of a mile away.

8 0

4 years ago