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3 years ago

10

A^3-a^2-2a+8 factorize

1 answer:

Nostrana [21]3 years ago

4 0

Answer:

factors-----(a+2)(a^2+4-3a)

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At a 3-mile cross-country race, an athlete runs 2 miles at 6 mph and 1 mile at 12 mph. What is the athlete's average speed?

Tom [10]

Answer: the average speed is 7.5 mph or at least im pretty sure

Step-by-step explanation:

This is because if you make the 2 miles at 6 mph to 1 mile at 3 mph then you get 1 mile at 3mph and 1 mile at 12 mph. now that you have the unit rates of these you can add them. 1 + 1 = 2 miles and 3 + 12 = 15 mph now divide this by two and you get 7.5 mph per mile.

I hope this helped, if it did could you give me a good rating? lol

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3 years ago

Help plz ill give extra points

Alecsey [184]

Answer: Point B

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3 years ago

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Step-by-step explanation:

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2 years ago

Two fair dice are tossed, and the up face on each die is recorded. Find the probability of observing each of the following event

Kamila [148]

Answer:

Step-by-step explanation:

When two fair dice are tossed sample space consists of 36 events

(1,1)....(6,6)

A_ The difference of numbers is 2 or less

Favorable outcomes = $(1,1) (1,2) (1,3) (2,1) (2,2)(2,3) (2,4) (3,1) (3,2) (3,3) (3,4) (3,5) (4,2) (4,3)(4,5) (4,6) (5,3) (5,4) (5,6)\\$

Hence Probability = $\frac{19}{36}$

B) A 4 does not appear on either die

Then we must not have these

$(4,1)(4,2)(4,3) (4,4) (4,5) (4,6)\\(1,4) (2,4) (3,4) (5,4) (6,4)$

Hence probability = $\frac{36-11}{36} =\frac{25}{36}$

C: The sum of numbers is 10 or more:

FAvourable outcomes are:

$(4,6) (5,5) (5,6) (6,5) (6,4)$

Probability = $\frac{5}{36}$

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3 years ago

Does 28.40 equal with 28.400?

Nastasia [14]

$Question$

Does 28.40 equal with 28.400?

Answer:

The Answer Is yes 28.40 Does Equal 28.400

Hope this helps!!

$xXxAnimexXx$

4 0

3 years ago