Answer:
68%
Step-by-step explanation:
Answer:
√39
Step-by-step explanation:
use the Pythagorean Th because the triangle is right
8² = 5² + x²
8²-5² = x²
√64-25 = x
√39 =x
Answer:
78.54
Step-by-step explanation:
Area of a circle = pi time radius power of 2
A = pi*r^2
A = 3.14 * 5^2
A = 3.14 * 25
A = 78.54
The relation which is a function is; Choice A;<em> {(6, −4), (5, 8), (−3, 6), (−4, −4)}</em>
<h3>What is a function?</h3>
In mathematics, a function from a set of values for variable x to a set of values for variable y assigns to each element of x only one element of y. The set X is called the domain of the function and the set Y is called the codomain of the function.
On this note, since in Choice A, each x-value is mapped distinctively to one value of y, Choice A is a function.
Read more on functions;
brainly.com/question/10439235
Answer:
85.7
Step-by-step explanation:
Given that two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and Section B had 20 students who had a mean score of 90.
Section A total score = 15*80=1200
Section B total score 20*90 = 1800
Overall total score=3000
Overall total students = 15+20 =35
Hence overall mean =
rounding off to one decimal place
overall mean = 85.7