Answer:
Removing the perfect square 4 in 12 we get 2√3
Step-by-step explanation:
The square root of 12 is
√12 = √(4 x 3)
√12 = 2√3.
There's no special trick here, but it's usually easy to check whether a small number is divisible by 4. Keep this in mind when looking for factors.
Removing the perfect square 4 in the square root of 12 we get 2√3.
Here 4 is a perfect square it can be written as
√4 =√2^2
√4 =2
2.5 hours, because 10 miles an hour times 2 = 20 plus half the time? 2.5
Answer:
100
Step-by-step explanation:
(18 + 7) x (11 - 7)
25(11-7)
275-175
100
Direct proportionality
2 inches/ 10 miles = 5 inches / x miles
cross multiply
2x = 50
divide both sides by 2
x = 25
The actual distance between the library and the bank is 25 miles
Hope this helps :)
Answer:
Firstly, rewrite the equation:
⅓ (18 + 27) = 81
Substitute x for the given number of it's supposed equivalent.
In this case x = 12.
⅓ (18(12) + 27) = 81
Solve using PEMDAS and simplify what is in the parenthesis first. Then, multiply.
(18 x 12) + 27 = 243
Now, solving using PEMDAS, multiply the total of what you got that was originally in the parenthesis by ⅓ .
⅓ (243) = 81
When you multiple these number they are equivalent to 81.
81 = 81
Since the equation given, when substituted x for 12, is equivalent to 81, this proves that substituting x for 12 makes this equation true.
