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2 years ago

College algebra chapter 3

Mathematics

1 answer:

Harman [31]2 years ago

5 0

Equation given: $S = 16t^2$

S: distance fallen --> 1279 ft
t: time taken for the distance fallen

Solve:

$S = 16t^2\\1279=16t^2\\t^2 = 79.93\\t=8.9$

Thus it took 8 seconds for the thing to fall from the top

Hope that helps!

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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

Complete the pattern 5, 9, 17, 33, ____, 129

k0ka [10]

The answer should be 65. The number be added is doubled. +4,+8, +16, +32 So 32+33=65 65+64=129

7 0

2 years ago

If the population of

Dahasolnce [82]

It would take 32 minutes.

1,000 * 32 = 32,000

3 0

1 year ago

A gardener uses a coordinate grid to design a new garden. The gardener uses polygon WXYZ on the grid to represent the garden. Th

ValentinkaMS [17]

Answer:

A square

36 square yard.

Step-by-step explanation:

Given the following information:

W(3,3), X(-3,3), Y(-3,-3), and Z(3,-3)

So we need to graph those vertices and connect them in order.

(please have a look at the attached photo)

From the graph, it clear that the shape of the garden is a square.

Then, we need to calculate the length of the four sides

Find the length of the side YZ.

The length of side YZ = 3 + 3 = 6 yards because point Y and Z are on the same line y = -3 so we just need to find the distance between their x coordinate

Find the length of the side WZ.

The length of side WZ = 3 + 3 = 6 yards because point W and Z are on the same line x = 3 so we just need to find the distance between their y coordinate

=> the area of the square WXYZ:

= YZ*WZ

= 6*6

= 36 square yard.

7 0

3 years ago

Ben earns an annual income of $12,800 a year. The income tax he has to pay is 15%. What is the amount of income tax in dollars a

kirill115 [55]

Answer:

920

Explanation:

Find

12800

100

12800

920

Step-by-step explanation:

8 0

3 years ago

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