Answer:
3.92 approximately 4
Step-by-step explanation:
let us first find angle at F
40⁰+50⁰+F= 180 (sum of angles in a triangle)
90⁰+F= 180⁰
F= 180⁰-90⁰
F = 90⁰
using sine rule
3/sin 50 = x/sin 90
3/0.7660= x/ 1
0.7660x=3
x= 3/0.7660
x= 3.92 approximately 4
Answer:
y=2(x-5/2)2-35/2 that is the answer for the rewrite
Let’s use m for months
So,
1st service
10m + 20
1. 10 + 20 =30
2. 10x2=20+20=40
3.10x3=30+20=50
4.10x4=40+20=60
5.10x5=50+20=70
2nd service
11m + 15
1. 11+15=26
2. 11x2=22+15=37
3 11x3=33+15=48
4.11x4=44+15=59
5.11x5=55+15=70
So, the 5th month the services cost the same
Hope this helps! ;)
Use the pythagorean theorem:
EF² +DF²=DE²
EF²=18²-12²=180
EF=√180
E is the answer.
