Answer:
- The product of an even number and an oven number
- The product of an odd number and an odd number
- The product of a perfect cube and a perfect cube
Step-by-step explanation:
The product of two even numbers will have at least two factors of 2, so will be even: <em>even numbers are closed under multiplication</em>.
The product of two odd numbers will be an even number plus 1, so will be odd: <em>odd numbers are closed under multiplication</em>.
The product of two cubes will be the cube of the product of their cube roots: <em>cubes are closed under multiplication</em>.
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The product of two negative numbers will be positive, so <em>the set of negative numbers is </em><em><u>not closed</u></em><em> under multiplication</em>.
Answer:
Step-by-step explanation:
Hello,
At the beginning the population is 240,000
After 1 year the population will be
240,000*(1+7.75%)=240,000*1.0775
After n years the population will be
So after 7 years the population will be
So rounded to the nearest whole number gives 404,699
Hope this helps
Lines like jkl are always 90 degrees so 27 + 90 is 117 so 180- 117 is 63 degrees
Answer:
64
Step-by-step explanation:
add 26 to 38
8 plus 6 is 14 and 20 plus 30 and 10 is 60 plus 4
so 64
Answer:
-21
Step-by-step explanation:
-3 * 7