Answer:
C, D and E
Step-by-step explanation:
Given
Represent solid beads with S and clear beads with C
So:

Required
Select operations that give an equivalent ratio
First, we need to get the unit ratio

Divide through by 4
-- This means that, after any operation. The equivalent ratio must be 2: 5
Option A: Add 2 to S and 2 to C

Perform the operation


Divide through by 2

Option B: Subtract 8 from S and 6 from C

Perform the operation


Option C: Multiply S and C by 2

Perform the operation


Divide through by 8

Option D: Divide S and C by 4

Perform the operation


Option E: Multiply S and C by 18

Perform the operation


Divide through by 72


<em>From the calculations above, options C, D and E gave an equivalent of 2:5.</em>
I think the answer is just 3 if all three are just 1 foot long
Answer:
The answer is 5 students taking English and Math but not History
Step-by-step explanation:
The total students are 28 which are divided into 5 possible groups with no students taking either English only or History only:
- Taking Math only
- Taking English and Math but not History
- Taking Math and History but not English
- Taking English and History but not Math
- Taking triple subjects
The number of students in group 3 is 6. Hence, the total number in group 1, 2, 4 and 5 is: 28 - 6 = 22
Also, the number of students in group 4 is five times the number in group 5, therefore: group 2 + group 5 = 6 times group 5
Additionally, the number of students in group 1 equals that in group 2.
Hence, the equation is: 6 x group 5 + 2 x group 2 = 22 => group 2 = 11 - 3 x group 5 => group 2 = 5 because group 5 is an even number and non-zero, it must be 2.
Answer:
Billions
Step-by-step explanation:
You count from the right side to the left, the order being:
Ones
Tenths
Hundredths
Thousandth
Ten Thousandth
Hundred Thousandth
Millionth
Ten Millionth
Hundred Millionth
Billionth