(3x+4)+(5x2-1)+(2x+6)
remove unnecessary parenthesis
3x+4+(5x2-1)+(2x+6)
3x+4+(10-1)+2x+6
subtract the numbers
3x+4+9+2x+6
collect the like terms
5x+4+4+9+6
5x+19
Let x be the first number
Let y be the second number
x+y=61
x-y=37 --> x=37+y
(37+y)+y=61
37+2y=61
2y=61-37
2y=24
y=12
x+y=61
x+12=61
x=61-12
x=49
Therefore the numbers are 49 and 12
Hope I helped :)
Answer:
0.430
Step-by-step explanation:
The answer is: 28.59 (letter B)
Solution:
Total cost before tax and discount:
9.99 x 3 = 29.97
total discount:
29.97 x 0.10 = 2.997
total cost - discount:
29.97-2.997=26.973
Tax:
26.973 X 0.06 =1.61838
Total cost plus tax:
<span>26.973 + 1.61838 =28.59138 round to only 2 decimals: 28.59</span>
Answer:
b2-4ac , ans is negative . Should have no real roots .
