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andrezito [222]
3 years ago
5

Use the vertex formula to find the vertex of the quadratic function f(x) = -x2 + 4x - 8.

Mathematics
1 answer:
Irina18 [472]3 years ago
8 0
The vertex of f(x)=-x2+4x-8 is (2, -4)
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-3 1/9 - (-8 1/3) = -3 1/9 + 8 1/3 = 5 2/9
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Alice had 3 1/4 pounds of flour at the beginning of the week. At the end of the week, she had 2 3/4 pounds. How much has she use
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6 divided by 3/5 in simplest form
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Each day that a library book is kept past its due date, a $0.30 fee is charged at midnight. Which ordered pair is
mihalych1998 [28]
Let's say the number of days library book is late is X, and the total fee is Y.

Liability charges $0.30 dollars as a fee for being 1 day late,

For being 1 day late, fee charge is: 1* $0.30
So, for X days the charge would be: X*$0.30.

Total charge for being X days late is Y, Which means: Y= 0.30 * X.

Now We would have to check all the viable solutions in the answer to see if they satisfy the equation Y= 0.30 * X

Option one(-3, -0.9) and two (-2.5, -0.75) Would not be a viable solution because the value of number of days can not be negative and in option one and two, value of days -3 and -2.5 is negative.

Option three(4.5, 1.35) can not be correct because library charges fee for a full day so the number for days would be a whole number. Library would not charge for 4.5 days, they would either charge of 4 days or 5 days because 4.5 is not an whole number.


Option four(8, 2.40) is the correct answer because it satisfies our equation;

Y= 0.30 * X

2.40= 0.30 * 8

2.40 = 2.40.


Fourth option (8, 2.40) is the only viable solution to this question.
6 0
3 years ago
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