Step-by-step explanation:
n(U)= 150
n(F)=80
n(M)=70
n(MuN) complement= 30
Answer:
Step-by-step explanation:
The points/decimals do not line up, therefore you need to correctly line them up so it should be.
2.80
+ 1.64
which would be 4.24
Answer:
its 8,9,13,23 or b
Step-by-step explanation:
toke the test
Answer:
Step-by-step explanation:
Unless we set x^2 + 8x + 15 equal to zero, we don't have an equation to be solved. I will assume that the problem is actually x^2 + 8x + 15 = 0.
The coefficients of this quadratic are {1, 8, 15}, and so the "discriminant" b^2 - 4ac is (8)^2 - 4(1)(15), or 4. Because the discriminant is positive, we know that there are two real, unequal roots.
Continuing with the quadratic formula and knowing that the discriminant is 4, we get:
-8 ± √4 -8 ± 2
x = ---------------- = --------------- , or x = -2 ± 1: x = -3 and x = -5
2 2
