A.1.4 × 105
B.0.32 × 103
C.5.62 × 210
D.11.2 × 101
A. 1.4 × is written correctly in scientific notation
0.32 × needs to be 3.2 ×
5.62 × is just wrong its always × 10
11.2 × needs to be 1.12 ×
There is always 1 number before the decimal and that number is always greater than 0 and the number after × is always 10
Answer:
A 1.4 × 105
Step-by-step explanation:
Answer:
v = -2500*n + 32000
Step-by-step explanation:
Depreciation is usually calculated linearly, means that it follows the following equation (equation of a line):
v = a*n + b
where n is time after truck was new (in years), v is value of the truck (in $), and a and b are some constants.
A new truck costs $32,000, that is, when n = 0, v = 32000. Replacing into the equation:
32000 = a*0 + b
32000 = b
The truck is worth $24,500 after three years , that is, n = 3, v = 24500. Replacing into the equation:
24500 = a*3 + 32000
a*3 = 24500 - 32000
a = -7500/3 = -2500
what is 50% of the number?
explain how you worked this out