So for number one, you would have to divide the number by the one being multiplied. I’ll do the first one and you can do the second one, comment if you need help.
(4)*_=-12 —> -12/4 = -3
Check : -3*4 = -12
The answer would be -3.
For the second one, multiply all the numbers first and find the actual answer.
(4)*(-7)*(-1) —> 4 * -7 = -28 —> -28 * -1 = 28
Then multiply their answers.
Evangelina : (-28)*(-1) = 28
Josh : (4)*(7) = 28
Now check who has the right answer and explain why.
For number three, use the letters and plug in the values that are being given to you.
e —> -e
-e * f = -15
-e * g = 6
f * g = -10
Now solve from there!
I really hope I helped, comment if you have any questions:)
Answer:
I can't draw the graph for you here, but the y intercept is 3, and the slope is -1.
Step-by-step explanation:
First you plot a point on the y axis at 0,-3
Then you want to do a rise over run, doing -1,1 until you get enough points to graph the line.
Answer:
Option (a) 
Step-by-step explanation:
The given expression is :
We need to rewrite the sum using sigma notation.
The numerator is 3 in all terms.
At denominator, in first term (1)(2), in second term (2)(3) and so on.
A general term for the denominator is k(k+1).
Sigma notation is :
Hence, the correct option is (A).
There are 4 of each card
4 aces, 4 jacks
probablity=desired outcomes/total possible oucomes
4+4=8
8 desired outcomes
52 total cards
probablity=8/52=2/13
the probablity is 2/13
