Answer:
a. True. Rational numbers are closed under the sum operation, therefore, the sum of two rational numbers is always a rational number.
b. True. irrational numbers are closed under the sum operation, therefore, the sum of two irrationals numbers is always a irrational number.
c. True. The square of a real number is always a number greater than zero, and the sum of two numbers greater than zero is greater than zero.
d. True. The real numbers are closed under the product operation, then if a and b are reals numbers, the product ab is also a real number.
Step-by-step explanation:
62,900
21,000
126,300
856,700
Answer:
C
Step-by-step explanation:
Adding we get:
-2x^2+3x^2 + 7x - 8x - 6 -1 = X^2 -x-7
Answer:
A. 6 dot 6 equals 36.
Step-by-step explanation:
Hope this helps :)
I do not know but i can give you about 2 - 3 tips.
First get a ruler and figure out how many centimeters are in a inch.
Then you will multiply 12 and how many centimeters are in a inch.
And that is how you will get your answer.