Math
Evaluate.
-1.5+3.6
2.1
Solve for x.
-x-7=-21
x=14
Find the value of the missing variables.
3x=27
2x+5y= 33
x=9
y=3
y=-2x+5
-2
Solve for x.
3x+2=4x-6
x=8
Evaluate.
0.375*(6/8)
0.28125
Solve for x.
-5(-3x-5)-10=-6
x=-21/15 or -7/5 or -1.4
Find the value of the missing variables.
x + x + x = 24
3y = 27
6z-2x+y = 32
x=8
y=9
z=6.5
y-5=6(3x-2)
18
y=5x-2
y=2x+7
x=3
y=13
Evaluate.
0.75/(1/4) + 17.6
20.6
Solve for x.
-6-3(-9x-3)-6x-4= -40
Leave the answer as an improper fraction.
x=13/7
Find the value of the missing variables.
x=3y
y=38-6x
z= 4x-2y
x=6
y=2
z=20
The line goes through the point (-6, 2) and (-4,-1)
-3/2
y=-7x
57.5=5x+4y
x= -2.5
y= 17.5
Simplify this expression.
(3x/2) - 5(-2x+6) - (x/2)
11x-30
Solve for x.
-9-2(-5x-7)-(2x-3)-16= -64
x=-7
Find the value of the missing variables.
3x+y +2z = 20
y= 4x-7
z= -2x+9
x=3
y=5
z=3
Write the equation in slope-intercept form of a line that passes through (4,62) with a slope of 13.
y= 13x+10
x= -2y+5
3x+4y=50
x= 40
y= -17.5
Simplify this expression.
-8(3x+4)+6(4x-2)+44
0
Solve for x.
-2-3(-4x-7)=-6-5(-3x-8)
x=-5
Find the value of the missing variables.
-2x+5y=36
y=6x-4
z= 4x+7y
x= 2
y=14
z= 106
-6x+4y= 60
1.5
Richie collects quarters and dimes. He has collected a total of 15 dollars worth of quarters and dimes. He has collected a total of 90 quarters and dimes altogether. How many dimes are in his collection? How many quarters?
dimes = 50
quarters = 40