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aleksandr82 [10.1K]
3 years ago
5

What number is the arrow pointing at?​

Mathematics
2 answers:
Licemer1 [7]3 years ago
5 0

Answer:

540 is the correct answer. Each mark is an increase of 20.

zalisa [80]3 years ago
4 0
540. the graph is counting up by 20’s. two marks to the right of 500 would be 540.
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What is the slope of a line passing through (1,9) and (-3,16) ?
timurjin [86]

Answer:

slope= -7/4

Step-by-step explanation:

y2-y1/x2-x1

16-9/-3-1

7 0
3 years ago
If two positive fractions are less than 1, why is their product also less than 1?
igor_vitrenko [27]
The product of two positive fractions are also less than one because you are multiplying a number which is already less than 1.

For example.

1/ 2 = is 50% of a whole.

When you multiply 1/2 by 1/2 you do not get the 100% of the whole because you are only getting 50% of the 50% of the whole, which in turn is equivalent to 25% of the whole.

1/2 * 1/2 = 1/4 of the whole.

The only time you can get a result of 1 and above where two fractions are less than 1 is when you perform addition of these fractions.

1/2 + 1/2 = 1 - ALL CREDITS GO TO @TASKMASTERS!
4 0
3 years ago
Read 2 more answers
5x-60 = -60 +2x +3x<br> how many solutions does the equation have
xeze [42]

Answer:

infinitely \: many \: solution

Step-by-step explanation:

1) Cancle -60 on both sides.

5x = 2x + 3x

2) Simplify 2x + 3x to 5x.

5x = 5x

3) Since both sides are equal, there are infinitely many solutions.

infinietly \: many \: solution

<u>Therefor</u><u>,</u><u> </u><u>this</u><u> </u><u>equation</u><u> </u><u>has</u><u> </u><u>infinitely</u><u> </u><u>many</u><u> </u><u>solutions</u><u>.</u>

5 0
3 years ago
we believe that 42% of freshmen do not visit their counselors regularly. For this year, you would like to obtain a new sample to
Maksim231197 [3]

Answer:

A sample of 1077 is required.

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 of:

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

42% of freshmen do not visit their counselors regularly.

This means that \pi = 0.42

98% confidence level

So \alpha = 0.02, z is the value of Z that has a pvalue of 1 - \frac{0.02}{2} = 0.99, so Z = 2.327.

How large of a sample size is required?

A sample size of n is required, and n is found when M = 0.035. So

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

0.035 = 2.327\sqrt{\frac{0.42*0.58}{n}}

0.035\sqrt{n} = 2.327\sqrt{0.42*0.58}

\sqrt{n} = \frac{2.327\sqrt{0.42*0.58}}{0.035}

(\sqrt{n})^2 = (\frac{2.327\sqrt{0.42*0.58}}{0.035})^2

n = 1076.8

Rounding up:

A sample of 1077 is required.

3 0
3 years ago
Help please help please
mestny [16]

Answer:

12.57 in⠀⠀⠀⠀⠀

5 0
3 years ago
Read 2 more answers
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