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Lostsunrise [7]

3 years ago

8

Two riders, A and B leave the starting line at the same time. A takes 12 minutes to complete one lap and the B takes 18 minutes.

How long in minutes after they will it take for them to meet again at the starting line?

1 answer:

irina [24]3 years ago

3 0

6 minutes after i believ3e ?

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On a track and field team, 8% of the members run only long-distance, 32% compete only in field events, and 12% are sprinters onl

kondor19780726 [428]

Answer:

0.40

Step-by-step explanation:

Members who run only long distance = 8%

So, probability that a member will run only long distance = P(A) = 0.08

Members who compete only in field events = 32%

So, probability that a member will compete only in field events = P(B) 0.32

Members who are sprinters = 12%

So, probability that a member is sprinter = P(C) 0.12

We have to calculate the probability that a randomly chosen team member runs only long-distance or competes only in field events. i.e we have to find P(A or B). Since these events cannot occur at the same time, we can write:

P(A or B) = P(A) + P(B)

Using the values, we get:

P(A or B) = 0.08 + 0.32 = 0.40

Thus, the probability that a randomly chosen team member runs only long-distance or competes only in field events is 0.40

7 0

3 years ago

If a car with an average speed of 50 miles per hour travels for 30 minutes, how far will it have gone?

Rainbow [258]

50 miles per hour divided by 30 minutes which is 1/2 hours thus 50/2=25 miles.

7 0

3 years ago

Help 8 minutes to turn in

Alenkasestr [34]

The answer may be the second choice.

3 0

4 years ago

In triangle ABC, ∠C is a right angle and BC=7. If ∠b=30 degrees, find AC.

dlinn [17]

Answer B

One thing that gave it away was that we are dealing with a 30-60-90 triangle so in the final equation we should have (x=Any number) $x\sqrt{3}$ not square root two

7 0

4 years ago

This is #5 <br> Algebra-Find the value for x<br> I know it’s 11 but how do I get there.

Sergeeva-Olga [200]

Answer:

x = 11

Step-by-step explanation:

the line x + 5 is a mid segment of the triangle and thus is half the length of 3x - 1, that is

x + 5 = $\frac{1}{2}$ (3x - 1)

multiply both sides by 2 to eliminate the fraction

2x + 10 = 3x - 1 ( subtract 3x from both sides )

- x + 10 = - 1 ( subtract 10 from both sides )

- x = - 11 ( multiply both sides by - 1 )

x = 11

3 0

4 years ago