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coldgirl [10]
3 years ago
7

Tony drives 2 times the hours that Monique does. Tony and Monique drive for a total of 12 hours.

Mathematics
1 answer:
Olin [163]3 years ago
6 0

Answer:

so the answer would be he drives 8 hrs she drives 4 which equals 12

Step-by-step explanation:12 divided by 2 is six so then u take away 2 from moniques hrs and add them to tonys and u get 8 for him and 4 for her

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Any help greatly appreciated thank you
enot [183]

Answer:

Option D. n=25

Step-by-step explanation:

1) Please, see the graph in the attached file.


2) According with the graph, the break-even point for this corn stand is n=25

3 0
4 years ago
Malachi is shopping for toothbrushes. He can buy a package of 2 for $3.48 or a package of 4 for $6.60. Which is a better buy?
Maurinko [17]
Well if we multiply 3.48 times two which would make 4 toothbrushes it would be 6.96. So this means if we wanted a better deal on more toothbrushes. The answer would be the package of 4
8 0
3 years ago
Read 2 more answers
I want to take a survey of students at my university to find out what proportion like the new bus service on campus. I believe t
tatiyna

Answer:

You will need to sample at least 3108 students.

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}.

In this problem, we have that:

\pi = 0.75

99% confidence level

So \alpha = 0.01, z is the value of Z that has a pvalue of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

The margin of error is:

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

How many students will I need to survey if I want to estimate, with 99% confidence, the true proportion to within 2%?

You need a sample size of at least n.

n is found when M = 0.02. So

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

0.02 = 2.575\sqrt{\frac{0.75*0.25}{n}}

0.02\sqrt{n} = 1.115

\sqrt{n} = \frac{1.115}{0.02}

\sqrt{n} = 55.75

\sqrt{n}^{2} = (55.75)^{2}

n = 3108

You will need to sample at least 3108 students.

4 0
3 years ago
A neighborhood was given a vacant lot in the shape of a rectangle on which to build a park. The neighborhood is
erastovalidia [21]

Answer:

The answer to your question is below

Step-by-step explanation:

Formula

Triangle's Area = 1/2 bh/2

Trapezoid's area = 1/2 (b1 + b2)h

Parallelogram's area = bh

Rectangle's area = bh

Considering the formulas, we can conclude that:

a) The first choice is true, both formulas have 1/2 in.

b) The second choice is also true, both equations are the same

c) The third choice is incorrect

d) This choice is correct, the bases are added,

e) This choice is incorrect, the sides are not added.

3 0
3 years ago
Read 2 more answers
Find the value of x plssssssss
tangare [24]

Answer:

150 degrees

Step-by-step explanation:

Hi,

Since one of the angles is 30 degrees and this is a line, we know that 30 + u must equal 180 degrees.

30 + u = 180

Subtract 30 from 180 to find the value of u.

u is 150 degrees.

I hope this helps :)

4 0
3 years ago
Read 2 more answers
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