Answer:
mean = 10
Step-by-step explanation:
The mean is calculated as
mean =
=
=
= 10
Step-by-step explanation:
2 inches on the map => 2 miles in reality
So 8 inches on the map => 8 miles in reality.
The distance between the park and the school is 8 mi.
1. Graph using y = mx + b
a) y = 3x - 4 (m = 3, b = -4)
b) y = x + 1 (m = 1, b = 1)
c) y = -2x + 2 (m = -2, b = 2)
d) y = -x - 3 (m = -1, b = -3)
2. Graph using x- and y-intercepts
a) 2x + 3y = 6 (x-intercept is 3, y-intercept is 2)
b) x - 2y = -8 (x-intercept is -8, y-intercept is 4)
c) -3x + y = -3 (x-intercept is 1, y-intercept is -3)
d) -4x - 2y = 6 (x-intercept is -3/2, y-intercept is -3)
3. Graph using a table
a) y = 2x -1
(Make a table using values -1, 0, and 1 in the "x" column. The values in the "y" column will be -3, -1, and 1)
b) 2x + y = 4
(Make a table using values 0, 1, and 2 in the "x" column. The values in the "y" column will be 4, 2, 0)
Answer:
The answer is 75 tests for 150 people.
Step-by-step explanation:
Firstly, with 150 people, we can divide into 15 groups; and the probability of disease is 0.04, there are 6 persons who possibly get disease.
Therefor, the maximum number of groups with an individual getting disease is 6. Then, 6 * 11 tests = 66 tests required.
15 groups - 6 groups with disease = 9 groups of negative with 9 tests.
In conclusion, there are 75 tests required.
Answer:
See attached photo.
Step-by-step explanation:
x = -2y^2 + 4y + 2