Answer:
d
Step-by-step explanation:
cannot be a or c cause it has a negative sign in front of it causing it to reflect over y axis. Cannot be B cause it doesn't have two coefficients with X. I also graphed it.
Alrighty, so you said, simplify: 4t (2s - 7)
When there is a variable or number outside of the parenthesis, it means that it wants the whole thing multiplied by that number.
So, your right way to do this is:
4t (2s) + 4t (-7)
Simplify.
8st - 28t
So, the student incorrectly simplified them because she didn't multiply -7 by 4t like they should have.
~Hope I helped!~
E = 75% = 0.75, Work Output = Useful Work = 240 J, Work Input = ?
Efficiency, E = Work Output / Work Input
0.75 = 240 / Work Input
Work Input = 240 / 0.75
Work Input = 320
Amount of work supplied = Work Input = 320 J
I hope this explains it.
The pattern is a 3 is added every time so to find the next two numbers add 1 and then another 1.
Since both is equal to p(a), you can set them as equal to each other:
15 = 2a - 3
18 = 2a
9 = a
