A. 2(x + 3) + 2x and 4x + 3
B. -2 + 4 (x + 3 ) and 4x + 10
C. 3x + 5 ( x - 1) and 8x - 5
D. 5x - 2 (x + 4) and 3x + 8
E. 4 - 5 (x + 2) and 5x - 6
Answer:
x = 10
Step-by-step explanation:
Given the 2 equations
x - y = 11 → (1)
2x + y = 19 → (2)
Adding (1) and (2) term by term will eliminate the y- term
(2x + x) + (y - y) = (19 + 11)
3x = 30 ( divide both sides by 3 )
x = 10
The y intercept is zero because it crosses the y axis at 0
B the correct answer Is b
A child makes a pitcher of fruit punch by completely dissolving fruit- flavoured powder in water. The child drinks a glass and decides the punch needs to be sweeter, so she stirs in more powder. This time the powder does not all dissolve, but settles on the bottom of the pitcher. A) Is the fruit-flavoured powder a pure substance or a mixture? * helpme anyone?