Do you have any multiple choice questions? because I would need some choices so i could help you answer the question.
The usefulness is that this data allows you to understand how well students perform with their instruction, based on a standardized test. The limitation is that the scores don't account for different situations that may affect the results you receive.
Answer:
3(2c+d)−d
Distribute:
=(3)(2c)+(3)(d)+−d
=6c+3d+−d
Combine Like Terms:
=6c+3d+−d
=(6c)+(3d+−d)
=6c+2d
=6c+2d
Step-by-step explanation:
Answer:
A)
Step-by-step explanation:
the solution of a squared equation is
x = (-b ± sqrt(b² - 4ac)) / (2a)
in our case
a = 1
b = 8
c = 22
x = (-8 ± sqrt(64 - 88))/2 = (-8 ± sqrt(-24))/2 =
= (-8 ± sqrt(4×-6))/2 = (-8 ± 2×sqrt(-6))/2 =
= -4 ± sqrt(-6) = -4 ± i×sqrt(6)
