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Tasya [4]
2 years ago
8

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

Mathematics
2 answers:
vichka [17]2 years ago
8 0
Najakkskskskjdjndndjdnjf
NNADVOKAT [17]2 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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Scores on a national math test are Normally distributed, with a mean score of 490 and a standard deviation of 50. Which test sco
alisha [4.7K]

Answer:

532

Step-by-step explanation:

The score that represents the top 20% = A score = 80%

Z score for 80% percentile = 0.842

We solve using the z score formula

z = (x-μ)/σ, where

x is the raw score = ??

μ is the population mean = 490

and σ is the population standard deviation = 50

Hence:

0.842 = x - 490/50

Cross Multiply

0.842 × 50 = x - 490

x = 0.842 × 50 + 490

x = 42.1 + 490

x = 532.1

Approximately = 532

Therefore, the test score = 532

7 0
3 years ago
Read 2 more answers
I need help<br><br> -5 = 3/4x -2<br><br> -7 + 1/2x =12<br><br> -7 -5/6x =18
skad [1K]
-4

38

-30

These are the answers
6 0
3 years ago
Which of the following are solutions to the system
Tomtit [17]

Answer:

A & B

Step-by-step explanation:

5x - 2y = 10 (1)

-2.5x + y = -5 (2)

When you multiply (2) by -2, you get (1), so there can be many solutions

To choose from the given options, plug in the values to check which ones satisfy the equation

5x - 2y = 10

A) (2,0)

5(2) - 2(0) = 10

10 = 10 (true statement)

B) (-2,-10)

5(-2) - 2(-10) = 10

-10 + 20 = 10

10 = 10 (true statement)

5 0
3 years ago
Write the equation of the line that is parallel to y=3x+1 that passes through (2,3)
FromTheMoon [43]

Answer:

Y=3X+3

Step-by-step explanation:

Y=mx+b

m=3

when x=2 and y=3 b=3

5 0
3 years ago
Mrs. Walters drove 360 miles on 25 gallons of gas. Mr. Walters drove 480 miles on 32 gallons of gas.
seraphim [82]

Answer:

34

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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