What is the value of z in the equation 2z + 7 = -5? a. -6 b. -1 c. 1 d. 6
2 answers:
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Answer:
Percentage score will be 83.33 %
Step-by-step explanation:
We have given Antonette gets 70 % on 10 problem test
Let consider here here total problem = total marks
So marks get 10 10 problem test = 10×0.7 = 7
Marks get in 20 problem test = 20×0.8 = 16
And marks get in 30 problem test = 30×0.9 = 27
Now total marks get get by Antonette = 7 +16 + 27 = 50
And total marks = 60
So percentage score of Antonette %
Answer:
A
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos X = =
=
, then
∠ X = (
) ≈ 44° ( to the nearest degree ) → A