B+133=180
b=47
and 80+a+b=180
80+a+47=180
a=180-127
a=53
The answer is just use a calc lol 8
It is asking you to find the sum of k^2 - 1 from k=1 to k=4. Since that is only 4 numbers, calculating the sum by hand wouldn’t be that bad.
(1^2 - 1) + (2^2 - 1) + (3^2 - 1) + (4^2 - 1) = 26
The easier way to find the sum is to use a few simple formulas.
When we have a term that is just a constant c, the formula is c*n.
When we have a variable k, the formula is k*n*(n+1)/2.
When we have a squared variable, the formula is k*n*(n+1)*(2n+1)/6.
In this case, we have a squared variable k^2 and a constant of -1.
So plug in n=4 to the formulas:
4*5*9/6 - 1*4 = 26
The answer is 26
Hello there I hope you are having a great day :) Cindy has a chocolate box whose length is 12 cm, height of 8 cm, and width of 6 cm. Find the volume of the box?
V = L x W x H
Volume = length x Width x Height.
12cm x 6cm x 8cm = V = 576cm^3
so the answer is 576cm^3
Hopefully that helps you :)
Answer:
117.3
Step-by-step explanation:
7*4=117.29=117.3
