Answer: B)4
Step-by-step explanation:
x
=8
-
2y=1
8
---
(2)(1)
=
8
---
2
=4
Because it cannot be split in half to make a whole number, instead, it would make a number and a half.
IF:
|1/2.x -2/3.y = 7 and
|a.x - 8.y = -1
have no solution, that means these 2 linear equations ARE PARALLEL (since they can never meet). Reminder: 2 equations are parallel if they have the same coefficient , so let write each of the equation in the normal form:
a)1/2.x -2/3.y = 7→ -2/3.y = -1/2.x + 7 → y = 3/4.x - 21/2
b) a.x - 8.y = -1 → - 8.y = -a.x - 1 → y= a/8.x + 1
a) and b) are // if (3/4) = (a/8), [the 2 coefficient OR the 2 slopes)
a/8 = 3/4 → a = 24/4 and a = 6 (Answer D)
Suppose the base of the triangle is x.
x×6÷2=18
Then you work out the equation
x×6=18×2
x×6=36
x=36÷6
x=6
That means the base is 6 inches
If you want to check, you just have to plug 6 into x
6x6÷2=36÷2
=18 inches
So that means 6 inches is definitely the answer
Hope this helps!
Answer:
b (-2,2)
Step-by-step explanation:
