Answer:
x=18
Step-by-step explanation:
6-x=-12
Subtracting 6 from both sides
-x=-12-6
-x= -18
Dividing both sides by -1
x=18
Answer:
81
Step-by-step explanation:
Let the digits that make up the number be a and b.
Given that the square root of the number is equal to the sum of the digits.
Then,
√(10a + b) = a + b
Also given that the square root of the number is less than the number obtained by interchanging the digits by 9, then
√(10a +b) + 9 = 10b + a
Since √(10a + b) = a + b, then
a + b + 9 = 10b + a
a - a + 9 = 10b - b
9b = 9
b = 1
since √(10a + b) = a + b
√(10a + 1) = a + 1
10a + 1= (a + 1)²
10a + 1 = a² + 2a + 1
a² + 2a - 10a + 1 - 1 = 0
a² - 8a = 0
a(a - 8) = 0
a = 0 or a = 8
Using a = 8 and b = 1,
the number 10a + b = 10(8) + 1 = 81.
Answer:
6.5
What is the Nearest 1000th?
Nearest thousandth is the third digit after the decimal point.
How to Calculate Rounding to the Nearest 1000th?
If the digit after thousandth is greater than or equal to 5, add 1 to thousandth. Else remove the digit. Example
124.5864
The fourth digit of right of decimal point is 4 which less than 5
So remove fourth digit
Result = 124.586
Step-by-step explanation:
Hope that helped
Answer:
√-1
Step-by-step explanation:
The imaginary number i is defined as √(-1)
NOTE : i² = -1
1. Collect like terms
(n - 0.3n) + (4.5 - 3)
2. Simplify
0.7n + 1.5
Final Answer:
0.7n + 1.5