Answer:
12 * 50 = 600
Step-by-step explanation:
We have to multiply 12 by 50
<u>Short cut method for multiplying a number by 50</u>
Step 1: Take the half of the given number
Step 2: Multiply the result by 100
<u>To find the short cut method to multiply 12 by 50</u>
Here the number is 12
Step 1: divide the number by 2
12/2 = 6
Step 2: Multiply 6 by 100 we get 600
Therefore 12 * 50 = 600
Answer:
The selection was made by a 10-strong jury instead of the former public vote, which ... a capacity of 12 musicians ;ind is equipped with a Scully 8-track tape recorder ... a $6 million turnover in 1972. a 40 percent increase on figures
Step-by-step explanation:
Answer: a) 1,600
b) 35,000
c) 120,000
<u>Step-by-step explanation:</u>
First, round each number to one significant digit (the first digit).
Then multiply them.
a) 17 --> rounds to 20
82 --> rounds to 80
20 x 80 = 2 x 8 with two zeros
= 1 6 0 0
b) 54 --> rounds to 50
671 --> rounds to 700
50 x 700 = 5 x 7 with three zeros
= 3 5 0 0 0
c) 207 --> rounds to 200
643 --> rounds to 600
200 x 600 = 2 x 6 with four zeros
= 1 2 0 0 0 0
2r-3r+10=20
Move all terms to the left:
2r-3r+10-(20)=0
add all the numbers together, and all the variables
-1r-10=0
move all terms containing r to the left, all other terms to the right
-r=10
r=10/-1
r=-10
