Answer:
The value is 
Step-by-step explanation:
From the question we are told that
The mean is 
Given that 20% of the values are greater than 70, the z-score to the right of the curve corresponding to 20% (0.2) of the values is
Generally this z-score is mathematically represented as
Here x = 70
So
=>
Answer:
y=2x+7
Step-by-step explanation:
you would substitute so x=-2 and y=3
All lines parralel always have the same x so
y=2x-c (c means crossing point of y)
then substitute
3=(2x-2)-c
3=-4-c
c= +7
so just put in the equation and the answer is:
y=2x+7
Hope this helps!!
Answer: 2
(-4,1)(1,-2)
M=-2+4/1-1
=2/0
=2
Answer(s):
If you are asking for the equation, it's 9(x+4)=2
However, if you're asking for the value of x as well, it's -34/9
Step by Step:
1) First we must find the equation. In your question, the unknown number is x. Therefore we can know that "the sum of a number and 4" is (x+4). Since we are multiplying this sum by 9, we can put the 9 in front of this expression to multiply it--getting 9(x+4). And since we know it "is 2" we can say that 9(x+4)=2.
2) Now, we have to solve the equation, 9(x+4) = 2
3) We can start by distributing, 9x+36 = 2
4) Now let's move 36 to the right by subtracting from both sides, 9x = -34
5) To isolate x, let's divide both sides by 9, x = -34/9
6) Our fraction answer can't be simplified, so we get x = -34/9
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