Answer:
(3, 3 )
Step-by-step explanation:
Given the 2 equations
3x - y = 6 → (1)
6x + y = 21 → (2)
Adding the 2 equations term by term will eliminate y, that is
(6x + 3x) + (y - y) = (21 + 6), that is
9x = 27 (divide both sides by 9 )
x = 3
Substitute x = 3 into either (1) or (2) and solve for y
Using (2), then
(6 × 3) + y = 21
18 + y = 21 ( subtract 18 from both sides )
y = 3
Solution is (3, 3 )
30.
3/4 is equal to 75%, so take 75% of 40 by multiplying .75 by 40 to get 30
Answer:
m = 13
Step-by-step explanation:
Given
m - 5 = 8 ( isolate m by adding 5 to both sides of the equation )
m = 8 + 5 = 13
Answer:
60^3 + 8a -5
Step-by-step explanation:
Like opposite of 5 is 5×-1 = -5,
Opposite of -60³ - 8a +5 is:
-(-60³ - 8a +5)
60³ + 8a - 5
65000x.135=8775
65000+8775=73775
So Bill earns $73,775 after the increase
Hoped this helped