Answer:
40°
Step-by-step explanation:
∠AOE and ∠COD are vertical angles meaning they have the same value.
Wouldn’t it be -3? i’m not sure tho but if y=2x-3 and the circle is (x-3)+(y+1) they both have (-3)
Answer:
a) 0.194
b) $440.8
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = $9.40
Standard Deviation, σ = $4.40
Formula:
Standard error due to sampling =
a) P(tips from 40 parties > $400)
Thus, the average pay is
P(x > 10)
Calculation the value from standard normal z table, we have,
b) We have to find the value of x such that the probability is 0.01
Calculation the value from standard normal z table, we have,
Thus, the mean tip is $11.02
Tip for 40 parties =
Thus, he earns $440.8 on the best 1% of such weekends.
Answer:
Step-by-step explanation:
Here two triangles are given to us , which are attached to each other . Here we can use the concept of<u> </u><u>Trigonometry</u> to find out the value of x. The angles of the triangle are 60° and 45° . Let the common side be p .
Step 1: <u>Use </u><u>the </u><u>ratio </u><u>of </u><u>tan </u><u>in </u><u>upper</u><u> </u><u>triangle</u>
Substitute the respective values ,
Cross multiply ,
Step 2: <u>Use </u><u>the </u><u>ratio</u><u> of</u><u> </u><u>cos </u><u>in </u><u>lower </u><u>tr</u><u>i</u><u>angle</u>
Substitute the respective values ,
Cross multiply ,
Put the approximate values of √2 and √3
This equals to ,
<u>Hence</u><u> the</u><u> </u><u>va</u><u>l</u><u>ue </u><u>of </u><u>x </u><u>is </u><u>8</u><u>.</u><u>5</u><u>7</u><u> </u><u> </u><u>.</u>