Answer:
23. 8n - 9
24. 55 - 45n
25. 69a - 10
26. -30m + 33
27. -4 + 96x
28. -8n + 26
29. -25b - 20
30. -71n - 9
Step-by-step explanation:
23. -2n - 9 + 10n
Collect like terms
= 8n - 9
24. 10 - 45n + 45
Collect like terms
= 55 - 45n
25. 9a + 60a - 10
Collect like terms
= 69a - 10
26. -54m + 27 + 6 + 24m
Collect like terms
= -30m + 33
27. -10 + 90x + 6x - 60
Collect like terms
= -4 + 96x
28. -10n + 20 + 2n + 6
Collect like terms
= -8n + 26
29. -30b - 30 + 5b + 10
Collect like terms
= -25b - 20
30. -7n - 21 - 8 - 64n
Collect like terms
= -71n - 9
Answer:
I think it's D, sorry if i'm wrong but let me know if I'm right!
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
9/12=12/x
x=16
Y=ax² + bx + c and A(-2,18), B(0.4), C(4,24) given
1)Let's determine 1st the value of c in using the pair of B
4= a(0)² + b(0) + c , c=4 and y=ax²+bx+4
2) Use the pair of A: 18 = 4a -2b + 4===> 4a-2b=14
3) Use C pair: 24 = 16a+4b+4 ==> 16a+4b=20
4) solve the system equation in 2) and 3) and you'll find a=2 and b=-3
Hence the equation is y =2x²-3x+4
