Answer:
20
Step-by-step explanation:
10
+ 10
--------
1+1 = 2 and the 0 to the end to get 20
Answer:
B
Step-by-step explanation:
x + 3y = 7 → (1)
3x + 2y = 0 → (2)
Multiplying (1) by - 3 and adding to (2) will eliminate x
- 3x - 9y = - 21 → (3)
Add (2) and (3) term by term to eliminate x
0 - 7y = - 21
- 7y = - 21 ( divide both sides by - 7 )
y = 3
Substitute y = 3 into either of the 2 equations and solve for x
Substituting into (1)
x + 3(3) = 7
x + 9 = 7 ( subtract 9 from both sides )
x = - 2
solution is (- 2, 3 ) → B
Answer: x = 37, p=54, q=89 r=37
Step-by-step explanation:
Answer:
the midpoint of (8, -9) and (0,5) is (0+8/2,5-9/2)
This is a perfect square trinomial. All of these special cases take this form which you can identify: a²+2ab+b².
x^2 - 8x +16 equals (x-4)²
answer: (x-4)²
