Answer:
x = 1 2/3 hours
Step-by-step explanation:
We can use ratios to solve
150 miles 100 miles
---------------- = ---------------
2.5 hours x hours
Using cross products
150x = 2.5*100
divide each side by 150
150x/150 = 250/150
x = 1 2/3 hours
Answer:
y=x-3/15
Step-by-step explanation:
f(x)=15x+3/y=15x+3
f-1(x) is an inverse function, which means you gotta swap the x an the y:
x=15y+3
The goal is to get y alone, so you minus 3 on both sides to get
x-3=15y
And then divide both sides by 15 to get y alone
x-3/15=y
Answer:
10x+4 = 84
Step-by-step explanation:
Azul bought 10 reams of paper at x dollars per ream
10x
The tax was 4 dollars
10x+4
The total cost was 84 dollars
10x+4 = 84
Answer:
Jewelry box: 1/6 yard
Step-by-step explanation:
4/5 (not 4\5) of her 5/6 yard goes into a dress: (4/5)(5/6 yd) = 2/3 yard.
This is the same as 4/6 yard. The amount of lace remaining, to be used on a jewelry box, is 5/6 - 4/6, or 1/6 yard.
To make a square for x²+bx=c, add(
)²on both side
in this case, b is-3/4, half of b is -3/8, and (-3/8)² is 9/64, so you add 9/64 to both side.
