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denis-greek [22]
3 years ago
12

Anybody knows how to do this ?????

Mathematics
1 answer:
Afina-wow [57]3 years ago
3 0

Answer:

the quickest way would be to "complete the square"

on x^2 + 5x - 7

you will end up with  (x+2.5)² = 13.25

or

 y =  (x+2.5)²-13.25    

the vertex

VERTEX: (-2.5,-13.25)    

Solution/X-Intercepts: -6.14 AND 1.14  

Step-by-step explanation:

 

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The cost of renting a car is $46/week plus $0.25/mile traveled during that week. An equation to represent the cost would be y=46
julsineya [31]

The answer for part a is $60.25, for part b the answer is 76 miles, and for part c the answer is 216 miles.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

The equation to represent the cost would be y=46+0.25x

x is the number of miles.

a) What is your cost if you travel 57 miles?

Plug x = 57 in the above equation:

y = 46 + 0.25(57)

y = $60.25

b) If your cost was $65.00, how many miles were you charged for traveling?

Plug y = 65 in the equation:

65 = 46 + 0.25x

x = 76 miles

c) Suppose you have a maximum of $100 to spend for the car rental. What would be the maximum number of miles you could travel?

Plug y = 100 in the equation:

100 = 46 + 0.25x

x = 216 miles

Thus, the answer for part a is $60.25, for part b the answer is 76 miles, and for part c the answer is 216 miles.

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

5 0
2 years ago
Read 2 more answers
Katy ran a mile in 5 minutes. How many seconds are in 5 minutes? Answer without units. *
umka2103 [35]

Answer:

300 i think

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Brainliest for first correct awnser
ankoles [38]

Answer:

Step-by-step explanation:

x²y = k, where k is a real constant.

When x = 3.5, y = 8.

=> (3.5)²(8) = k, k = 98.

When y = 8/9,

we have x²(8/9) = (98).

=> x² = 110.25

=> x = 10.5 or x = -10.5.

Since we want the negative value,

the answer is x = -10.5.

6 0
3 years ago
Help me with this question please, thank you !
Salsk061 [2.6K]

Answer:

2

Step-by-step explanation:

[(27divided by (-3)-9] divided by [15-21}

=[-9-9] divided by 3

= 6divided by 3 = 2

<h2><u><em>if answer is correct so mark me as brain lest :-)</em></u></h2>

<u><em></em></u>

5 0
2 years ago
A research facility on the Isle of Shoals has 800 gallons of fresh water for a two-month period.
Lostsunrise [7]
Each member drinks 5t gallons
So 11 members will drink 11*5t=55t gallons

If the island starts with 800 gallons and 55t are removed, then
f(t)=800-55t
6 0
4 years ago
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