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zhuklara [117]
2 years ago
5

A race car driver complete 30 laps in 15 minutes at a constant Speed

Mathematics
1 answer:
brilliants [131]2 years ago
3 0

Answer:

Sooo it can complete 120 laps in 1 hour.

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There are 10 pens in a box. There are x red pens in the box. All the other pens are blue. Jack takes at random two pens from the
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The probability that one of each color is selected is \frac{10x - x^2}{45}

<h3>Probabilities</h3>

The probability of an event is the chances of the said event

The given parameters are:

  • Total  = 10
  • Red = x
  • Blue = 10 - x

<h3>Calculating the required probability</h3>

The probability that one of each color is selected is calculated as follows:

P = P(Blue) \times P(Red) + P(Red) \times P(Blue)

So, we have:

P = \frac{10 - x}{10} \times \frac{x}{9} + \frac{x}{10} \times \frac{10 - x}{9}

This gives

P = \frac{x(10 - x)}{90} +\frac{x(10 - x)}{90}

Take LCM

P = \frac{2x(10 - x)}{90}

Simplify the above expression

P = \frac{x(10 - x)}{45}

Expand

P = \frac{10x - x^2}{45}

Hence, the probability that one of each color is selected is P = \frac{10x - x^2}{45}

Read more about probabilities at:

brainly.com/question/7965468

4 0
2 years ago
Your cousin borrowed $6000, some on a home-equity loan at an interest rate of 9.5% and the rest on a consumer loan at an interes
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Answer:

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3 years ago
Given that a = 2.4 cm, and b = 9.6 cm, work out x
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Answer:

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Step-by-step explanation:

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A box contains 20 miniature golf putt-putt balls; 10 are
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Answer: The answer is provided below

Step-by-step explanation:

From the question, a box contains 20 miniature golf putt-putt balls out of which 10 are yellow, 6 are red, and the remaining 4 are pink.

The probability of picking a red golf ball will be:

= 6/20 × 100

= 600/20

= 30%

If the red ball is replaced, the probability of picking a yellow golf ball will be:

= 10/20 × 100%

= 50%

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I have no idea sorry brainly is making me answer questions here’s a picture of my dog

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