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2 years ago

A survey asked adults how often they exercised and where they most often exercised. The results are shown in the table.

Mathematics

2 answers:

Lera25 [3.4K]2 years ago

7 0

Answer:

First blank: 46%; second blank: 54%

Step-by-step explanation:

There are a total of 92+110 = 202 people who exercise 3 times per week.

Out of these, 92 exercise outdoors; this gives us

92/202 = 0.455 ≈ 0.46 = 46%

110 of these exercise in a gym; this gives us

110/202 = 0.5446 ≈ 0.54 = 54%

Ne4ueva [31]2 years ago

3 0

Your answer is of those who excercise 3 or more times per week, about 46% usually excersise outdoors and about 54% usually excercise in a gym.

hope I helped have a great day!!

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The margin of error can be calculated with the formula:

ME = z · √(p(1-p)/n)

where:
p = sample proportion
n = sample size
z = z-score

In your case:
p = 90 / 120 = 0.75

ME = 2.58 · √(0.75·0.25/120)
= 0.10
= 10%

The margin of error will be 10%.

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Answer:the answer is B

Step-by-step explanation:

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A car rental firm has the following charges for a certain type of car: $25 per day with 100 free miles included, $0.15 per mile

Eddi Din [679]

y = 25 + 0.15x is the equation for relating the cost y to the number of miles x that you drive the car

Solution:

Let "y" be the total cost of car rental

Let "x" be the number of miles you drive the car for more than 100 miles

A car rental firm has the following charges for a certain type of car:

$25 per day with 100 free miles included, $0.15 per mile for more than 100 miles

Suppose you want to rent a car for one day, and you know you'll use it for more than 100 miles

Therefore,

Car is rented for one day

You will use it for more than 100 miles

Therefore, equation is framed as:

Total cost = $ 25 + 0.15(number of hours)

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Thus the equation for relating the cost y to the number of miles x that you drive the car

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2 years ago

kadeem and quinn both drive 25 miles. Kadeem drives at a constant speed of 50 miles an hour. Quinn drives at a constant speed of

Phantasy [73]

Answer:

Kadeem will take 0.166 h more to complete the course.

Step-by-step explanation:

The speed is the rate at which the distance changes, when the speed goes up the distance changes more quickly, therefore if the distance is the same and the speed is higher the one who will take longer is the one that has less speed. In this case the one who will take longer to drive the 25 miles is Kadeem, since he's driving at 50 mph. In order to calculate how much longer we need to calculate the time at which each of them complete the course, this is shown below:

time = distance/speed

For Kadeem:

time = 25/50 = 0.5 h

For Quinn:

time = 25/75 = 0.334 h

The difference between the is 0.5 - 0.334 = 0.166 h.

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2 years ago

Jane took a train traveling at an average speed of 60 mph from Boston, MA to Washington, D.C. The trip took 8 hours. On her way

attashe74 [19]

Answer:

6 hours and 24 min

Step-by-step explanation:

The distance is:

60*8 = 480 miles

Return trip will take:

480/75 = 6.4 hours = 6 hours and 24 min

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2 years ago