Step-by-step explanation:
AC = 20
AB = 18
BC² = 20²+ 18² -2•20•18•cos(52°)
BC² = 280.72
BC = √280.72
BC ≈ 16.75
Angle C:
18² = 20² + 16.75² -2•20•16.75•cos(C)
324 = 400 + 280.72 -670•cos(C)
cos(C) = -356.72/-670
cos(C) ≈ 0.53
acos(0.53) = C
C = 57.8°
Angle B:
180-52-57.8 = 70.2°
Answer:
Option A is the correct choice.
Step-by-step explanation:
Let us see the given steps of Janice's solution to find error made by her.
1.
We can find the number of stew batches by dividing total amount of meat used by amount of meat needed for each batch.
We have been given that pounds of meat was used and each batch required pounds of meat, therefore, 1st step is correct.
2.
Upon converting our mixed fractions to improper fractions we will get,
We can see that Janice converted to , which is not correct. Janice wrote 2 in the denominator of second mixed fraction instead of 3.
Janice converted a mixed number to the wrong improper fraction, therefore, option A is the correct choice.
Answer:
I think its A
Step-by-step explanation:
The answer to your question is -34
Answer:
A recent study shows that about 43% of medical doctors have a solo practice with a margin of error of 4.6 percentage points.
Step-by-step explanation:
Given that a random sample of 311 medical doctors showed that 135 had a solo practice.
Sample proportion = 0.43
Std error of sample proportion =
Margin of error 90%
Margin of error in percent = 4.6%
Hence correction option is:
A recent study shows that about 43% of medical doctors have a solo practice with a margin of error of 4.6 percentage points.