4,7,14
3*300
They are: 1*89*1 = 89
-91
3×0.25
594 x 393 = 191,862
108108108108108108
2 x 3 = 6
The answer is 6. Here's how to determine that: 1. Start with the original fractions of 3 3/4 + 2 7/28 2. Obtain a common denominator so they can be added together. To do that, multiply the numerator of the fraction with the smallest denominator by the same value it takes to increase the denominator to the same value as the other denominator. In english: in the fraction 3/4, "3" is the numerator and "4" is the denominator. We have to get the "4" to match the larger denominator ("28") of the 7/28 fraction. To do that, look at both denominators ("4" and "28") and determine if the smaller denominator ("4") can be multipled to equal the larger denominator ("28"). Since we know that multiplying 4 by 7 equals 28, we know that we can make the denominators equal by multiplying the 3/4 fraction by 7. So, doing so, we then have a fraction that is 21/28. Both numbers in the fraction are multipled by the same amount. 3. So, now you have 3 and 21/28 + 2 and 7/28. 4. Add the fractions (21/28 and 7/28) together, which gives you 28/28. Since the result is a whole number (a fraction with matching numerator and denominator), we no longer need to write it as a separate fraction. Therefore, the new formula looks like this: 3+2+1 (the 1 was originally 28/28). Added together, the result is 6.
Any number whose sum of its digits are equal to a multiple of 3, is divisible by 3. In this instance, the sum of the digits of the number 34215 is equal to 15, which is divisible by 3, and therefore the number is divisible by 3.
10+10+40
81 A number raised to the second power is the number multipled by itself twice (9*9). A number raised to the third power, is the number multipled by itself 3 times (9*9*9) and so on.
3 3/4 * 3 2/5 = 15/4 * 17/5 = 255/20 = 12.75 = 12 3/412 and 3 quarters