Answer:
i thinki the answer is b
Step-by-step explanation:
Minus z both sides
0=x^2+wx+z
we can use quadratic formula or manually complete the square
let's use quadratic
for
0=ax^2+bx+c
given
0=1x^2+wx-z
a=1
b=w
c=-z
or
Answer: each number represents the sum of the two numbers
Step-by-step explanation:
I’ve never done this question before but bright to sum of the numbers together
Answer: When the mean doesn't show what the results really mean. The mean treatment outcome (or average) is often reported in comparing the results of different groups in a clinical trial. ... The mean may be misleading because of uneven spread in the results or uncertainty about whether patients had an important improvement.
Step-by-step explanation:
Answer:
52º, 128º
Step-by-step explanation:
8. Because ∠6 is an opposite angle to ∠5, ∠6=∠5=52º;
9. Because line a//line b, ∠6=∠4=52º, so ∠7=180º–52º=128º