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Tasya [4]
3 years ago
8

What are the 2 criteria a linear graph must have to be proportional?

Mathematics
2 answers:
vichka [17]3 years ago
8 0
Najakkskskskjdjndndjdnjf
NNADVOKAT [17]3 years ago
5 0
A graph of a proportional relationship is a straight line that passes through the origin. The constant of a proportionality in a graph of a proportional relationship is the constant ratio of y to x (the slope of the line).
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Which expression is equivalent to
Amiraneli [1.4K]

Answer:

this is a random question so it can not be answer

Step-by-step explanation:

ask a real answer pls

4 0
3 years ago
(Please help me quickly! Timed Quiz)
miv72 [106K]

A function assigns the values. The range of the function will be between (-∞,10].

<h3>What is a Function?</h3>

A function assigns the value of each element of one set to the other specific element of another set.

The given function f(x)=10-x² is a parabolic function that is negative, therefore, will open downwards. Now, the range of the function can be found as,

f(x)=10-x²

y=10-x²

y-10 = -x²

-y+10 = x²

-y + 10 = 0

y = 10

Thus, the range of the function will be between (-∞,10].

Learn more about Function:

brainly.com/question/5245372

#SPJ1

8 0
2 years ago
The standard deviation of the sampling distribution of the sample mean is $115,000. The population standard deviation was $25,00
Zina [86]

Answer:

0.31084

Step-by-step explanation:

When given a question where by a random sample is chosen for the population, the z score formula used =

z = (x-μ)/Standard error

where x is the raw score

μ is the population mean

Standard error = σ/√n,

σ is the population standard deviation

n = number of samples

For x = $114,000, μ = $115,000, σ = 25,000, n = 100

z = (x-μ)/Standard error

= z = (x-μ)/ σ/√n

z = 114,000 - 115,000/ 25,000/√100

= -1000/25,000/10

= -1000/2500

z = -0.4

Determining the probability value from Z-Table:

P(x = 114000) = P(z = -0.4)

= 0.34458

For x = $116,000, μ = $115,000, σ = 25,000, n = 100

z = (x-μ)/Standard error

= z = (x-μ)/ σ/√n

z = 116,000 - 115,000/ 25,000/√100

= 1000/25,000/10

= 1000/2500

= 0.4

Determining the Probability value from Z-Table:

P(x = 116000) = P(z = 0.4)

= 0.65542

The probability that the sample mean selling price was between $114,000 and $116,000 is calculated as

= P(114,000< x < 116,000)

= P(-Z<x<Z)

= P(-0.4<x< 0.4

= 0.65542 - 0.34458

= 0.31084

Therefore, the probability that the sample mean selling price was between $114,000 and $116,000 is 0.31084

5 0
3 years ago
Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99​% confidenc
quester [9]

Answer: 18

Step-by-step explanation:

The formula to find the minimum sample size is given by :_

n=(\dfrac{z^*\cdot \sigma}{E})^2

, where \sigma = population standard deviation.

z*= critical z-value.

E= Margin of error.

Given : \sigma= 13

E= ± 8

We know that critical value corresponding to 99% confidence level = z*=2.576  [Using z-table]

Then, the required sample size would be :

n=(\dfrac{(2.576)\cdot (13)}{8})^2

\Rightarrow\ n=(4.186)^2

\Rightarrow\ n=17.522596\approx18 [Round to next integer.]

Hence, the required minimum sample size = 18

4 0
3 years ago
-4x-6=-5y+9
wlad13 [49]
4x-5y=-15
That’s the answer your welcome
3 0
3 years ago
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