Hey there!!
Let's take the number as ' x '
Three times the difference of a number and 5 :
Difference of a number and 5 : x - 5
Three times : 3 ( x - 5 )
This is same as :
1 increased by 5 times the number plus twice the number :
5 times a number : 5x
2 times number a number : 2x
Added : 7x
1 plus the sum : 1 + 7x
Now,
The equation :
Hence, the number is -4
Hope my answer helps!
Answer:
NI = 45
IG=28
HG^2 = NI^2 +IG^2
= 45^2 +28^2
=2025+784
= 2809
HG=53
CosG = IG/HG
= 28/53
= 0.52
135 miles in 3 hours
Step-by-step explanation: