What is the correlation? *

Mathematics

2 answers:

Ostrovityanka [42]4 years ago

6 0

Answer:

positive because the graph goes upward.

Step-by-step explanation:

Delicious77 [7]4 years ago

5 0

Answer: Positive correlation

The points trend upward as you read from left to right. As the hours spent studying goes up, the score on the final exam goes up. We can draw a straight line that tries to go through or near all of the points shown. This line will have a positive slope.

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Is a + b rational or irrational

enyata [817]

Answer and Step-by-step explanation:

It depends on the numbers that are inputted for a and b.

If the numbers that are inputted for both a and b are rational, then a + b would be rational.

If the numbers that are inputted for both a and b are irrational, then a + b would be irrational.

If one of the variables is rational and the other is irrational, then a + b would be irrational.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

7 0

3 years ago

For ΔABC, ∠A = 8x - 10, ∠B = 10x - 40, and ∠C = 3x + 20. If ΔABC undergoes a dilation by a scale factor of 1 2 to create ΔA'B'C'

Sholpan [36]

Answer: It does not confirm that ΔABC∼ΔA'B'C by the AA criterion as the measure of angle B is negative which is not possible.

Step-by-step explanation:

Since we have given that

In ΔABC,

∠A = 8x - 10, ∠B = 10x - 40, and ∠C = 3x + 20

In ΔA'B'C',

∠A' = 6x + 10, ∠B' = 70 - x, and ∠C' = 10x 2

Since ΔABC gets a dilation by a scale factor of $\dfrac{1}{2}$

So, it becomes,

$\dfrac{\angle A}{\angle A'}=\dfrac{1}{2}\\\\\dfrac{8x-10}{6x+10}=\dfrac{1}{2}\\\\2(8x-10)=6x+10\\\\16x-20=6x+10\\\\16x-6x=10+20\\\\10x=30\\\\x=\dfrac{30}{10}=3$