When you roll two numbers you have four kinds of outcomes: EE, EO, OE, OO (where E = even, O = odd).
You get an even sum only if you sum two numbers that are both even or both odd, therefore the outcomes wanted are two: EE and OO.
Therefore:
P(sum is even) = 2 / 4 = 0.5
Hence, there is a 50% probability that, when you roll two numbers, their sum will be even.
It's a lot like solving equations.
3b-7 < 32
Add 7 to each side.
3b < 39
Divide by 3 on each side.
b < 13
Hope this helps :)
Answer:
Step-by-step explanation:
The homework grade, to the nearest integer, for a student with a test grade of 68 is 69.
Step-by-step explanation:
The general form of the linear regression equation is:
Here,
y = dependent variable = test grade
x = independent variable = homework grade
a = intercept
b = slope
Answer:
He scored points.
Step-by-step explanation:
Given:
Number of points for a correct answer =
Number of points scored for an incorrect answer =
Therefore, for 35 correct answers, points scored =
Now, for 32 incorrect answers, points scored =
Therefore, net number of points scored by Nathan is:
Therefore, Nathan scored points.
Well here is the thing is the answer is 10