Your answer will be x-2. Hope I helped!
Answer:
A multiplicative inverse or reciprocal for a number x, is denoted by 1/x or x‾¹.
So, the answer to your question is <u>B. a × (1/a) = 1. </u>
Hope this helps!! :)
Answer:
No
7
Step-by-step explanation:
We can start by factoring 392 to see whether it is a cube. 392 is obviously divisible by 2 because the last digit is even, and dividing by two we get:
392 = 2 x 196
Again, 196 is divisible by 2, so we get:
392 = 2 x 2 x 98
And 98 is also divisible by 2:
392 = 2 x 2 x 2 x 49
49 is 7 times 7, so we can finish the prime factorization of 392:
392 = 2 x 2 x 2 x 7 x 7
This is the same as:
392 = 2^3 x 7^2
We can see 392 is not a cube because both numbers are not raised to a power divisible by 3.
In order to turn it into a cube, we'd need to make both prime factors raised to the power of a multiple of 3. 2 is already raised to one, but 7 is raised to the power of 2. In order to make that two divisible by 3, we can multiply by 7 so that our number is 2^3 x 7^3(2744), and this would be a cube(It's 14 cubed).
LCM is 240
GCF is 6
<em>long explanation</em>
Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.
LCM(a,b) = ( a × b) / GCF(a,b)
We will now calculate the prime factors of 30 and 48, than find the greatest common factor (greatest common divisor (gcd) of the numbers by matching the biggest common factor of 30 and 48.
Step-1: Prime Factorization of 30
30 = 2^1 × 3^1 × 5^1
Step-2: Prime Factorization of 48
48 = 2^4 × 3^1
Step-3: Factors of 30
1, 2, 3, 5, 6, 10, 15
Step-4: Factors of 48
1, 2, 3, 4, 6, 8, 12, 16, 24
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 30 and 48. The biggest common factor number is the GCF number.
So the greatest common factor 30 and 48 is 6.
