1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Yuliya22 [10]
3 years ago
13

So if in my question... 8=7, 9=7.5, and 10=8...what does 40 equal?

Mathematics
2 answers:
kherson [118]3 years ago
3 0
It equals 25 because it is going up .5 for each number
Andrews [41]3 years ago
3 0

Answer:

25

Step-by-step explanation:

if u wouldnt mind giving me brainliest, im just tryna rank up

You might be interested in
Three prime numbers that can be multiplied to get 825
Leona [35]

Answer:

Prime factorization: 825 = 3 × 5 × 5 × 11, which can be written 825 = 3 × 5² × 11.

Step-by-step explanation:

Hope this helps!

5 0
2 years ago
Read 2 more answers
A candidate for a US Representative seat from Indiana hires a polling firm to gauge her percentage of support among voters in he
UkoKoshka [18]

Answer:

a) The minimum sample size is 601.

b) The minimum sample size is 2401.

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}}

For this problem, we have that:

We dont know the true proportion, so we use \pi = 0.5, which is when we are are going to need the largest sample size.

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.

a. If a 95% confidence interval with a margin of error of no more than 0.04 is desired, give a close estimate of the minimum sample size that will guarantee that the desired margin of error is achieved. (Remember to round up any result, if necessary.)

This is n for which M = 0.04. So

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

0.04 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.04\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.04}

(\sqrt{n})^2 = (\frac{1.96*0.5}{0.04})^2

n = 600.25

Rounding up

The minimum sample size is 601.

b. If a 95% confidence interval with a margin of error of no more than 0.02 is desired, give a close estimate of the minimum sample size necessary to achieve the desired margin of error.

Now we want n for which M = 0.02. So

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

0.02 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.02\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.02}

(\sqrt{n})^2 = (\frac{1.96*0.5}{0.02})^2

n = 2401

The minimum sample size is 2401.

4 0
3 years ago
Can some one help I forgot how to do 0.6 divided by 12.9. Plzzzzz anyone hellppppppp
Katyanochek1 [597]

The answer to your question is 0.046511627906

Explanation:

Simple, use a calculator to answer your question.

3 0
2 years ago
PLEASE HELP ME WILL MARK BRAINLIEST
stich3 [128]

Answer:

PLEASE HELP ME WILL MARK BRAINLIEST

Step-by-step explanation:

5 0
3 years ago
If an item that originally cost $13 is increased to $19, what is the percentage of increase in the item?
Evgesh-ka [11]
Original cost (OC) = $13

New cost (NC) = $19

Percentage increase = \frac{NC - OC}{OC} *100 =  \frac{19 - 13}{13} * 100 =  \frac{6}{13} * 100

= 46.15 %
4 0
3 years ago
Other questions:
  • Geometry riddle why wouldn’t the man stand in line to step on the scale
    7·2 answers
  • Write the number four million, two hundred thirty, seven thousand, three hundred and four hundredths
    9·1 answer
  • Find the measures of the angles of a right triangle where one of the two acute angles measure 8 times the otehr.
    8·1 answer
  • Which relationship describes angles 1 and 2?
    9·1 answer
  • In a 4-digit perfect square, the first two digits are the same, and the last two digits are also the same. What is the value of
    11·1 answer
  • Figure ABCD is a kite. Find the<br> value of x.
    8·1 answer
  • Simplify the expression:<br> (x^3y^n/z^m+1)^k
    11·1 answer
  • How to find x(x-2)&lt;0
    13·2 answers
  • Which fraction shows a correct way to set up the slope formula for the line that passes through the points (4, -6) and (-2, 1)?
    12·2 answers
  • estaba previsto destinar 3/14 de partes de una finca a plazas de aparcamiento pero finalmente han destinado 3/4 de lo previsto a
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!