Step-by-step explanation:
3x + 5x - 2t = 8
3 . (-1) + 5 . (-1) - 2t = 8
-3 - 5 - 2t = 8
-8 - 2t = 8
-2t = 8 + 8
-2t = 16
t = 16/-2
t = -8
<h3>#CMIIW</h3>
a
7
because 4a + 7 - 7
35 - 7
equals 4a
28
and 4a/4
28/4
equals a
7
Sum of infinite series of a GS is a1 / (1-r)
so here it is 65 / (1 - 1/6) = 65 / 5/6 = 65*6 / 5 = 78 answer
Answer:
d = 18
Step-by-step explanation:
a = 3;
therefore
d = 4a + 6
d = 4(3)+ 6
d = 12 + 6
d = 18
The 4-member family can be seated in 4! ways.
The two brothers can be seated together in 2! ways.
Therefore, the total number of ways is

Diagrammatically, the result is shown in the figure below. The two brothers are family members 3 and 4, shown in shaded color.
Answer: 12 ways.