3 years ago

you took a 20 question test and received a 65% on the test. how many question did you answer correctly

1 answer:

8 0

You answered 13 correct, you can search this up by putting 65 percent of 20 and you would get the answer, just in case you have other questions like this!

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Can someone help me with this? I will mark you as brainliest

Tresset [83]

Answer:

1372$

Step-by-step explanation:

the price =15600+20/100*15600=15600*120/100=18720

18720-5000=13720 $

13720:10=1372 $

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3 years ago

Aflati triunghiul dreptunghic ABC daca a) a=17 si b=8<br> b) c=6<br> C=42 grade

Ierofanga [76]

Answer is c c=42 grade

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3 years ago

Miss Osborne is standing next to a tree at high noon the tree cast a 44 foot shadow and miss Osborne cast a 4 foot shadow how ta

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Answer:ok soooo I did this last year but I don’t remember anymore

Step-by-step explanation:

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3 years ago

Kira's store collects 5% sales tax on every item sold. If she collected $22 in sales tax, what was the cost of the items her sto

Hatshy [7]

Answer:

Step-by-step explanation:

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3 years ago

You have 100 feet of fencing and decide to make a rectangular garden. What is the largest area enclosed

k0ka [10]

Answer:

625 ft^2

Step-by-step explanation:

Given

$P = 100$ --- perimeter

Required

The largest area

The perimeter is calculated as:

$P = 2 * ( L + W)$

So, we have:

$2 * ( L + W) = 100$

Divide both sides by 2

$L + W = 50$

Make L the subject

$L = 50 - W$

The area is calculated as:

$A= L * W$

Substitute $L = 50 - W$

$A= (50 - W) * W$

Open bracket

$A = 50W - W^2$

Differentiate with respect to W

$A' = 50 -2W$

Set to 0; to get the maximum value of W

$50 - 2W = 0$

Collect like terms

$-2W = -50$

Divide by -2

$W = 25$

So, the maximum area is:

$A = 50W - W^2$

$A = 50 * 25 - 25^2$

$A = 1250 - 625$

$A = 625$

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2 years ago