When and doubt choose C, it’s always correct
Answer:
400 cubic yards
Step-by-step explanation:
There are three cubic feet in each cubic yard
13)
let assume # denotes angle signs
now
as sum of 3 angels in triangle is 180
#2 +#3 +#4 = 180
also
#1 + #4 = 180
so equating both equation
#2 +#3 + #4 = #1 + #4
#4 will be cancelled from both side then
#2 + #3 = #1
proved
14)
ratio is 1:3:5
so Alma adsed it wrong. it should be 9x in 2nd line.
correction
x + 3x + 5x = 180
9x = 180
x = 180/9 = 20
so 1st angle = x = 20
2nd angle = 3x = 3×20=60
3rd angel = 5x = 5×20 = 100
15% of 8quarts and 90% of 8 quarts = x% of 16 quarts
0.15 x 8 quarts + 0.90 x 8 quarts
=1.2 quarts + 7.2 quarts
= 8.4 quarts
8.4 quarts/16 quarts
= (8.4)/(16)
= 0.525
= 52.5%
ONLY because the solutions are 50-50 we could have averaged the percentages (15 + 90)/2 = 52.5
X + 17 = 3x -31 (opposite angles are equal)
x + 17 = 3x -31
31 +17 = 3x - x
48 = 2x
x = 24