Answer:
a. Andrea is incorrect
b. By solving for x, we find that x does not equal 8, but it is equal to 7.
Step-by-step explanation:
8+4=2(x-1)
8+4=2x-2
12=2x-2
14=2x
x=7
100-16=84
84÷7=12
there are 12 students in the class because first you subtract 16 from 100 so you have that left then you divide that by 7 to find out how many students get 7 markers.
My guess would be 7, but what is the context?
For this case we have the following polynomial:
x2 + px-35 = 0
We can factor the polynomial.
Rewriting we have:
(x-7) * (x + a) = 0
The value of a is given by:
-7 * a = -35
a = 35/7
a = 5
Substituting we have:
(x-7) * (x + 5) = 0
Therefore, the value of p is:
p = -7 + 5
p = -2
Answer:
the other root is:
x = -5
The value of the coefficient is:
p = -2
