1. If x = -2, then
y = (-2)^2 - 2(-2) - 1
= 4 + 4 - 1
= 7
2. If x = 0, then
y = (0)^2 - 2(0) - 1
= 0 - 0 - 1
= -1
3. If x = 2, then
y = (2)^2 - 2(2) - 1
= 4 - 4 - 1
= -1
4. If x = 3, then
y = (3)^2 - 2(3) - 1
= 9 - 6 - 1
= 2
Hope you could understand.
If you have any query, feel free to ask.
The correct answer would be 5/2.
As this is the mixed fraction equivalent.
Hope this helps! c:
Answer:
7.1 meters
Step-by-step explanation:
Use the pythagorean theory:
10 would be the hypotenuse
7 would be one of the legs
and x (or whatever variable you'd like) would be the other leg.
7^2+x^2=10^2
49+x^2=100
subtract 49 from both sides
x^2=51
take the square root on both sides
x is approximately 7.1
If you would like to find the x-intercepts of the function f(x) = - 2 * x^2 - 3 * x + 20, you can calculate this using the following steps:
f(x) = - <span>2 * x^2 - 3 * x + 20
</span>f(x) = - (2x - 5) * (x + 4)
1. x = - 4
2. x = 5/2
(x, y) = (-4, 0)
The correct result would be (-4, 0).
