Answer:
a = 6 b= 7
Step-by-step explanation:
4 (b-1) = 3b + 3 substitue for a
4b - 4 = 3b + 3 subtract 4b from both sides
-4 = 3b + 3 - 4b = -4 = -b + 3 combine 3b and (-4b)
-7 = -b divide by -1 for both sides
7 = b
4a = 3 × 7 + 3 substitute for b
4a = 24 combine like terms
a = 6 divide by 4 on both sides
a = 7 -1
a = 6
For question 1, the formula for that is m1= 1/2(a-b). 106 being A and 62 being B. You should get m1=.5*(106-62) which equals B.22
Answer:
see explanation
Step-by-step explanation:
Given the 2 equations
3x - 5y = - 2 → (1)
2x + y = 3 → (2)
Multiply (2) by 5 will eliminate y when added to (1), that is
10x + 5y = 15 → (3)
Add (1) and (3) term by term
(3x + 10x) + (- 5y + 5y) = (- 2 + 15)
13x = 13 ( divide both sides by 13 )
x = 1
Substitute x = 1 into (2) for corresponding value of y
2 + y = 3 ⇒ y = 3 - 2 = 1
Solution is (1, 1)
She would be able to tip 7 waiter if she has enough money left over to tip the 7 waiters.
hope this helped have a nice day:)
