Im pretty sure its A, but dont count on me!!! i hope it helps :/
Answer:
<h2>See the explanation.</h2>
Step-by-step explanation:
It is told that, 330 students that are surveyed, are 9th graders.
Hence, 0.55 represents 330 students, that is 1 represents
= 600 students.
The number of 9th grade students whose favorite elective is music is represented by 0.18.
1 ≡ 600
0.18 ≡
= 108.
The percentage of students whose favorite elective is home economics and are also in 10th grade is
= 6%.
Answer:

Step-by-step explanation:
Given
The attached triangle
Required
Find y
The attached triangle is isosceles; so:

Also, we have:
--- angles in a triangle
Substitute: 

Collect like terms


Answer:
$10.23
Step-by-step explanation:
$2.19+$1.39+$3.69+$2.29=9.56
9.56 x 1.07=10.2292
You round to the nearest tenths place
$10.23
The answer is 90 because 360/4 (since it is a quadrilateral) is 90 degrees