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storchak [24]
3 years ago
6

Anita got 4 problems wrong on a test of 36 questions. what percent of the questions did she get correct

Mathematics
1 answer:
pickupchik [31]3 years ago
4 0
The answer would be about 89% 
to solve this problem first you would have to subtract 4 from 36 to get 32 because you want to know how many she got right first .
so you put 32 over 36 ( the number she got right over the total number of questions ) and n ( the number you don't know yet ) over 100 . that will be the percent .
next all you have to do is cross multiply 32 times 100 and 36n , to get 3200 and 36n . 
now you have to divide 3200=36n by 36 so you get n by its self but you have to divide on both sides of the equal sign .
when you divide you will then get 88 with a lot of remainder 8's so you would just round up to 89 .
finally you know n = 89% so she got 89% of her questions right .
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2 years ago
4. Stella says the equation x^2−8x+y^2+2y=5 has a center of (4,−1) and a radius of 5. Is she correct? Why or why not?
Ostrovityanka [42]
<h2>Stella is correct about center and wrong about radius      </h2>

Step-by-step explanation:

Equation of circle with (h,k) as center and radius r is given by,

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Here equation is

          x²−8x+y²+2y=5

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8 0
3 years ago
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ikadub [295]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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