Answer:
Step-by-step explanation:
2a+3x+a+5x combine like terms
3a+8x
You would do an arithmetic sequence
use A1 +(n-1)d to calculate number of seats in the last row
An = 4+(24-1)5
An = 4 + (23)(5)
An = 4 + 115
An = 119 seats in the last row
now use a sum sequence to find total number of seats
Sn = n(a1 + an)/2
Sn = 24(4+119)/2
Sn = 24(123) /2
Sn = 1476 total seats
Answer:
No
Step-by-step explanation:
6a + 12 =? 3(3a + 4)
Distribute
6a+12 =? 3*3a + 3*4
6a+12 =? 9a +12
No
The expressions are not equivalent
Answer:
4
Step-by-step explanation:
1/3 of 30 students play sport
30×1/3
= 10
2/5 of this number plays soccer
10×2/5
= 20/5
= 4
Answer:
The answer is 6+3b<or equal to 15
Step-by-step explanation: