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Svet_ta [14]
2 years ago
12

6 of 12

Mathematics
1 answer:
joja [24]2 years ago
7 0

Answer:

1225g

Step-by-step explanation:

945/135=7

175X7=1225

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In a high school, 7% of the students play the piano this is 21 students choose the expression that complete each step involved i
Inessa05 [86]

\frac{7}{100}  =  \frac{21}{x}  \\ x =  \frac{21 \times 100}{7}  =  \frac{2100}{7}  = 300
there are 300 students in the high school.
hope this helps
8 0
3 years ago
Roberto tool a test that contained 25 questions. He received an 88% on the test. how many questions did he answer correctly?
iren [92.7K]
He got 22/25 questions right because

if you put X as the number of questions he got right out of 25 and equal it to 88 out of 100 you can cross multiply to get X

x/25=88/100
100x=25×88

25×88=2200
100x=2200

divide 100 on both sides
therefore
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hope this helps
8 0
3 years ago
Read 2 more answers
Find the interval in which the function is negative.
DedPeter [7]

Answer:

  B. II only . . . (-1, 4)

Step-by-step explanation:

The function factors as ...

  f(x) = (x +1)(x -4)

The factors are zero when x=-1 and x=4. The value of the function will be negative when one of these factors is negative, between x=-1 and x=4. In interval notation, that interval is ...

  (-1, 4) . . . interval for f(x) < 0 . . . . . . interval description II (only)

3 0
3 years ago
What value of c makes the polynomial below a perfect square? x2 10x c
Elden [556K]
X^2 + 10x + c

Use the number in front of x, (10), to help you.

First, divide 10 by 2:
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Second, square the answer, (5).
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Answer: c=+25
5 0
3 years ago
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Lelechka [254]

Answer:

is there more info? I don't think this can be solved with given numbers could you take a more zoomed out photo?

5 0
3 years ago
Read 2 more answers
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