a) Given triangle is a right angle triangle
So we use trigonometric properties
y = sin(51) * 12
y= 9.3257515
y= 9.33
b) It is a right angle triangle
sin(theta) = opposite / hypotenuse
sin ( theta) = 
theta = 
theta = 67.38 degree
c)
x= 29.238044
Hypotenuse x= 29.24
2x + ax - 7 > -12
2(-1) + a(-1) - 7 > -12
-2 - a - 7 > -12
-2 - 7 - a > -12
-9 - a > -12
<u> + 9 + 9</u>
<u>-a</u> > <u>-3</u>
-1 -1
a > 3
Twice the value of x is 2x, because it’s x with another x added on top (x + x = 2x)
Eight less than that is 2x - 8. That’s because you are taking away 8 from 2x (less than = subtraction).
Therefore your final expression is 2x - 8.
Answer:
215 seconds
Step-by-step explanation:
120 words : 100 seconds = 258 words : x seconds
x = 258*100/120 = 258*5/6 = 43*5/1 = 215 seconds
