Answer:
1) −5≠−4
False
2) 12≠15
False
Step-by-step explanation: I guess this is what you looking for, hope this help
Answer:
18.45
Step-by-step explanation:
You multiply 2.25 by 8.2
Answer:
Step-by-step explanation:
We want to write the quadratic equation whose roots are 2 and -2, and whose leading coefficient is 4.
Since 2 and -2 are roots, 
are factors of this quadratic function.
The factored form is given as: 
Since the leading coefficient is 4, a=4
Therefore the equation becomes:
Recognize and expand using difference two squares.
The required equation is:
GCF is the greatest number that distributes the three kinds of tiles at the same time, because this will let Marco to use the least number of each tile and so he will be capable to form the maximum number of stones. To find the greatest common factor you have to decompose each number in the prime factors and multiply only the common factors each raised to its lower exponent.For example: 45, 90, and 75 are the given:45 = 3^2*5
90 = 2*3^2*5
75 = 3*5^2
The common factors with their minimum exponents are: 3 and 5, the product would be 15. Thus the maximum number of stones is 15. By multiplying the GCF times the sum of tiles in each stone, he will find out how many tiles of each type he has in total.
Answer:
11. C. 315< 6561
12. D. 729>243
13. C. 1
14. B. 1/16
15. B. 1.61*10^8
16. A. 8.5*10^-9
17. A. 49t^8
18. C. -7x^2+8x
19. A. -12k^4-16k^3+20k^2
20. D. 2k^2-7k-4
I didn't guess. It would just take a long time to show all the work I did
