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Kisachek [45]
3 years ago
5

Set A= {0,3,8}

Mathematics
1 answer:
AleksandrR [38]3 years ago
3 0
I think the answer will be whole numbers
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A car travels along a straight stretch of road. It proceeds for 16.2 mi at 57 mi/h, then 24.6 mi at 44 mi/h, and finally 45.1 mi
LekaFEV [45]

Answer:

The average velocity the entire trip was 43.25 mi/h

Step-by-step explanation:

In this case we have to calculate an average based on the miles traveled. First we have to calculate the total of miles traveled, then calculate the portion of the total travel of each and with this calculate the average speed during the trip. First the total miles traveled:

TotalMiles=16.2+24.6+45.1=85.9

Now the percentages:

At 57 mi/h were \frac{16.2}{85.9}=0.19

At 44 mi/h were \frac{24.6}{85.9}=0.29

At 37.8 mi/h were \frac{45.1}{85.9}=0.52

Now multiplying the speed by the portion and summing them we can have the average velocity:

57*0.19+44*0.29+37.8*0.52=43.25

The average velocity the entire trip was 43.25 mi/h

5 0
2 years ago
Determine the perimeter of a rectangle that is 10 inches long and 9 inches wide.<br> inches
Alex777 [14]

Answer:

38

Step-by-step explanation:

2(l + b)

2(10 + 9)

2(19)

2*19

38

4 0
2 years ago
Read 2 more answers
2937 x 28377 ? Plz help
Mice21 [21]

Answer:

83343249

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please help with this and explain how to do it, I'll give 15 points
MrRissso [65]

Answer:

Option (4).

Step-by-step explanation:

Outer diameter of the hollow metallic ball = 10 centimeters

Outer radius of this ball = \frac{10}{2} = 5 cm

Volume of the outer ball V_{1} = \frac{4}{3}\pi (r)^3

                                         = \frac{4}{3}\pi (5)^3

Inner radius of the hollow metallic ball = (5 - 1) = 4 cm

Volume of the inner hollow ball V_{2} = \frac{4}{3}\pi (4)^3

Volume of the metal used in the metallic ball = V_{1}-V_{2}

                                                                           = \frac{4}{3}\pi (5)^3-\frac{4}{3}\pi (4)^{3}

                                                                           = \frac{4}{3}\pi [(5)^3-(4)^3]

Therefore, expression given in option (4) will be used to measure the volume of the hollow metallic ball.

8 0
2 years ago
Evaluate the expression. 34⋅23
Alex17521 [72]

Answer:

784

Step-by-step explanation:

(30+4)(23+3)

7 0
3 years ago
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