A race car driving under the caution flag at 40 feet per second begins to accelerate at a constant rate after

Mathematics

1 answer:

vitfil [10]3 years ago

7 0

Chelsea vs. Atlético Madrid, Champions League: Confirmed lineups; how to watch

You might be interested in

81 to the power of 3/2

ruslelena [56]

Answer: 265720.5
.
.
.
(81^3) / 2 = 265720.5

4 0

3 years ago

The resting heart rates for 80 women aged 46–55 in a simple random sample are normally distributed, with a mean of 71 beats per

My name is Ann [436]

Given:
Confidence level = 90%
mean = 71 beats per minute
standard deviation = 6 beats per minute

margin of error = z * δ / √n

where : δ - population of the standard deviation, n is the sample size ; z is the appropriate z value.

90% confidence level = 1.645 in z-value

margin of error = 1.645 * (6/√80) = 1.645 * (6/8.94) = 1.645 * 0.671 = 1.104

The margin of error is 1.10

6 0

3 years ago

Read 2 more answers

A rectangle has vertices W(2,3), X(2,6), Y(7,6), and Z(7,3).

KiRa [710]

Answer:

Step-by-step explanation:

A rectangle has 4 sides.

2 of them are lengths and 3 of them are widths.

We can simply use coordinate geometry (without graphing) to find side lengths of the rectangle. We will use Distance Formula.

We can find all the 4 lengths by using Distance Formula from points:

W and X

X and Y

Y and Z

W and Z

Note, that we don't need to find all 4 of them individually, because 2 are lengths (same) and 2 are widths (same). Thus we can find

Distance of WX, which would be same as distance of YZ

also

Distance of XY which would be same as distance of WZ

Note: Distance Formula is $D=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}$ where D is the distance, x_1, y_1 is the first coordinate points and x_2,y_2 is the second coordinate points