Use the Law of Sines (sina/A=sinb/B=sinc/C for any triangle)
YZ/sin30=50/sin90
YZ=50sin30 (sin90=1 :P)
YZ=25m
Use the 30,60,90° triangle ratios 1, √3, 2
YZ/1=50/2
YZ=25m
Using the Pythagorean Theorem....
(2*25)^2=YZ^2+(√3*YZ)^2
2500=YZ^2+3YZ^2
2500=4YZ^2
625=YZ^2
25m=YZ
Answer:
n + 3n
Step-by-step explanation:
If the unknown number is represented by n, then 3 times the unknown number is 3n.
The sum of n and 3n is written as ...
... n + 3n
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This can be simplified to 4n, but we believe the intent of the question is to see the sum, not the total.
the absolute value of anything is a positive number so
lx-11l= 5x+10
x+11=5x+10
-x -x
11=4x+10
-10 -10
1=4x.
1/4=4x/4
1/4=x
1 divided by four = .25
so x =.25
For the decimal rounded to the nearest tenth, 5 is is greater than numbers 1-4. So 5 rounds the 1.
0.2
0.2 in fraction form is 1/5.