Answer: x^2+3x-5
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Work Shown:
(f+g)(x) = f(x) + g(x)
(f+g)(x) = [ f(x) ] + [ g(x) ]
(f+g)(x) = [ 3x+1 ] + [ x^2-6 ]
(f+g)(x) = 3x+1 + x^2-6
(f+g)(x) = x^2 + 3x + (1 - 6)
(f+g)(x) = x^2 + 3x - 5
Answer:
{ 0, -4}
Step-by-step explanation:
2x - 5•(-x -4) = 20
7x = 0
x = 0
y = -x-4
y = -(-0 , -4)
Answer:
15 gallons
Step-by-step explanation:
If x is the gallons of 30% butterfat cream, and y is the gallons of 3% butterfat milk, then:
x + y = 45
0.30 x + 0.03 y = 0.12 (45)
Solve the system of equations with substitution or elimination. Using substitution:
0.30 x + 0.03 (45 − x) = 0.12 (45)
0.30 x + 1.35 − 0.03 x = 5.4
0.27 x = 4.05
x = 15
You need 15 gallons of 30% butterfat cream.
If angle ABC is 90°, then angle CBD is 90°:
Angle ABD=90°
3x°=90°
3x=90
Solving for x:
3x/3=90/3
x=30
Angle CBD=90°
(2x+3y)°=90°
2x+3y=90
x=30
2(30)+3y=90
60+3y=90
Solving for y:
60+3y-60=90-60
3y=30
3y/3=30/3
y=10
Answer: Option a. 10
Answer:
8
Step-by-step explanation:
