"X is partly constant and partly varies as y"
---> x = ky + p
when y=2,x=30 ---> 30 = 2k + p
when y=6,x=50 ---> 50 = 6k + p
subtract: 20 = 4k
k = 5
sub back in the first: 30 = 10+p
p = 20
x = 5y + 20
now you can answer B
notice this is just a variation of y = mx + b
Answer:
Height of cuboid = 0.384 cm (Approx.)
Step-by-step explanation:
Given:
Length of cuboid = 13 cm
Width of cuboid = 8 cm
Volume of cuboid = 40 cm³
Find:
Height of cuboid
Computation:
Volume of cuboid = length x width x height
13 x 8 x Height of cuboid = 40
Height of cuboid = 0.384 cm (Approx.)
Speed traveling west = x - 10 km /hr
275 / ( x-10) - 300 / x = 1/2
275 *2x - 300 (x-10)*2 = ( x-10) *x
550x - 600x +6000 = x^2 -10x
x^2 +40x - 6000 = 0
( x -60) ( x+100) = 0
x = 60
ANSWER East = 60 km/ hr West = 50 km /hr
CHECK
300 /60 = 5 hours
275 /50 = 5.5 hours
Answer:
87 + 8r
Step-by-step explanation:
We have a variable that we cannot simplify further:
8r
But we have two numbers that we can simplify:
94 - 7 = 87
Then we add those together:
8r+87
Answer:
1,395 sq feet
Step-by-step explanation:
lets start with the area of the green cube b×h. 15×15=225. 225×5= 1125. I got five because there are 5 visible faces on the cube. to find the area of a triangle you use the formula 1/2 bh 9×15= 135 multiply that by 2 instead of one half because you have four triangular faces. add your areas together and you get 1395
