Answer:
Helene is right
Step-by-step explanation:
Mathematically, the expected values is defined as the sum of all the possible outcomes that an event can have times the probality of the respective outcome:
x = ∑ p *i,
where x is the expected value, i represents every outcome that can occur, and p is the probability of said outcome.
Now, for the case of a dice, the expected value would be:
x = 1 * 
+ 2 * + 3 * + 4 * + 5* + 6 * ,
as every outcome has the same chance of happenning. Solving we get that:
x= *(1 +2 +3 +4+5+6) = * 21 = 3.5
Helene is right.
80%. 32 / 40 is .8 Converting .8 to a percent makes it 80%
Answer:
B is our answer 12.56
When finding area for circles we do
radius x radius x pi
Since we don't have the radius in the problem we have to figure it out but it wont be so hard knowing that the radius is half of the diameter so 4 ÷ 2 = 2 so 2 is our radius now we need tp square it in easier words multiply by itself so
2 x 2 = 4 then we just do 4 x pi!
So 4 x 3.14 = 12.56 So our answer is 12.56
Hope this helps!
Hello,
y=x²+10x+11
y=x²+x-7
==>x²+10x+11=x²+x-7
==>9x=-18
==>x=-2
Sol={(-2,-5)}
Answer:
a) 3(1.2x - 8) or 3.6x - 24
b)
3(1.2x - 8) = 12
1.2x - 8 = 4
1.2x = 12
x = 12/1.2
= 10
