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What number times itself equals 441?
There are two correct answers: . . . positive 21 . . . negative 21
What is the additive inverse of -21?
The additive inverse of a number is the value that, when added to the original number, results in zero. In this case, the additive inverse of -21 would be 21, as -21 + 21 equals zero. The additive inverse is essentially the negative of the original number, so the additive inverse of -21 is 21.
Is the product of 21 negative numbers and 23 positive numbers a positive number or a negative number?
Well, honey, buckle up because we're diving into some math! When you multiply an odd number of negative numbers, the product is negative. Since 21 is an odd number, the product of 21 negative numbers will be negative. And since 23 is an odd number as well, the product of 23 positive numbers will also be positive. So, when you multiply them together, you get a negative number. Math, ain't it a peach?
If 21 divides into M what else must dive into M?
If 21 divides into M then all the factors of 21 must divide into M.The factors of 21 are 1, 3, 7, 21 (we usually avoid the factor 1 and the number)So, 3 and 7 must divide into M.
What number goes into 12 and 21?
There is no number that goes into both. must be a trick questionthis is another person not the same one :)the number that goes into 12 and 21 is 3 which is a 5th grade problemwho ever said theres no number that goes into 12 and 21 is WRONG!
Is 21 a positive whole number?
Yes, it is.
Hanry thought of a number Then he doubled it and then added 21 and his answer was 143 What was the number Henry thought of?
(143 - 21)/2
What are two mathematical facts about the number 21?
It is an odd number. It is not prime. Its factors are 1, 3, 7 and 21. It is positive.
What is the absolute value of21?
absolute value is any number turned positive...so even if 21 is already positive, the absolute value is 21, the absolute value of -21 is 21 btw.
What number times itself equals 441?
There are two correct answers: . . . positive 21 . . . negative 21
What is the least number to be added to 1500 to make it a perfect square?
21
What is one half of a number added to two thirds of the same number if it equals 21?
18
What can go into 10 and 21?
Other than the number 1, there are no positive integer common factors of 10 and 21.
Is the number 21 composite square or prime?
21 is a composite number because it has at least one positive factor other than one or itself.
What the answer to the sum of a number and 2 times the number is 21?
The answer is 7. Explanation: x+2x=21 therefore 3x=21 so it must be 7
What must be added to 5days2hours17minutes to make it 1week2days1minutes?
3 days, 21 hours, 44 minutes.
What is the product of a negitave number and a positive number?
The product of two numbers is the two numbers multiplied together. When multiplying a positive number and a negative number, the answer is always negative. For example: 7*-3= -21
