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Neporo4naja [7]

2 years ago

11

A rubber ball is thrown against the pavement and bounces into the air. If the ball is airborne for 2.5 seconds, how long after i

t bounces upward does the ball reach its maximum height?

1 answer:

miv72 [106K]2 years ago

3 0

Answer:

Step-by-step explanation:

1/2 * 2.5

= 1.25 seconds

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Jeff gave 1/4 of a sum of money to his wife. Then he divided the remainder equally among his 4 children.

Semenov [28]

Answer:

A) The fraction of sum of money did each child receive is $\frac{3 x}{16}$

B) The sum of money did Jeff have $ 3200

Step-by-step explanation:

Given as :

Let The sum of money did Jeff have = $ x

The fraction of money did Jeff's wife get = $\frac{1}{4}$ of $ x

The remaining money Jeff will have = $ x - $\frac{1}{4}$ of $ x

I.e The remaining money Jeff will have = $\frac{4 x - x}{4}$

= $\frac{3 x}{4}$

A ) The remaining amount of money is divided equally among 4 children

So, The fraction of sum of money did each child receive = $\frac{\frac{3 x}{4}}{4}$

I.e The fraction of sum of money did each child receive = $\frac{3 x}{16}$

B ) If each child will receive $ 600

∴, $\frac{3 x}{16}$ = $ 600

Or, 3 x = $ 600 × 16

Or, 3 x = $ 9600

∴ x = $\frac{9600}{3}$

I.e x = $ 3200

So, The sum of money did Jeff have $ 3200

Hence ,

A) The fraction of sum of money did each child receive is $\frac{3 x}{16}$

B) The sum of money did Jeff have $ 3200 Answer

8 0

3 years ago

A survey of 1,000 men and women asked, "Do you earn over $50,000 per year?" The table below shows the responses for males and fe

Effectus [21]

Based on the data, it is found that "being female" and "earning over $50,000" are not independent events. the correct answer is option D.

<h3>What is probability?</h3>

Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

Two events, A and B are independent, if:

P(A $\cap$ B) = P(A) P(B)

In this problem, the events are:

Event A: Being female.
Event B: Earning over $50,000.

Out of the 1000 people, 450 are female, hence:

P(A) = $\dfrac{450}{1000}$ = 0.45

850 earn over $50,000, hence:

P(B) = $\dfrac{850}{1000}$ = 0.85

375 are women who earn over $50,000, hence:

P(A $\cap$ B) = $\dfrac{375}{1000}$ = 0.375

The multiplication of the probabilities is:

P(A $\cap$ B) = 0.45(0.85} = 0.3825

Therefore based on the data, it is found that "being female" and "earning over $50,000" are not independent events. the correct answer is option D.

To know more about probability follow

brainly.com/question/24756209

#SPJ1

3 0

2 years ago

A120<br> B108<br> C135<br> D144<br><br> Please help me

Sloan [31]

Answer:

B - 108

Step-by-step explanation:

A regular pentagon is 540 degrees. Divide 540 by 5 (since there are five sides) which equals 108 degrees.

8 0

2 years ago

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Jen rode her bike 1/5 of a mile to her friend's house. It took her 5 minutes to get there. What was Jen's speed?

liubo4ka [24]

Answer:

2.4 miles per hours

Step-by-step explanation:

if she traveled 1/5 of a mile in order for you ro do this you must first teun it into a full mile so times it by the required amount to equal one which would be five.

1/5 of a mile x 5 = 1

you must do this also to the time

5 minutes x 5 = 25 minutes

it takes her 25 minutes to travel one mile so because miles per hour is a ration you must find the amount in hours and not minutes.

So you must divide the hour equivilent by 25 minutes.

so if 1 hour equals 60 minutes

60 divided by 25 = 2.4

that is how you find miles per hour

6 0

2 years ago

Your father gave you $8.82 to buy a present. This covered 7/9 of the cost. How much did the present

Marysya12 [62]

Answer:

$6.86

Step-by-step explanation:

4 0

2 years ago

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