I will be glad to help you in the comments. I do need to know though, what is the class this is presented in? Is this algebra, or calculus? Depending on the class, we have different approaches.
11 i just kinda added 3 to 8 because 15-12 is 3 and like yeah i hope that makes a little bit of sense
Answer:
The answer is C
Step-by-step explanation:
Move the nine to the other side of the equal sign
Use the quadratic formula
Find a, b, and c
A=2, B=1, C=-10
Plug them in
1 squared minus 4(2)(-10)
1+80
81
Square root of 81=9
<u>-</u><u>1-9</u><u> </u> <u>-1+9</u>
4 4
<u>-</u><u>10</u><u> </u> <u>8</u>
4 4
Simplify
<u>-5</u> <u>2</u>
2 1
<u>-</u><u>5</u><u> </u> 2
2
6 1/4(x-2/3)=93/8 would mean x=7.972
To check, plug the x and y values into the inequality
2x-3y<u><</u>7
2(5)-3(-4)<u><</u>7
10+12<u><</u>7
22<u><</u>7
Clearly, 22 is not less than or equal to 7, so this point is <u>not</u> a solution to the linear inequality