Answer:
the answer is A.
just took the test e2020
Step-by-step explanation:
Y = x - 7 ---------- (1)
5x + 2y = 7 ------ (2)
Sub (1) into (2):
5x + 2(x -7) = 7
5x + 2x - 14 = 7
7x - 14 = 7
7x = 7 + 14
7x = 21
x = 3 ----- -sub into (1)
y = x - 7
y = 3 - 7
y = -4
Ans: x = 3, y = -4
Answer:
D. 211
Step-by-step explanation:
180-19=161
161+50=211
19+(211(x)-50)=180
So the circle when it is filled in means that the number is included so in the phase the < or > sign will have a line under it, for instance 1. X> 2 the answer would be D because everything that the number line is showing you is less than 2 and the circle is not filled in so 2 is not included in the answer
