Answer-> ~29.66479 (29.7)
<u><em>Answer:</em></u>
original price of pants = $25
<u><em>Explanation:</em></u>
<u>First, let's calculate the price of shorts after discount:</u>
Assume that the price of shorts after the discount is x
Total payment = price of shorts + taxes
<u>We know that:</u>
total payment = $21
taxes = 5% = 0.05 of the price
<u>This means that:</u>
21 = x + 0.05x
21 = 1.05x
x = $20
Therefore, <em>the price of the shorts is $20 after the discount</em>
<u>Now, we will get the price of the shorts before the discount:</u>
Assume that the price of shorts before discount is y
<u>We know that:</u>
The discount was 20%
This means that Jennifer paid:
100% - 20% = 80% of the price of the shorts
<u>Therefore:</u>
80% of the price = $20
0.8y = 20
y = $25
This means that <u>price of shorts before discount was $25</u>
Hope this helps :)
Answer:
No
Step-by-step explanation:
Answer:6
Step-by-step explanation: pls mark brainliest
Answer:
I assume that this is a quadratic equation, something like:
y = -47*x^2 - 24x + (-36)
we can rewrite it as:
y = -47x^2 - 24x - 36
Ok, this is a quadratic equation and we want to find the maximum value.
First, you can notice that the leading coefficient is negative.
This means that the arms of the graph will open downwards.
Then we can conclude that the vertex of the equation is the "higher" point, thus the maximum value will be at the vertex.
Remember that for a general function
y = a*x^2 + b*x + c
the vertex is at:
x = -b/2a
So, in our case:
y = -47x^2 - 24x - 36
The vertex will be at:
x = -(-24)/(2*-47) = -12/47
So we just need to evaluate the function in this to find the maximum value.
Remember that "evaluating" the function in x = -12/47 means that we need to change al the "x" by the number (-12/47)
y = -47*(-12/47)^2 - 24*(-12/47) - 36
y = -32.94
That is the maximum value of the function, -32.94
