Answer:
x = 27
Step-by-step explanation:
vertical angles are congruent , then
5(x - 4) = 4x + 7 ← distribute parenthesis on left side
5x - 20 = 4x + 7 ( subtract 4x from both sides )
x - 20 = 7 ( add 20 to both sides )
x = 27
Answer:
y = (-3f(x+4))+5
Step-by-step explanation:
Please see the picture below.
1. Apply to the function the vertical stretch with scale factor 3:
y = 3f(x)
2. Multiply the function by -1 to reflect it over the x-axis:
y = -3f(x)
3. Add up 4 units from x to translate the function 4 units to the left:
y = -3f(x+4)
4. Add up 5 units to the entire function to translate it up 5 units:
y = (-3f(x+4))+5
Answer:
C. E = 9h
Step-by-step explanation:
Please mark brainliest.
Answer:
Step-by-step explanation:
d = 200 miles
B rate = x
A Rate = x + 20
Each has traveled two hours
The total distance each travels after two hours is 200 miles (they pass each other).
d = r * t
2*x + 2*(x + 20) = 200 Remove the brackets
2x + 2x + 40 = 200 Combine like terms
4x + 40 = 200 Subtract 40 from each side
4x = 200 - 40
4x = 160 Divide by 4
x = 160/4
x = 40
There B's rate is 40 miles / hour
A's rate is 40 + 20 = 60 miles / hour
