Answer:
(8,5)
Step-by-step explanation:
5x-2y=30
lets substitute "8" as x and see where that takes us
5(8)-2y=30
40-2y=30
subtract 40 on both sides
-2y=-10
divide by "-2" on both sides
y=5
(8,5) is your answer
Answer:
a) 0.15
b) 0.2
c) 0.6
Step-by-step explanation:
Answer:

Step-by-step explanation:
![6[10] - 5 + 5[10] = 105 \\ \\ 60 - 5 + 50 = 105 \\ \\ 105 = 105](https://tex.z-dn.net/?f=6%5B10%5D%20-%205%20%2B%205%5B10%5D%20%3D%20105%20%5C%5C%20%20%5C%5C%2060%20-%205%20%2B%2050%20%3D%20105%20%5C%5C%20%20%5C%5C%20105%20%3D%20105)
I am joyous to assist you anytime.
Answer:
(x, y) = (-0.6, 0.8) or (1, 4)
Step-by-step explanation:
Use the second equation to substitute for y in the first.
(x -1)² +((2x +2) -2)² = 4
x -2x +1 + 4x² = 4 . . . . . . . eliminate parentheses
5x² -2x -3 = 0 . . . . . . . . . . subtract 4, collect terms
Now we can rearrange the middle term to ease factoring by grouping.
(5x² -5x) +(3x -3) = 0
5x(x -1) +3(x -1) = 0
(5x +3)(x -1) = 0
The values of x that make these factors zero are ...
x = -3/5, x = 1
The corresponding values of y are ...
y = 2(-3/5)+2 = 4/5 . . . . for x = -3/5
y = 2(1) +2 = 4 . . . . . . . . for x = 1
The solutions are: (x, y) = (-3/5, 4/5) or (1, 4).
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A graphing calculator verifies these solutions.
Answer:
I'm not too good at this but I got 10/4??
Step-by-step explanation:
please let me know if I'm right!