Answer:

Step-by-step explanation:
The formula for the nth term of a geometric sequence is
aₙ = a₁rⁿ⁻¹
In your geometric sequence, a₁ = 4 and a₁₃ = 16 384.

Check:

It checks.
If you subtract 20.5 by 5.25 x 2 you will get 10 by 2 and you have the answer
Answer: 
Step-by-step explanation:
<h2>We can't solve it but we can simplify</h2>
- 1/4x+1+3/4c-2/3-1/2x, try to move the equation around. Since the operations are in the same level we can do that.
- 1/4x-1/2x+(1-2/3)+(3/4c), 1/4 minus 1/2 can be written as 0.25-0.50 which is -0.25 or -1/4 don't forget to add x (we can do this since there like terms)
- -1/4x+(1-2/3)+(3/4c), now we can convert 1 into a fraction which will become 3/3, so we can rewrite is as 3/3-2/3, which is 1/3
- -1/4x+1/3+3/4c, We can't simplify anymore so this is our final answer.
Answer:
63
Step-by-step explanation:
x = # in ones place
y = # in tens place
x + y = 9
y = x - 3
substitute:
x + x-3 = 9
2x - 3 = 9
2x = 12
x = 6
y = 3
You can seperate the prisms then use the formula l*w*h which for the one on top u get V=20 and for the other one is 48 so 20+48= 68 so the volume of the prism is
(☞゚ヮ゚)☞ 68 ☜(゚ヮ゚☜)