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Korolek [52]
3 years ago
8

NEED ANSWER ASAP. AND EXPLAIN STEP BY STEP PLEASE..............................................

Mathematics
1 answer:
notsponge [240]3 years ago
6 0
Easiest way to do it is add the X's together and then half it, same with the Y's.
X) -1+-6= -7 -7/2,
Y) 5+-2= 3 3/2
So the answer is B.
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What is the relationship between the tables, equations and graphs as it relates to rate of change/slope?
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What is the relationship between equations and graphs?

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3 years ago
A bag contains 40 marbles. The probability of selecting a red marble at random is 1/5. How many red marbles are in the bag?
goblinko [34]

Answer:

8 red marbles.

Step-by-step explanation:

All together we have 40 marbles. The fraction of marbles that are red is 1/5 which means that we should divide the total number of marbles, which is 40 by the denominator ( Bottom number of fraction ) 5 so that we get the number of groups that have 1 red marble in them. In this case we have 8 groups.

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You always divide by the denominator ( Bottom number of fraction ) first and then you multiply your answer by the numerator ( Top number of fraction ) .

If each group has 1 red marble in it and we have 8 groups, it means that we have 8 red marbles in the bag.

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If the numerator (number above the fraction line) was more than one, then this would mean that we have more than 1 marble in each group of marbles.

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If we had 3/5 we would have 3 marbles in each group of marbles. This means that instead of doing 1 * 8 we would have to do 3 * 8 = 24. We would have 24 red marbles in the bag.

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Another way we could do this is by simply multiplying the fraction ( 1/5 ) by the total number of marbles ( 40 ). This would still give us an answer of 8 red marbles in the bag. 40/5=8, 8*1=8

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