Let the numbers be x and 4x. So, according to the question,
x + 4x = 100
=> 5x = 100
=> x = 100/5
=> x = 20
So, the number are,
x = 20
and
4x = 4×20 = 80
So, the two numbers are 20 and 80.
You need to use y=mx+b to solve the equation.
Answer:
The domain is all real numbers.
The range is all real numbers.
The graph crosses the y axis once.
The graph increases from negative infinity to positive infinity.
Step-by-step explanation:
The graph crosses the axis when x = 0:
y(0) = (0 - 3)^3 + 1
= -27 + 1
= -26 so it crosses y-axis at (0, -26) only.
Point where it crosses the x axis is when y = 0:
(x - 3)^3 + 1 = 0
(x - 3)^2 = -1
x-3 = cube root of -1 = -1
x = 2. It only crosses the x axis once at (2, 0>
3+2 = 5
80/5 =16
16 x 3 = 48
16 x 2 = 32
Answer= 48:32
I think this is right
The escalator -- or hypotenuse-- is
40
feet long
Hope this helps!!!