Answer:
300 gm
Hope I helped :)
Step-by-step explanation:
Hello from MrBillDoesMath!
Answer:
225
Discussion:
Sum ( 2n - 1) from n = 1 to 15
= Sum(2n) - Sum(1) from n = 1 to 15
= 2 Sum(n) - Sum(1) from n = 1 to 15
= 2* 15(15+1)/2 - (1 + 1 + .. + 1)
The first value comes from the fact that the sum of the first n integers is n(n+1)/2. The latter value sums 15 1's.
= 2 * 15 * 16/2 - 15 => 2/2 = 1
= 15*16 - 15 => 15*16 = 240
= 240 - 15
= 225
Thank you,
MrB
Answer:
x^5y+4x+4y+2
Step-by-step explanation:
Fact, ^ is called an exponet
(Just so you know)
Answer:
B
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I’m not 100% sure though
The other 6 books can be arranged in 6 ways
= 6*5*4*3*2*1 = 720 ways answer
