Hey there!!
The number of mountain bikes - x and trail bikes - y
Into an equation
40x + 50y = 1750 ( this is for materials ) ------------------ ( 1 )
80x + 50y = 2750 ( this is for labor ) --------------------- ( 2 )
Subtracting the first equation from the second
40x = 1000
x = 1000 / 40
x = 25
x = mountain bikes = 25 bikes
The required answer = 25
Hope helps!
Answer:
Step-by-step explanation:
Realize what (-5)^3 means
(-5)(-5)(-5)
25(-5)
-125
meanwhile
(-9)^2 is
(-9)(-9)
81
Basically a negative times a negative is always positive, but when a negative number is cubed (or raised to any odd exponent for that matter) the product will be negative.
Answer:
The first one. She wrote because the amount of words typed went up, then the amount of words stays the same since she took a break. The amount of words then go down because she deleted some words then it rises since she starting writing again.