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Debora [2.8K]
3 years ago
7

PLEASE HELP NEED TO KNOW IF IM CORRECT WILL REWARD BRAINLIEST ANSWER!

Mathematics
1 answer:
Neporo4naja [7]3 years ago
8 0
X^2=256

x=±√256

x=±16

x=-16 and 16
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A bookstore had 90 copies of a magazine. Yesterday, it sold 1/6 of them. Today, it sold 1/5 of what remained. How many copies do
MA_775_DIABLO [31]

Answer:

60 copies

Step-by-step explanation:

first you take 1/6th of the original 90 copies which is 15 and subtract that from the 90, you are left with 75 copies which is how many they had left at the end of yesterday. then you take 1/5th of the 75 copies that are left which is also 15 and you subtract that from 75 and you get 60. that's why at the end of today there are 60 copies left.

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3 years ago
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Sonbull [250]

Answer:

Car loans, amortized monthly, and retailer installment loans, also calculated monthly, are examples of simple interest; as the loan balance dips with each monthly payment, so does the interest. Certificates of deposit (CDs) pay a specific amount in interest on a set date, representing simple interest

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3 years ago
Help me please thank you
BabaBlast [244]

Let's use a formula in order to find how much the interior angles are supposed to add up to.

(n-2)×180; n is the number of angles.

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540-431= 109

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3 0
3 years ago
An EPA contractor needs to test the concentration of a substance in ten samples of the ground water. Seventy samples were
olga55 [171]

Answer:

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Step-by-step explanation:

An EPA contractor needing to test the concentration of a substance in ten samples out seventy samples provided form a single source at regular time intervals.

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He will have to select ;  ( x / n )^th of the sampling frame for best results

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Add 8.1 to both sides to find x!
hope this helps :-)

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3 years ago
Read 2 more answers
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