The answer is x=7/3 hope this helps
B=2a+5 -----(1)
a+b=44----(2)
place (1) into (2)
a+(2a+5) = 44
3a+5=44
3a=39
so a= 13
then b=2(13)+5= 26+5=31
so that the two numbers are 13 and 31
Answer:
15x - 4y =-50 -----(i)
3x - 2y=-16 --------(ii)
Using Substitution
From (i)
15x=4y-50
x=4y-50/15
Substitute x=4y-50/[15] into eqn (ii)
3x - 2y= -16
3[4y-50]/15 - 2y =-16
Multiply through by 15 to clear the fraction
3(4y - 50) - 30y=-240
12y - 150 -30y=-240
12y-30y=-240+150
-18y = -90
y=90/18
y=5.
Substitute into any eqn of choice to get x
3x - 2y=-16
3x - 2(5)=-16
3x - 10=-16
3x=-16+10
3x=-6
x=-6/3
x=-2.
x= -2
y=5
D. The water evaporates and the salt remains in the beaker.
When a liquid is boiled the liquid evaporates, while the minerals settle.
Answer:
A week is 7 days so if she spends 3 hours a day that 21 hours during a whole week. Since we are trying to find 4 weeks we multiply by 4
21*4=84
Hope This Helps!!!
