Answer:
Answer is the chart 4.
Step-by-step explanation:
f(x) = -2x + 6
when x = 0, f(0) = 6
when x = 2, f(2) = -2(2) + 6 = 2
and so on....
Only the chart number 4 matched the above
Answer is 4
Answer:
f(x)=6x³ - 8x
Step-by-step explanation:
110x=405
1*x^2 +1*x^1 +0*x^0=4*5^1+0*5^0
x^2+x=4*5
x^2+x=20
x^2+x-20=0
x^2 +5x-4x-20=0
x(x+5)-4(x+5)=20
(x-4)(x+5)=20
x= 4 or -5
But a base cannot be negative so
x=4
Answer:
The speed rate of the plane in still air is 1006.67 km/h
The speed rate of the wind is 246.67 km/h
Step-by-step explanation:
To answer the question, we let the speed of the plane in still air = x km/h
Let the speed of the wind = y km/h
Therefore,
4560/(x - y) = 6 hours and
3720/(x + y) = 3 hours
4560 = 6·x - 6·y.........(1)
3720 = 3·x + 3·y ........(2)
Multiplying equation (2) by 2 and add to (1) gives
12080 = 12·x
x = 12080/12 = km/h
Substituting the value of x in (1) gives
4560 = 6040 - 6·y
6·y = 1480
y = 1480/6 =
The speed rate of the plane in still air = 1006.67 km/h
The speed rate of the wind = 246.67 km/h.
Answer:
(d+4)(d+6)
Step-by-step explanation: