Answer:
-2x + 5 = -4k
Step-by-step explanation:
To figure this out, you need to figure out what percentage 68 is of 85.
1. Divide 68 by 85 (Divide the % correct by the total number of questions)
2. 68/85 is .8, which is 80%
120 divided by 5
answer=24
Define
v = value after t years.
Therefore the linear model is
v = mt + c
where
m = depreciation rate
t = years since purchase
c = constant
When t=0, v = 20,000, therefore
20000 = m(0) + c
c = 20000
When t=10, v = 2000, therefore
2000 = 10m + 20000
-18000 = 10m
m = -1800
Answer:
The linear model is
v = -1800t + 20000
Answer:
y = 8
Step-by-step explanation:
Since the 2 triangles are similar then the ratio of corresponding sides are equal, that is the sides 15 and 10 and y + 4 and y, thus
= 
( cross- multiply )
10(y + 4) = 15y ← distribute left side
10y + 40 = 15y ( subtract 10y from both sides )
40 = 5y ( divide both sides by 5 )
8 = y
