One Step/Multi
-3x = 27
x=-9
10-5v = 10 -v
v=0
abs(x-5)=12
x=17 or x = -7
Solve for x
x+y+z=A
x=A-y-z
x/8 = 6/12
x=4
-8 + x = 17
x = 25
-5x=-8x-6
x=-2
abs(6x)=36
x=6 or x = -6
Solve for r:
I=prt
r=I/(pt)
7/9=5/x
x=6.43
3(x - 5) =24
x=13
5x - 8=3x +7+2x-4
No Solution
abs(3x)-8=-12
No solution
Solve for y:
3y = 20x - 2y
y=4x
Convert 54 inches to yards
1.5 yards
4x + 7 - 2x + 8=5
x = -5
1/2(12x-10)=6x-5
Infinitely Many Solutions
5abs(2x-8)=30
x=7 or x=1
Solve for x:
3x -8xz+4z=3y
x=(3y-4z)/(3-8z)
A tree creates a shadow that is 42 feet long. A 6 foot man creates a 8 foot shadow. If the triangles that the man/shadow and tree/shadow are similar, find the height of the tree.
x/42=6/8; x=31.5 ft
1/2(x+8)-3/2x=12
x=-8
1/2 x + 8=3-1/3 x
x=-6
abs(x+4)/3-6=-4
x=2 or x=-10
I deposited $5000 into a savings account. After 18 months, I earned $281.25 in interest. What is my interest rate for the account?
3.75%
P=$5000, I = $281.25, t = 1.5 yrs
r=I/(pt)
281.25/(5000*1.5)
Convert 65 mph to ft/sec
(65mi)/(1hr)*(5280ft)/(1 mi)*(1 hr)/(60 min)*(1 min)/(60sec)=95.bar3