Simplify (25x2 − 14xy + 4) − (7x2 − 9y) + (2xy + 7)

(25x^2 − 14xy + 4) − (7x^2 − 9y) + (2xy + 7)

= 25x^2 − 14xy + 4 − 7x^2 +  9y + 2xy + 7

= 18x^2 - 12xy + 9y + 11

Hope it helps.

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3