b+g =20 or b = 20-g
and g = 2/3b sub in the definition of b above
g = 2/3 (20-g)
g = 40/3 - 2/3 g
5/3 g = 40/3
5 g = 40
g = 8
to complete the square , take 1/2 of the x coefficient and square it and add it
x^2 - 10x + 25 = (x-5)^2
In a triangle, all of the angles must add to 180o
soooo
x + 4x-5 + 55 = 180 you should be able to solve for 'x' now.....
-5x^3 + (-5x^2 -x^2) x (-7x-6x) + 1 + 1 complete the red part to find coefficient of x^2
(3m+5)(n-2) expand to find the missing number in your Q
Law of sines
sin 70o / 5.7 = sin xo / 5 solve for 'x'
VERY similar:
https://web2.0calc.com/questions/please-answer-this_7
big prism
one rectangle top is 6x 6
one rectangle front is 6 x 8
one rectangle back is 6 x 10
TWO triangular sides are two x 1/2 6 * 8 add all of these together ......
10) from 10 :15 to 1:45 is 3 1/2 hours
3 1/2 hr x 700 km/hr = 2450 km
compass bearing to airport is 330 30 west of north
9) 322 degrees from the ship forms 322-270 = 52 degree angle (at the boat 'tail' )
tan 52 = opp/adj
tan 52 = 18.5 / d
d = 18.5 / tan 52 = ~~14.5 km
14.5 km / 48 km/hr = .301 hr = 18 min
