Answer:
c = - 2
Step-by-step explanation:
Given inverse function
(5) = - 1 , then
f(- 1) = 5 , that is
- 2c + c(- 1) - (- 1)² = 5
- 2c - c - 1 = 5
- 3c - 1 = 5 ( add 1 to both sides )
- 3c = 6 ( divide both sides by - 3 )
c = - 2
In (A) statistics class Wilson's students earn a higher ratio of a's to b's.
<h3>
What are ratios?</h3>
- A ratio in mathematics describes how many times one number contains another.
- For example, if a dish of the fruit contains eight oranges and six lemons, the orange-to-lemon ratio is eight to six.
- Similarly, the lemon to orange ratio is 6:8, while the orange to total fruit ratio is 8:14.
To find the higher ratio:
Given -
- Geometry class = a:b = 12:20 = 3:5
- Statistics class = a:b = 11:15
As we can observe that 3:5 < 11:15.
Therefore, in (A) statistics class Wilson's students earn a higher ratio of a's to b's.
Know more about ratios here:
brainly.com/question/2328454
#SPJ4
Answer:
x = 3
Step-by-step explanation:
y =4x - 2
4 x 3 = 12
Answer:
The smallest amout that the school should charge is $4.70.
Step-by-step explanation:
p = -200t2 + 3600t - 6400
p = -200 x 4.7 x 2 + 3600 x 4.7 - 6400
p = -1880 + 16920 - 6400
p = 15120 - 6400
p = 8720
