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k0ka [10]
2 years ago
5

Arianna cycles for 3 hours at a speed of 40 mph. what distance did she travel

Mathematics
2 answers:
Sergeu [11.5K]2 years ago
7 0

Answer:

Q) arianna cycles for 3 hours at a speed of 40 mph. what distance did she travel

Ans) 120

Step-by-step explanation:

she goes 40 mph.

40 mph for the first hour,

40 mph for the second,

40 mph for the third

It means 3 * 40 mph = 120 miles

Hope this helps.. <em>!</em>

Phantasy [73]2 years ago
5 0

40 × 3 = 120 miles

that's it

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In the equation 5 + 3x - 7 = 10, what are the like terms?
WITCHER [35]

Answer:

5 , -7 , 10

Step-by-step explanation:

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2 years ago
7.1.35-T Question Help You are the operations manager for an airline and you are considering a higher fare level for passengers
shusha [124]

Answer:

You must survey 784 air passengers.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

Assume that nothing is known about the percentage of passengers who prefer aisle seats.

This means that \pi = 0.5, which is when the largest sample size will be needed.

Within 3.5 percentage points of the true population percentage.

We have to find n for which M = 0.035. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.035 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.035\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.035}

(\sqrt{n})^2 = (\frac{1.96*0.5}{0.035})^2

n = 784

You must survey 784 air passengers.

6 0
2 years ago
Deanna has $150.00 in her account.At the end of each week, she plans to take $15.00 out of her account for her spending money. W
AlexFokin [52]

Let the balance = Y and the number of weeks = x

She takes out 15 per week, so multiply 15 by x ( the number of weeks) to get 15x.

You would then want to subtract that from the amount she started with in her account.

The equation becomes: Y = 150 - 15x

3 0
3 years ago
I am not getting this math?<br>​
gladu [14]

Answer:

100

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
I need help on this one please
saw5 [17]

Answer:

B

Step-by-step explanation:

When looking at the number line, we can see the distance between A and B is one unit

A |-2| + |-1| = 2+1 =3    That is not 1 unit

B 2-1  =1  that is  1 unit

C  -2 + -1 = -3  that is not 1 unit

D  |-1| - (-2) = 1 + 2 =3  that is not 1 unit

Even though it says all expressions,  there is only 1 that shows a distance of 1 unit

6 0
3 years ago
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