A student runs 100 meters in 11 seconds. What is the speed of the student? 9.1 miles per hour 16miles per hour 20.3miles per hour 24miles per hour

Answers

Answer 1

Answer: The answer is 20.3 miles per hour. First, you need to change meter and second to mile and hour. The 100 meter equals 100/1609 mile. 11 seconds equals 11/3600 hour. Then using mile number divides by hour you can get the answer.

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John goes running every morning. He can run 3 miles in 1 hour. How many miles would he be able to run in 1 and ½ hours?

Answers

Answer:

4.5 or 4 1/2 miles

Step-by-step explanation:

$\frac{3\text{ miles}}{\text{hour}}\cdot 1.5 \text{ hours}= 3\cdot 1.5=4.5$

Hope this helps!

A basketball player is shooting free throws blindfolded. He shoots in groups of 4 shots. Assume that it is equally likely that he will hit or miss a shot. Design and do a simulation to determine the probability that he will hit at least 75% of his shots within the groups. (Hint: Use coins.)

Answers

Let H represent hit and M represent miss, Then sample space

MMMM, MMMH, MMHM, MHMM, HMMM, MMHH, MHMH, HMMH, MHHM, HMHM, HHMM, MHHH, HMHH, HHMH, HHHM, HHHH

He hit at least 75% in 5 occasions.

Therefore, P(hit at least 75%) = 5/16

Answer:

Use 4 coins. Let heads = hit and tails = miss. Toss each coin and record the results in a table. Coin 1Coin 2Coin3Coin 4Set 1HHHHSet 2HTHHSet 3HHTHSet 4THTTSet 5

Repeat the coin tosses until you have recorded 50 sets of 4 tosses each. b. Count the successful outcomes—those with three or four heads. Coin 1Coin 2Coin3Coin 4SuccessSet 1HHHHxSet 2HTHHxSet 3HHTHxSet 4THTTSet 5

Step-by-step explanation:

a 75 inch boars is cut into 2 pieces one piece is 4 times the length of the other find the lengths of the 2 pieces the short piece is _inches long

Answers

Length of the long piece = 4 times the length of the short piece
Length of the short piece = 1 times the length of the short piece.
Total length of both pieces = (4 + 1) = 5 times the length of the short piece.

5 times the length of the short piece = 75 inches

The length of the short piece =75 / 5 = 15 inches

Length of the long piece = 4 times the length of the short piece = 60 inches

Check: 15 + 60 = 75 inches
yay

The shorter piece is 15 inches, and the longer piece is 60 inches.
This would be a system of equations problem. If x is the shorter piece and y is the longer piece, then your two equations would be:
x + y = 75
y = 4x
Since the second equation tells you what y is, you can substitute the y in the first equation with 4x to get the equation x + 4x = 75. x + 4x is 5x, so you'll have 5x = 75. To get x by itself, divide off the 5 on both sides. 75 ÷ 5 = 15, so x = 15. The shorter piece would be 15 inches long.
Now that you know x, go to the second equation and plug it in: y = 4·15. 4·15 is 60, so that makes the longer piece 60 inches long.
Sorry if this was confusing; I'm really bad at giving written directions :/

Simplify please! sqrt(8x^(12) y^(7))

Answers

$\sqrt{8 x^(12) y^(7) } = √(8) \sqrt{x^(12)} \sqrt{ y^(6)*y } =√(4) √(2) \sqrt{(x^(6) )^(2) } \sqrt{ (y^(3))^(2)} √(y)=2 √(2) x^(6) y^(3) √(y)$

I hope it helps you :)

When calculating simple interest, what must you do if you want to invest for months or weeks instead of years? a. Simple interest only pays yearly, so you should find another investment. b. The simple interest calculation does not use those units, so you should just calculate as normal. c. The units have changed, so the interest formula switches to I·t=P·r. d. Interest rates are annual, so you must convert the units into years

Answers

The correct answer is D.

Explanation:
Interest rates are given as an annual percentage rate. If you are investing for months or weeks, you will need to convert your units. You would divide the number of months by 12, since that would be the portion of a year it represents. For example, 3 months is 3/12 months, or 3/12 of a year. Similarly, if you were investing for weeks, you would divide by 52; if you want to invest for 6 weeks, that is 6/52 weeks, or 6/52 of a year.

Answer:

Interest rates are annual, so you must convert the units into years.

Step-by-step explanation:

edge 2020

To solve the problem using these steps, what are thdimensions of the rectangle he should draw?
2 units by 4 units
3 units by 2 units
4 units by 4 units
5 units by 6 units

Answers

Answer:

It’s c 4 units by 4 units

Step-by-step explanation:

Final answer:

The dimensions of the rectangle should be 2 units by 4 units.

Explanation:

The correlation coefficient between x and y is 0.0491, which is very low. This means that there is no linear relationship between x and y. Therefore, it is not possible to use the linear regression model to fit the data.

The other models that you can try are the quadratic, logarithmic, exponential, and power models. To find the best-fitting model, you can calculate the R-squared value for each model. The R-squared value is a measure of how well the model fits the data. The closer the R-squared value is to 1, the better the model fits the data.

Based on the R-squared values, the quadratic model is the best-fitting model. The quadratic model is:

y = -477.38 + 237.66 ln x

The dimensions of the rectangle that the student should draw are 2 units by 4 units.

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