Answer:
14.4
Step-by-step explanation:
To find 40 percent of 36, here's how I do it. Just divide 36 by one hundred (move the decimal point two times to the left), giving you 0.36. Then multiply that by 40, and you get 14.4! Of course, there are multiple ways to do it, but that's just mine. If it doesn't work for you, try and search some formulas.
Answer:
64
Step-by-step explanation:
you multiply 8 x 8
Answer:
1890
Step-by-step explanation:
The sum of the terms of this arithmetic sequence is the product of the number of terms and the average of the first and last term.
A1 = 4·1 + 1 = 6
A30 = 4·30 + 1 = 121
The average term in the sequence of 30 terms is (6 + 121)/2 = 63, so the sum of the sequence is ...
30·63 = 1890
Let's get them to have a common denominator
2/3 and 3/4 are
8/12 and 9/12
clearly 8/12 will fit in 9/12 only once
so to simplify the fractions
2/3 fits in 3/4 only once
Hope this helps :)
Ratio problem
1 cm = 120 km
------- = --------
x 463
120x = 463
x = 23.15 = 23.2
