Answer:
81
Step-by-step explanation:
2x+6=84
2x=78
81
find your own way
Take the 30 and divide it by 100 and you get the percent.
Ex. 30/100 = .3
Then multiply 64 by the percent.
64 x .3 = 19.20
Answer:
(c) 13.2
Step-by-step explanation:
The sum of angles in a triangle is 180°, so angle C is ...
C = 180° -A -B
C = 180° -16° -49° = 115°
The measure of side c can be found from the Law of Sines:
c/sin(C) = a/sin(A)
c = a·sin(C)/sin(A) = 4·sin(115°)/sin(16°)
c ≈ 13.2
First you subtract 3 on both side
9x=57-3
9x=54
then you divide by 9 on both sides
you got
x=54/9
x=6
The tectonic plates shifting in the water causing waves, the moon's gravitational pull also has an affect on water which causes the high tide and low tide