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Ainat [17]
3 years ago
5

travis drove 129 miles in 3 hours.he drove at a constant speed.how many miles did he drive in 1 hour?

Mathematics
2 answers:
Dennis_Churaev [7]3 years ago
5 0
Do one hundred and twenty nine divided by three and you will get your answer
tatiyna3 years ago
3 0

Answer:

43 miles

Step-by-step explanation:

Distance covered by Travis, d = 129 miles

Time taken by Travis, t = 3 hours

We need to find the distance covered by Travis in 1 hour. It can be calculated using unitary method.

129 miles in 3 hours

Distance covered in 1 hour is, d=\dfrac{129}{3}=43\ miles

So, Travis covered a distance of 43 miles in 1 hour. Hence, this is the required solution.

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y = 9x + (-7) should be the answer

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3 years ago
A pile of cards contains 3 diamonds,
Shtirlitz [24]

Answer:G

Step-by-step explanation:

4/9 times 2/8= 1/9

6 0
1 year ago
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A game is played with a spinner on a circle, like the minute hand on a clock. The circle is marked evenly from 0 to 100, so, for
zheka24 [161]

Answer:

The probability is 1/2

Step-by-step explanation:

The time a person is given corresponds to a uniform distribution with values between 0 and 100. The mean of this distribution is 0+100/2 = 50 and the variance is (100-0)²/12 = 833.3.

When we take 100 players we are taking 100 independent samples from this same random variable. The mean sample, lets call it X, has equal mean but the variance is equal to the variance divided by the length of the sample, hence it is 833.3/100 = 8.333.

As a consecuence of the Central Limit Theorem, the mean sample (taken from independant identically distributed random variables) has distribution Normal with parameters μ = 50, σ= 8.333. We take the standarization of X, calling it W, whose distribution is Normal Standard, in other words

W = \frac{X - \mu}{\sigma} = \frac{X - 50}{8.333} \simeq N(0,1)

The values of the cummulative distribution of the Standard Normal distribution, lets denote it \phi , are tabulated and they can be found in the attached file, We want to know when X is above 50, we can solve that by using the standarization

P(X > 50) = P(\frac{X-50}{8.33} > \frac{50-50}{8.33}) = P(W > 0) = \phi(0) = 1/2

Download pdf
8 0
3 years ago
-0.06m = 7.2 what is m?
Nata [24]
-0.06m=7.2
-0.06m/-0.06 = 7.2/-0.06
m = -120
3 0
3 years ago
Read 2 more answers
I might not respond for a little while, please don’t end the session! Need help on #3 and 4
slavikrds [6]

We have a right triangle with a 15m hypotenuse and a 8m leg. If we use x for the missing leg then the Pythagorean Theorem states that:

15^2=8^2+x^2

Then we have to solve that equation for x:

\begin{gathered} x^2=15^2-8^2=225-64 \\ x^2=161 \\ x=\sqrt[]{161} \end{gathered}

So the answer is the square root of 161.

3 0
1 year ago
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