Answer:
$60
Step-by-step explanation:
just is
6 1/2 cups of flour.
You multiply 3 1/4 by 2, which is 6 2/4 and then simplify the 2/4 to 1/2 (they are equivalent)
All you have to do is replace every x with 2 and then solve:
<em>Make to sure to follow the Order of Operations!!</em>
-9x(2) + 11x - 7 =
(-9 × 2 × 2) + (11 × 2) - 7 =
-36 + 22 - 7 =
-14 - 7 =
-21
The answer is -21.
Hope that helps!
Answer:
(2, - 2 )
Step-by-step explanation:
4x - y = 10 → (1)
x - 4 = y → (2)
substitute x - 4 = y into (1)
4x - (x - 4) = 10 ← distribute parenthesis on left side by - 1
4x - x + 4 = 10
3x + 4 = 10 ( subtract 4 from both sides )
3x = 6 ( divide both sides by 3 )
x = 2
substitute x = 2 into either of the 2 equations and solve for y
substituting into (2)
2 - 4 = y
- 2 = y
solution is (2, - 2 )
