Another way to do it is
2x-y=17
x-y=10, x=10+y
substitute x=10+y for x in 2x-y=17 and get
2(10+y)-y=17
20+2y-y=17
20+y=17
subtract 20 from both sides
y=-3
subsitute y=-3 into equation x-y=10
x-(-3)=10
x+3=10
subtract 3 from both sides
x=7
or subsitute into 2x-y=17
2x-(-3)=17
2x+3=17
subtract 3 from both sides
2x=14
divide both sides by two
x=7
Answer:
Step-by-step explanation:
(a)Probability that these three marbles are all red
choosing 3 red out of 6 is given by
and choosing 3 marble from 14 marbles=
(b)All of same color
It is possible when they are of either red or green
For red it is
For Green it is
total=
=
Answer:
1024 pi
Step-by-step explanation:
r = 32 units.
Area = pi * r^2
Area = 3.14 * 32^2
Area = 1024 * pi
Tt = pi??
Y = 2(5x^2+1 + x^2+4)
plus in 5 for x, then get 31 feet
Answer:
x=adams sweets
x+(x+3) + (4x)
Step-by-step explanation: