Answer:
−2x^2+6x
Explanation:
You just have to distribute meaning you have to multiply -2x to the equation.
Answer:
x = 23.5
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
sin theta = opp / hyp
sin 54 = x / 29
29 sin 54 = x
x=23.46149
To the nearest tenth
x = 23.5
Answer:
74
Step-by-step explanation:
Average is the sum of all the numbers divided by the number of numbers.
We will take average of Quizzes, Homeworks, and Tests. And multiply that by respective weights and find the weighted average of the 90%.
Quiz Avg:
(84+90+72)/3 = 82
Homework Avg:
(80 + 100 + 90)/3 = 90
Test Avg:
(64+72)/2 = 68
Now, weighted avg = 
Rounding it off, we get "74", the correct answer.
Answer:
The sample mean is of 266.5 dollars.
Step-by-step explanation:
Sample mean:
The sample mean is given by the sum of all values in the sample divided by the number of values.
In this question:
12 values.
The sum is:
115 + 370 + 250 + 93 + 540 + 225 + 177 + 425 + 318 + 182 + 275 + 228 = 3198
The sample mean is:

The sample mean is of 266.5 dollars.