30 30 and 60 is the answer also i went in order
Primary energy (PE) is an energy form found in nature that has not been subjected to any conversation or transformation process.
It is energy contained in raw fuels, and other forms of energy received as input to a system.
Brainliest answer please!
Answer: help
Step-by-step explanation:
Answer:
36 is a composite number as it has factors other than 1 and itself. Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. Pair factors of 36 are (1, 36), (4, 9), (6, 6), (12, 3), and (18, 2). 1 is a factor of every number.
7+14+21+28+...+105=1*7+2*7+3*7+4*7+...+15*7
15
∑7*n=7*1+7*2+7*3+7*4+...+15*7=7+14+21+28+...+105
n=1
