Answer:
20 + 8 + 0.1 + 0.9
Step-by-step explanation:
Answer:
The result is 0.36b
Step-by-step explanation:
Here. we want to translate the wordings into an expression of algebra.
Firstly, we decrease b by 40%
40% is same as 40/100 = 0.4
So decreasing b by 40% = b-0.4(b) = b-0.4b = 0.6b
Now we want to decrease 0.6b by another 40%
= 0.6b -0.4(0.6b)
= 0.6b - 0.24b
= 0.36b
Result: <u>Circumference = 150.72cm</u>
Explanation:
To find the circumference, C, we will use this formula:
C = 2 * 3.14 * r
Substitute:
C = 2 * 3.14 * 12
Multiply:
2 x 12 = 24
24 x 3.14 = 75.36
___________________________________________________________
And since the question asked for two revolutions.
All we need to do is multiply 75.36 by 2:
75.36 x 2 = <u>150.72</u>
2x-3y=12
4x+3y=24
6x=36
x=6
2(6)+3y=12
12+3y=12
y=0
(6,0)
