Answer:
r = t - u - s
Step-by-step explanation:
To solve for r in terms of s, t, and u, means to have r on one side and have t, u, and s.
t = u - s + r
t - u = s + r
t - u - s = r
Answer:
2+3+2+3+2+3+2=17 because each was worth 2 or 3
Answer:
no solution
Step-by-step explanation:
4x-7=4x+2
-4x +7 -4x +7
0 = 9
0 doesn't equal 9, so there is no solution.
Answer:
3/10
Step-by-step explanation:
There are totally 5 disks. On the first pick, there are 3 red discs. So
P(red disc on first pick ) = 3/5
Assuming that a red disc has been picked the first time, there will be 2 red discs and 2 blue discs so
(P red disc on second pick given red disc on first pick) = 2/4
P(red disc on both picks) = 3/5 x 2/4 = 3/10
Set up a system of equations.
When you're shopping you multiply how many of the same item you buy with the item's price. Example if an apple costs 20 cents, 5 apples cost a dollar
4.55A + 5.75B = 898.00
A+B = 176 Number of type A and type B total
Get B or A by itself. Let's do B. Subtract A from both sides:
B= 176-A
Plug in B into the other equation.
4.55A + 5.75B = 898.00
4.55A + 5.75(176-A) = 898.00
Solve for A.
4.55A +1012 - 5.75A = 898.00
-1.2A = -114
A = 95
Now you know A, you can find B. Plug A into any equation to get B.
95 + B = 176
B=?
