Answer:
B: {(3,1), (7,9)}
Step-by-step explanation:
For equation 2x-y=5, we can isolate y, so it's easier to solve later:
y = 2x - 5
y = (x - 4)^2
Now, notice that both equations are equal to y, so we can set them equal to each other:
(x-4)^2 = 2x-5
x^2-8x+16 = 2x - 5
x^2-10x+21=0
Now, we can factorize by finding 2 numbers that multiply to 21 and add up to -10:
(x-3)(x-7)=0
x=3 or x=7
Since B is the only one with the x values of 3 and 7, the answer must be B.
But to further check our answer, we can plug x back to any of the equations above to check for y:
(3-4)^2 = 1
(7-4)^2 = 9
Therefore, we can confirm that the answer is B.
You plug in 2x + 4 into the y for the other equation (3x +y ) and solve for it
Answer:
Since she arrived at 8:30 its not accurate because her records started at the time she arrived so she didnt get the times of the students that arrived before her
Step-by-step explanation:
Hope this helps:))
Answer:
A.35
Step-by-step explanation:
trust bro
Answer:
hi so read explanation
Step-by-step explanation:
four sixteenth notes
Four eighth notes equal one- half note in duration and eight eighth notes equal one whole note. Two sixteenth notes are to equal one- eighth note in duration and four sixte enth notes equal one- quarter note in durations. hope dis helped
