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hjlf
3 years ago
13

students are encouraged to exercise at least 2 1/2 hours a week. Hector exercises about the same number of hours each week. duri

ng a 4 week period he exercises 11 1/2 hours. how many hours does he exercise per week?
Mathematics
1 answer:
Natasha2012 [34]3 years ago
6 0

Answer:

On average, he exercises 2.875 hours per week.

Step-by-step explanation:

Just do 11 1/2 (11.5) divided by 4, and you get your answer of 2.875 hours per week.

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Find the unit rate. round to the nearest hundred if necessary
Lina20 [59]
360÷60=60 60 miles per hour    6840÷45=152 152 costumes per day   45.5÷13=3.5 rounded to nearest hundred= 4 4 meters per second    $7.40<span>÷5=$1.48 rounded to nearest hundred = 1 $1 per pound</span>
3 0
3 years ago
A family went to a restaurant for dinner. The bill before tax and tip was $52.78. The sales tax is
Sergeeva-Olga [200]

Answer:

B

Step-by-step explanation:

52.78×6.5%=3.43

52.78×18%=9.50

52.78+3.43+9.50=65.71

4 0
2 years ago
A sphere and cylinder have the same radius and height. The volume of the cylinder is 30m^3. What is the volume of the sphere?
Aleonysh [2.5K]

Answer:

15 is the volume I hope I helped

5 0
3 years ago
You want to buy a trampoline. You found one online that has a circumference of 6.28 yards. What is the area?
gizmo_the_mogwai [7]

The area of the trampoline  is mathematically given as

a = 3.14

<h3>What is the area?</h3>

Question Parameters:

You found one online that has a circumference of 6.28 yards

Generally, the equation for the Circumference   is mathematically given as

C = 2*pi*r

Thererfore

6.28 = 2*3.14*r

r = (6.28)/(6.28)

r = 1

In conclusion, where radius is

a= pi*r^2

a = 3.14*1^2

a = 3.14

Read more about  Arithmetic

brainly.com/question/22568180

7 0
2 years ago
Read 2 more answers
Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning.
Alborosie
Assume that the rule connecting height of the candle to time is a linear one.  If you do, then we have to find the equation of this line, and then use this equation to predict the height of the candle after 11 hours.

Two points on this line are (6,17.4) and (23, 7.2).  The slope is thus
         7.2-17.4           -6
m = ---------------  =  -----------  or   -3/5.
           23-6                 10

Find the equation of the line.  I'm going to use the slope-intercept formula:

y = mx + b  =>   7.2 = (-3/5)(23) + b.  Solving for b,   b = 21.

Now    we know that y = (-3/5)x + 21

Let x=11 to predict the height of the candle at that time.

y = (-3/5)(11) + 21 = 14.4 inches  (answer)
7 0
3 years ago
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