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3 years ago

What is the interquartile range of 4 5 7 9 10 14 16 24

Mathematics

2 answers:

Mama L [17]3 years ago

7 0

2's and 3's of GCF

HOpe iT hElpeED I'M cOOl

Llana [10]3 years ago

5 0

Answer:

The answer is 9

Step-by-step explanation: ? i did the the tetst or whatever and 9 is the correct answer.

YOUR WELCOME :}

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If the sum of the first and third consecutive integer is 44, what are these three integers?

emmasim [6.3K]

Hello There!

x + x + 2 = 44
2x + 2 = 44
- 2 - 2
2x = 42
x = 21.

Numbers are 21, 22 and 23.

Hope This Helps You!
Good Luck :)

4 0

2 years ago

A telephone company charges a fixed monthly rate plus a rate per minute of usage. The company charges $155 for 100 minutes of us

torisob [31]

Answer:

The answer is D.

Step-by-step explanation:

As said in the problem, we are labeling the total minutes used x and the total monthly income as y. This means that in the graph we will be making the y-axis should represent the total monthly charges, and the x-axis should represent the total minutes.

Thus the graph should go through points (100,155) and (200,245) and its slope is:

$\frac{245-155}{200-100} =0.9.$

8 0

3 years ago

Read 2 more answers

This might be hard for yall(it ok my fwiends ) ;). But there is a alot . Look at pic pwease sorry its all over the place.only 3q

horsena [70]

an really easy website for this is MathPapa algebra calculator

4 0

2 years ago

Solve the quadratic equation by factoring: 15x^2+4x-4=0

joja [24]

We can factor by grouping. To do so, we multiply the leading coefficient with the constant at the end. In other words, a times c (ax^2 + bx + c).

15*-4 = -60

Now we need to split the b term into two pieces that multiply to -60 and add to 4.

-6 and 10 will work.

Now group one part of b with the 15x^2 and the other part with -4.

(15x^2 + 10x) + (-6x - 4)

Now factor both terms.

5x(3x+2) - 2(3x+2)

3x+2 is one of our factors and 5x-2 is the other.

(3x+2)(5x-2)=0

Now just find the zeros.

3x+2 = 0
3x = -2
x = -2/3

And

5x-2 = 0
5x = 2
x = 2/5

So the answer is x = -2/3 and x = 2/5

7 0

3 years ago

A simple random sample of size nequals10 is obtained from a population with muequals68 and sigmaequals15. (a) What must be true

valentina_108 [34]

Answer:

(a) The distribution of the sample mean ( $\bar x$ ) is N (68, 4.74²).

(b) The value of $P(\bar X$ is 0.7642.

Step-by-step explanation:

A random sample of size n = 10 is selected from a population.

Let the population be made up of the random variable X.

The mean and standard deviation of X are:

$\mu=68\\\sigma=15$

(a)

According to the Central Limit Theorem if we have a population with mean μ and standard deviation σ and we take appropriately huge random samples (n ≥ 30) from the population with replacement, then the distribution of the sample mean will be approximately normally distributed.

Since the sample selected is not large, i.e. n = 10 < 30, for the distribution of the sample mean will be approximately normally distributed, the population from which the sample is selected must be normally distributed.

Then, the mean of the distribution of the sample mean is given by,

$\mu_{\bar x}=\mu=68$