Answer:ANS.B
Step-by-step explanation:1/3*3/4=3/12=.25 THE BETTER DEAL
3/12-2/10=30/120-24/120=6/120=1/20 ANS.B
We are given with the equation
1/sin 18 - 1/sin 54 = 2
We are meant to verify if the equation is true
So,
(sin 54 - sin 18)/ sin 18 sin 54 = 2
sin 54 - sin 18 = 2 sin 18 sin 54
sin 18*3 - sin 18 = 2 sin 18 sin 18*3
Use trigonometric identities to verify the equation.
The identities to use are the double and product of angles.<span />
Answer:
Let x = cost of your friend's lunch.
x + x + 3 = 19
x= 8
Answer:
V = 90 cm^3
Step-by-step explanation:
The volume is given by
V = Bh
where B is the area of the base and h is the height
The base is the two sides that are identical, which is the triangle
B = 1/2 bh
= 1/2 (4*3)
= 1/2 (12)
= 6
Substituting into the volume equation, where h = 15
V = 6*15
V = 90 cm^3
This is a two step equation. What we want to do is get x by itself.
We will add .3 to both sides:
0.4x=-0.11
We will now divide both sides by .4
X=-0.275
