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
Gnoma [55]
2 years ago
6

Please help. Algebra.

Mathematics
1 answer:
mr Goodwill [35]2 years ago
4 0

Answer:  m= -1/2

Step-by-step explanation:

Hope the gif loads to help you but if not thats the answer.

You might be interested in
Eliza volunteers at a nearby aquarium
pishuonlain [190]
It is 3٫100 miles right
8 0
2 years ago
What is the answer ?
Anuta_ua [19.1K]

Answer:

x= y+2/3+4

Step-by-step explanation:

5 0
3 years ago
Estimate the minimum and maximum ages for typical textbooks currently used in college courses, then use the range rule of thumb
Maksim231197 [3]

Answer:

n=(\frac{1.64(4)}{0.25})^2 =688.537 \approx 689

So the answer for this case would be n=689 rounded up to the nearest integer

Step-by-step explanation:

Assuming this complete question: "Suppose that the minimum and maximum ages for typical textbooks currently used in college courses are 0 and 8 years. Use the range rule of thumb to estimate the standard deviation.

Estimate the minimum and maximum ages for typical textbooks currently used in college courses, then use the range rule of thumb to estimate the standard deviation. Next, find the size of the sample required to estimate the mean age (in years) of textbooks currently used in college courses. Use a 90% confidence level and assume that the sample mean will be in error by no more than 0.25 year."

Solution for the problem

First we need ti find the estimation for the standard deviation using the Rule of thumb, with the following formula:

s \approx \frac{R}{4}

Where R is the range defined as :

R = Max - Min = 8-0 = 8

So then the deviation would be approximately:

s \approx 4

Important concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error (ME) is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}    (1)

And on this case we have that ME =\pm 0.25 and we are interested in order to find the value of n, if we solve n from equation (1) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (2)

We can assume that the estimator for the population deviation from the rule of thumb is \hat \sigma = s= 4

The critical value for 90% of confidence interval now can be founded using the normal distribution. And in excel we can use this formla to find it:"=-NORM.INV(0.05;0;1)", and we got z_{\alpha/2}=1.64, replacing into formula (2) we got:

n=(\frac{1.64(4)}{0.25})^2 =688.537 \approx 689

So the answer for this case would be n=689 rounded up to the nearest integer

6 0
3 years ago
2 cups is to 10 cans as 14 cups is to how many cans
vekshin1

Answer: 80 cans

Step-by-step explanation:

The ratio between cups to cans is 1:5

If we have 14 cups, multiply that by 5 and it is equal to 80 cans

6 0
3 years ago
Find the equation of the line that passes through points A and
scoray [572]

Answer:

y = 2x - 1 is the required equation

Step-by-step explanation:

slope(m) = (3-7)/(2-4)

m = -4/(-2)

so, m = 2

Now,

y = mx + b

or, y = 2x + b

so, 3 = 2*2 + b

or, 3 = 4 + b

so, b = -1

equation would be y = 2x - 1

6 0
2 years ago
Read 2 more answers
Other questions:
  • Find the GCF of 18a, 20ab,<br> and bab.
    13·1 answer
  • What is cross multiplication
    5·2 answers
  • Function P is a linear function with a Y-intercept of 5.Function Q is defined by the equation Y=-1/3x +4.What statement must be
    10·1 answer
  • A sequence is defined by the equations and . What is the fifth term in the sequence?
    6·1 answer
  • You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Y
    7·1 answer
  • Which equation has the same solution as x^2+8x-33 =0 ?
    12·1 answer
  • Graph these transformations. ( click on the picture )
    13·1 answer
  • Sally is 12 years and 7 months old. Her pet cat is 4.260 days old. Who is older? is older. She is old.​
    8·1 answer
  • Which of these sequence could be an image of segment AB after a sequence of isometric transformation? Check all that apply
    10·1 answer
  • The point (-4,8) is the mid point of the line joining the points (a+b,3b) and (-2a,2b-3a) find the values of a and b
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!