Answer: 2/35
Step-by-step explanation: First you have to find the minimun common multiplier (MCM). 5 and 7 are prime numbers (only divisible by one and themselves), so they MCM is the product of both, resulting in 5 times 7 equals 35. Now you find the equavilent equation to 1/7 and 1/5 to make them in 5/35 and 7/35, respectively. Finally the clear difference is 2/35. (7/35 - 5/35)
10% for 1 year = $13
10% for 4 years = 13 x 4
= $52
D I believe this is correct
Definition of tangent of a given angle α :
tan( α ) = measure of the opposite side / measure of the adjacent side.
For the given case,
angle α = 35 °
measure of opposite side = x cm
measure of adjacent side = 12 cm
From definition of tangent,
tan(35 ° ) = x/12
Isolate and solve for x:
x=12 tan(35) = 12 * 0.7002 = 8.4 cm