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makvit [3.9K]
3 years ago
9

What is the vertex of the quadratic function below?

Mathematics
1 answer:
mina [271]3 years ago
3 0

y =  - 3 {x}^{2}  - 12x + 17 \\ x_0 =  \frac{ - b}{2a }  =  \frac{12}{ - 6}  =  - 2 \\ y_0 =  - 3 \times  {( - 2)}^{2}  - 12 \times ( - 2) + 17 = 29

Maybe i did something wrong, maybe your question is incorrect, but the vertex is (-2; 29)

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a car rental company charges $30 per day to rent a car plus $0.02 per mile driven. which equation represents c, the total cost t
Virty [35]

Answer:

c=0.02(m)+30(5)

or

c= 150+0.02(m)

or

c=0.02(m)+150

or

c=30(5)+0.02(m)

Step-by-step explanation:

This is because c, or cost is equal to 30 dollars a day as a base fee or 150 total for five days plus 0.02 per mile. So, if you multiple the mileage driven by 0.02 and add 150 for the 30$ per day at 5 days. This is your equation

These are just different ways you could write that since it is clear you have a multiple choice question

7 0
3 years ago
How do I solve this
Veronika [31]

Answer:

P(A or B) = 1.16

Step-by-step explanation:

Given probability:

Probability of event A = P(A) = 0.46

Probability of event B = P(B) = 0.7

P(A and B) = 0.43

Find:

P(A or B)

Computation:

If A is an incident and B is a separate event, P(A or B) is the possibility of either A, B, or both events occurring.

P(A or B) = P(A) + P(B)

P(A or B) = 0.46 + 0.7

P(A or B) = 1.16

5 0
3 years ago
Find the sale price of a $90 item after a 50% discount.
Gekata [30.6K]

Answer:

The sale price of a $90 item after a 50% discount is $45.

3 0
3 years ago
Evaluate -1 - [-z] where z = -2
slega [8]

\huge\textbf{Hey there!}

\huge\textsf{-1 - [-z]}\\\\\huge\textsf{= -1 - [- -2]}\\\\\huge\textsf{= -1 - - 2}\\\\\huge\textsf{= -1 + (-2)}\\\\\huge\textsf{= -1 - 2}\\\\\huge\textsf{= -3}\\\\\\\huge\textbf{Therefore, your answer is: \boxed{\mathsf{-3}}}\huge\checkmark

\huge\text{Good luck on your assignment \& enjoy your day!}

~\frak{Amphitrite1040:)}

5 0
3 years ago
Read 2 more answers
Jessica deposited $2000 into an account with a 7.6% annual interest rate, compared quarterly. Assuming that no withdrawals are m
joja [24]

Answer:

Step-by-step explanation:

use

i=prt

i=interest

p= principal value

r=rate

t=time

now you want to find time then it will be

t= i/pr

put values

t= 3722/(2000*7.6%)

t= 2 years

calculation is in fraction but your question given you annual interest so time will also be 2 years not in months

8 0
3 years ago
Read 2 more answers
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