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3 years ago

Please help quick. 100 points ;)

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

7 0

Answer:

It travels for 1 hour, then stops for 1 hour, and finally travels again for 3 hours.

yarga [219]3 years ago

5 0

Answer:

travel 2 hour stop 1 hour then again for 2 hours

Step-by-step explanation:

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The Wilsons traveled the 2400 miles of Route 66 from Chicago,IL to Santa Monica, CA. If their total driving time was 50 hours, w

Zolol [24]

Answer:

48 miles per hour

Step-by-step explanation:

If they traveled 2400 miles and the total driving time was 50 hours, divide 2400/50 in order to find how many miles they drove per hour.

4 0

2 years ago

Read 2 more answers

PLZZZ ASAP I NEED HELP!!!!

7nadin3 [17]

Answer:

the relationship between a prism and a pyramid with equal bases and heights is the volume of the prism is three times the volume of the pyramid.

Step-by-step explanation:

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3 years ago

PLEASE HELP ME NOW ASAP I HAVE A MIN LEFT

cluponka [151]

Answer: B

Step-by-step explanation:

3 0

3 years ago

A toddler is allowed to dress himself on Mondays, Wednesdays, and Fridays. For each of his shirt, pants, and shoes, he is equall

avanturin [10]

Answer:

0.0286 = 2.86% probability that today is Monday.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Dressed correctly

Event B: Monday

Probability of being dressed correctly:

100% = 1 out of 4/7(mom dresses).

(0.5)^3 = 0.125 out of 3/7(toddler dresses himself). So

$P(A) = 0.125\frac{3}{7} + \frac{4}{7} = \frac{0.125*3 + 4}{7} = \frac{4.375}{7} = 0.625$

Probability of being dressed correctly and being Monday:

The toddler dresses himself on Monday, so (0.5)^3 = 0.125 probability of him being dressed correctly, 1/7 probability of being Monday, so:

$P(A \cap B) = 0.125\frac{1}{7} = 0.0179$

What is the probability that today is Monday?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0179}{0.625} = 0.0286$

0.0286 = 2.86% probability that today is Monday.

4 0

3 years ago

The average allowsnce money of Ernest jack David and mike is 123 per month per person. The average allowance of Ernest jack and

Evgesh-ka [11]

Answer:

Ernest gets 194 monthly allowance

Step-by-step explanation:

* Lets revise the rule of the average

- Average = The sum ÷ the total number

- Assume that the allowances money of Ernest, Jack, David and Mike

are E, J, D, M respectively

∵ The average allowance money of Ernest jack David and mike is

123 per month per person

∴ 123 = (E + J + D + M) ÷ 4

- Multiply both sides by 4

∴ E + J + D + M = 492 ⇒ (1)

∵ The average allowance of Ernest jack and David is 159 per month

per person

∴ 159 = (E + J + D) ÷ 3

- Multiply both sides by 3

∴ E + J + D = 477 ⇒ (2)

- Subtract equation(2) from equation (1) to find M

∴ M = 15

* Mike's monthly allowance is 15

∵ David's monthly allowance is 2 less than mikes

∴ D = M - 2

∵ M = 15

∴ D = 15 - 2 = 13

∴ David's monthly allowance is 13

∵ Mikes monthly allowance is 1/18 of jacks

∴ M = $\frac{1}{18}$ × J

∴ 15 = $\frac{1}{18}$ × J

- Multiply both sides by 18

∴ J = 270

* Jack's monthly allowance is 270

- Substitute the values of D , J in equation (2) to find E

∵ D = 13 and J = 270

∵ E + J + D = 477

∴ E + 270 + 13 = 477

∴ E + 283 = 477

- Subtract 283 from both sides

∴ E = 194

* Ernest's monthly allowance is 194

* Ernest gets 194 monthly allowance

4 0

3 years ago