A student got an 85% on his test . If he got 12 questions wrong , how many questions were on the test?
Answers
Answer:
80 questions
Step-by-step explanation:
Given that a student received an 85% grade on his test, and that he got 12 questions wrong:
We could infer that if he answered all of the test questions correctly, then he would have received a perfect score of 100% on his test.
Since he got 12 questions wrong, then it means that those wrong answers account for the 15% out of receiving a 100% grade on his test (or: 100% - 85% = 15%).
Let x = number of test questions
In order to find how many questions were on his test:
12 questions = 15% (or 0.15) of the total number of questions (x)
12 questions = 0.15x
Divide both sides by 0.15 to isolate x:
x = 80 questions
Therefore, there were 80 questions on his test.
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Answers
1/4 of one pizza is 2 pieces.
So 16 minus 2 pieces is 14 pieces.
If she ate another 3 pieces then we subtract that from 14.
14 minus 3 is 11 pieces.
There is 11 pieces of pizza left from the original 16 pieces.
Final answer:
If Patricia had two pizzas cut into eighths, she had 16 slices. After eating 1/4 of a pizza (2 slices) on Friday and 3 slices on Saturday (total of 5 slices), she had 11 slices left.
Explanation:
Patricia had two pizzas, and each was cut into eighths. This implies she had 2 * 8 = 16 slices of pizza initially. If Patricia ate 1/4 of a pizza on Friday, that's equivalent to eating two slices (since each pizza had 8 slices) and then she ate 3 more slices on Saturday. So, Patricia in total ate 2 + 3 = 5 slices.
Subtracting the amount Patricia ate from her initial number of slices will give the remaining slices. So, she has 16 - 5 = 11 slices of pizza left.
Learn more about Fractional Division of Pizza here:
#SPJ12
Answers
Answer:45.5% decrease????
Step-by-step explanation:
T
(9x – 19)°
U
111°
((7x + 3)
X
(5x + 8)
128°
W
Answers
Answer:
103
Step-by-step explanation:
6 sides
(6-2)180 =720
720 = S×T+U+V+W+X
S=90
720 = 90 + (9X-19) + (111) + (5X+8) + (128) + (7X+3)
COMBINE LIKE TERMS
720= (90-19+111+8+128+3) + (9X+5X+7X)
720 = 321 + 21X
720-321 = 321-321 + 21X
399 = 21X
19 = X
mV = 5X + 8
mV = 5(19) + 8
mV = 95 + 8
mV = 103
Answers