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dusya [7]
4 years ago
10

It was 19 kilometers from the campgrounds to the lake. Joel and Mario rode their bicycles from the campgrounds to the lake and b

ack again. If the round trip ride took them 2 hours, what was their average speed in kilometers per hour
Mathematics
2 answers:
Ugo [173]4 years ago
6 0
19 kilometers per hour mark me as brainliest please

nika2105 [10]4 years ago
6 0
Joel's and Mario's average speed is 19 kilometers per hour because it took them 1 hour to get from the campgrounds to the lake, which the speed can be found by v=d/t, in which v is velocity, d is distance, and t is for time. And the fact that it took them 2 hours, their speed is constant at the rate of 19 kilometers per hour because a round trip is from the campgrounds to the lake, which is 19 kilometers, and from the lake back to the campgrounds, which is another 19 kilometers.
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An air force introductory course in electronics uses a personalized system of instruction whereby each student views a videotape
lys-0071 [83]

Answer:

See explaination

Step-by-step explanation:

We can define standard deviation in statistics as a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean of the set, while a high standard deviation indicates that the values are spread out over a wider range.

See attachment for the step by step solution

8 0
3 years ago
47 POINTS PLZZ HELP ASAP
Tju [1.3M]

Answer:

c is the answer

Step-by-step explanation:

so we know one equation

y=6x+15

we need to find the other one

24-10=14

14 miles in 2 hours

7 miles in 1 hour

y=7x+10

henry's ballon begins at 10 miles from the town and is 24 miles from the town in 2 hours

Where henry starts is 10 the y-intercept

look at the slopes

Henry: y=7x+10

Tasha: y=6x+15

Tasha starts farther away

Henry goes farther

8 0
3 years ago
A friend who works in a big city owns two cars, one small and one large. One-quarter of the time he drives the small car to work
lubasha [3.4K]

Answer:

The probability that he drove the small car is 0.318.

Step-by-step explanation:

We are given that a friend who works in a big city owns two cars, one small and one large. One-quarter of the time he drives the small car to work, and three-quarters of the time he takes the large car.

If he takes the small car, he usually has little trouble parking and so is at work on time with probability 0.7. If he takes the large car, he is on time to work with probability 0.5.

Let the Probability that he drives the small car = P(S) = \frac{1}{4} = 0.25

Probability that he drives the large car = P(L) = \frac{3}{4} = 0.75

Also, let WT = event that he is at work on time

So, Probability that he is at work on time given that he takes the small car = P(WT / S) = 0.7

Probability that he is at work on time given that he takes the large car = P(WT / L) = 0.5

Now, given that he was at work on time on a particular morning, the probability that he drove the small car is given by = P(S / WT)

We will use the concept of Bayes' Theorem for calculating above probability;

So,    P(S / WT)  =  \frac{P(S) \times P(WT/S)}{P(S) \times P(WT/S)+P(L) \times P(WT/L)}

                          =  \frac{0.25 \times 0.7}{0.25 \times 0.7+0.75 \times 0.5}

                          =  \frac{0.175}{0.55}

                          =  <u>0.318</u>

Hence, the required probability is 0.318.

8 0
3 years ago
Please help and show work
Zigmanuir [339]

Answer:

1. 23

2. 8

Step-by-step explanation:

1. 180-157 = 23

2. 15²+x²=(9+x)²

225 +x²=81+18x +x²

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144 = 18x

x = 144/18 = 8

5 0
3 years ago
Can some one help me please
GREYUIT [131]

Answer:

Acc to the exponential rule

{[A^m]} ^2

A ^m*n

Hence A raise to 3 whole raise to 2 is equal to

A raise to 3*2=6

That is A raise to 6

4 0
3 years ago
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