-x+5=2x-1
+x +x
5=3x-1
+1 +1
6=3x
/3 /3
2=x
first you take both equations and set them equal to each other because they both equal Y then you add x to both sides to eliminate it from one side. next you add 1 to both sides so that you have 6 equals 3x. lastly you divide both sides by 2 to get your final answer x equals 2.
y=2x-1
y=2•2-1
y=4-1
y=3
when solving for y you have to choose one of the equations and substitute the answer you got for x in which is 2. Then you solve it like a regular equation and multiply first 2 by 2 and lastly subtract 1 from 4 which leaves you with an answer of y=3.
The coordinate point would be (2,3) because x=2 and y=3.
Answer:
57/64
Step-by-step explanation:
exactly 6 boys: (1/2)^6 BBBBBB
exactly 5 boys: 6*(1/2)^6 BBBBBG BBBBGB (and the 4 other slots the girl can fall)
at least 2 girls is equal to all other scenarios (where there are not 5 or 6 boys)
= 1 - [exactly 6 boys] - [exactly 5 boys]
= 1 - (1/2)^6 - 6*(1/2)^6
= 1 - 7*(1/2)^6
= 1 - 7(1/64)
= 1 - 7/64
= 57/64
AD = 6 - 2.4 = 3.6
AD/DE = AB/BC
3.6/DE = 6/10
DE = 3.6 x 10 / 6 = 36/6 = 6
answer
C. 6
