The discriminant is the part under the sqrt in the quadratic formula
for ax²+bx+c, the discriminant is b²-4ac
if the discriminant is
less than 0, then there are non-real roots
equal to 0, then there is a double root
greater than 0, then there are 2 real roots (may be rational or irrational)
so
1x²-5x+7
b²-4ac=(-5)²-4(1)(7)=25-28=-3
less than 0 so it is non real roots
answer is D
The mean is 4.93333 (3 is repeating)
Explanation
So mean is just the sum of the numbers divided by the number of terms
So we would solve this by adding up all terms as shown here
10.6 + 4 + 4 + 6 + 4 + 1 = 29.6 = sum
Then we will divide the sum by the number of terms which is 6 in this case to get our mean as shown here
29.6 / 6 = 4.9333
The mean is 4.9333 (3 is repeating)
The formula for finding the volume of a cube is V = a^3
Where a is the length of a side.
Answer:
G(-3) = -12, and F(-3) = -10.
Step-by-step explanation:
G(n) = 3n - 3
G(-3) = 3(-3) - 3, which is equivalent to -9 - 3, or -12.
F(n) = 2n - 4
F(-3) = 2(-3) - 4, which is equivalent to -6 - 4, or -10.
