We have to reverse what was already done to the number 19, so we’ll multiply it by 3 to get 57. We then subtract 8 from it to get 49. Therefore, the original number is 49.
Answer:
45x - 63 y + 36 z
Step-by-step explanation:
When I think of the distributive property, I imagine giving the outside term to everyone on the inside (multiplying).
9 (5x - 7y + 4z)
= 9 (5x) + 9 (-7y) + 9 (4z)
= 45x - 63 y + 36 z
Good luck with your math!
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Answer:
C
Step-by-step explanation:
Given the 2 equations
3x + 4y = 8 → (1)
y - 5x = 2 ← rewrite as
- 5x + y = 2 → (2)
Multiplying (2) by - 4 and adding to (1) will eliminate the y- term
20x - 4y = - 8 → (3)
Add (1) and (3) term by term to eliminate y
23x + 0 = 0
23x = 0 , then
x = 0
Substitute x = 0 into either of the 2 equations and solve for y
Substituting into (1)
3(0) + 4y = 8
4y = 8 ( divide both sides by 4 )
y = 2
solution is (0, 2 )
That is the lines intersect once at (0, 2 )
Answer:
(x + 2)² + (y + 9)² = 49
Step-by-step explanation:
Equation:
(x - h)² + (y - k)² = r²
(x - -2)² + (y - -9)² = 7²
(x + 2)² + (y + 9)² = 49
