1) h ≥ 19
2) y > 6
3) 2x ≤ 10
x ≤ 5
4) 9x ≤ 45
x ≤ 5
Answer:
40 km
Step-by-step explanation:
You have 2 variables: km and minutes/hour
30 minutes turned into 60 minutes(1 hour) by multiplying by 2...
So you need to do the same for km!
20km * 2 = 40km per hour
Answer:
L = 16
w = 10
Step-by-step explanation:
Givens
Area = 160 sqr inches
width = x
length = x + 6
Equation
Area = L * w
Solution
Substitute in the equation all of the givens.
160 = x(x + 6) Remove the brackets
160 = x^2 + 6x Subtract 160 from both sides.
160-160 = x^2 + 6x - 160
0 = x^2 + 6x - 160
This equation factors. Turn it around first
x^2 + 6x - 160 = 0
(x - 10)(x + 16) = 0
Answer
x (width) = 10
x + 16 = 16
