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serious [3.7K]
3 years ago
9

A student answered 12 out of 15 questions on an exam correctly.

Mathematics
1 answer:
den301095 [7]3 years ago
6 0

Answer:

1. 4/5

2. 80%

Step-by-step explanation:

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pheobe has 9 rocks. she puts the rocks into 3 boxes. Each box 1 more rock then the last. How many rocks are in each box
Svetllana [295]
Hello!

We can write this as the system of equations below. We have boxes A, B, and C.

A+B+C=9
B=A+1
C=B+1

First of all we can plug our B and C values into the first equation and solve for A.

A+A+1+A+1+1=9
3a+3=9
3a=6
a=2

Now we can plug our a value into the other equations.

B=2+1
B=3

C=3+1
C=4

Therefore, there are 2 rocks in one box, three in another, and 4 in the last.

I hope this helps!
4 0
3 years ago
Bill reads 1/5 of a book on Monday he reads 2/3 of a book on Tuesday if he finish reading the book on Wednesday what fraction of
Evgen [1.6K]

total book =1

1/5 + 2/3 + wed = 1

get a common denominator of 15

1/5 * 3/3 + 2/3 * 5/5 + wed = 1 * 15/15

3/15 + 10/15 + wed = 15/15

combine like terms

13/15 + wed = 15/15

subtract 13/15 on each side

wed = 15/15-13/15

wed = 2/15

He read 2/15 of the book on Wednesday

5 0
3 years ago
HOS
lianna [129]

Answer:

B

Step-by-step explanation:

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3 years ago
Hello i need help with this question
scoundrel [369]

Answer:

4pf

Step-by-step explanation:

4 0
3 years ago
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O is the centre of this circle and point Q is a point of tangency. Determine the value of t. If necessary, give your answer to t
dsp73

Answer:

Hello bozo

Step-by-step explanation:

4 0
2 years ago
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