Answer: 1, -1
Step-by-step explanation: This is a difference of squares when factored,
(x+1)(x-1)
Let's check using FOIL(First, outside, inside, last)
x * x =x^2
1 *x =x
x * (-1) =-x
1* -1 =-1
so x^2 +x -x -1
=x^2 -1
Answer:
f(3) = 7
Step-by-step explanation:
Substitute x = 3 into f(x) , that is
f(3) = 4(3) - 5 = 12 - 5 = 7
(female members/total members) * 100
12/25 = 0.48.....0.48 * 100 = 48%
Answer:
The angle of x is 65°
Step-by-step explanation:
In an triangle, according to the triangle postulate
"The sum of all the three angle will be equal to 180 degrees"
Step 1: Add together the known angles.
68° + 47° = 115°
Step 2: Subtract the sum from 180°.
180° - 115° = 65°
Other wise
68° + 47° +x = 180°
115° +x = 180°
x = 180° - 115°
x = 65°
Answer:
Step-by-step explanation:
Using D / T = R, we have
(3/8)miles / (3/5) hrs =
3/8 x 5/3 =
5/8 mph