Answer: 47 and 16
Step-by-step explanation:
- Make Two Equations
x + y = 63
x - y = 31
- Set one of the equations equal to one of the variables
x + y = 63
x = 31 + y
- Substitute the equation back into the other one
(31 + y) + y = 63
31 + 2y = 63
2y = 32
y = 16
- Substitute the answer back into the equation
x + y = 63
x + 16 = 63
x = 47
4 just count how many are there that are between 19-21
The y-intercept is the value of y when the graph intersects the y-axis. Graphs intersect the y-axis when x=0, so we just substitute in x=0 to get:
y=2(0+3)(0+4)
y=2(3)(4)
y=24
Therefore, 24 is our answer.
Hope I helped :)
Answer: 9 or 10
Step-by-step explanation:
That is an isloated triangle.
30+[ ]+[ ]= 180 degrees.
Reminder: [ ] & [ ] is a same amount of number.
So 11*x-18 is [ ].
180-30= [ ] & [ ].
[ ] & [ ]= 150.
Then, [ ] is 150/2.
[ ]= 75.
<u>(11*x - 18)= 75 degrees.</u>
9*9-18= Answer.
I hope that helps :D
