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3 years ago

PLZ HELP PLZ HELP WHATS THE ANSWER

1 answer:

4 0

For the first equation it should be 1 and 4 because 7(1)+6(4) would simplify to 7+24 which equals 31.

Then for the second equation, well... there’s multiple answers:

First would be 3 and -2 because 3(3)-10(-2) simplifies to 9+20=29.

Another one would be 23 and 4 because 3(23)-10(4) simplifies to 69-40=29.

Hopefully this helps :D

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What is 1+1+8-2? very confused, PLEASE HELP!!

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3 years ago

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A sea bird is 28 meters above the surface of the ocean what is its elevaction

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3 years ago

If a person picks a pair of different Months, what is the probability that both months (different) have less than 31 days?

wlad13 [49]

Answer:

15.15% probability that both months (different) have less than 31 days.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Also, the order of the months is not important. For example, picking July and August is the same as picking August and July. So the combinations formula is used to solve this problem

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

There are 12 months, of which February, April, June, September and November, that is, 5 of them, have less than 31 months.

Desired outcomes:

Picking 2 months from a set of 5(those with less than 31 days). So

$D = C_{5,2} = \frac{5!}{2!(3)!} = 10$

Total outcomes:

Picking 2 months from a set of 12(all the months). So

$T = C_{12,2} = \frac{12!}{2!(10)!} = 66$

Probability:

$P = \frac{10}{66} = 0.1515$

15.15% probability that both months (different) have less than 31 days.

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3 years ago

Rewrite the expression using radical notation 27 2/3

UkoKoshka [18]

The expression using radical notation 27 2/3

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3 years ago

Some money was invested at 12% interested for 2 years. If the interest was $21, how much was invested?

astra-53 [7]

Answer:

$87.5 was invested

Step-by-step explanation:

10.5 is 12% of 87.5, so if the money was in the bank for 2 years, we would have to do 10.5*2 which is 21, and that's how much money was gained from the investment.

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3 years ago