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Crazy boy [7]
3 years ago
11

Find the standard form of the quadratic equation: f(x)=(2x-1)(x+4)

Mathematics
1 answer:
katrin [286]3 years ago
3 0

Answer:

f(x) =  2x ^{2}  + 7x  -  4

Step-by-step explanation:

\because \: f(x) = (2x - 1)(x + 4) \\  \therefore \:f(x) =  2x(x + 4)  - 1(x + 4) \\ \therefore \:f(x) =  2x ^{2}  + 8x -   x  -  4 \\ \therefore \:f(x) =  2x ^{2}  + 7x  -  4 \\

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On Saturday, you bowl at Mar vista Bowl, where renting shoes costs $2 and each game bowled is $3.50. On Sunday, you bowl at Pinz
7nadin3 [17]

Answer:

  • 12 games

Step-by-step explanation:

Let the number of games is g

<u>Total cost at Mar Vista:</u>

  • 3.5g + 2

<u>Total cost at Pinz:</u>

  • 3.25g + 5

<u>Since same amount spent in both places, we have:</u>

  • 3.5g + 2 = 3.25g + 5
  • 3.5g - 3.25 = 5 - 2
  • 0.25g = 3
  • g = 3/0.25
  • g = 12
8 0
2 years ago
Collins has a part-time job as a dog walker. The table below shows the amount of money Collins earned for different numbers of h
kondor19780726 [428]

Answer:

See below.

Step-by-step explanation:

Part A:

For Dog walking, he earns $30 for 5 hours of work.

He earns $36 for 6 hours of work.

$30/5 hours = $6/hour

$36/6 hours = $6/hour

He earns $6/hour dog walking.

For 8 hours, he earns 8 hours * $6/hour = $48

To earn $66, he works 66/6 = 11 hours.

5 30

6 36

8 48

11 66

Part B:

He earns $7/hour for yard work, so multiply the number of hours by 7 to find the money he earns.

Table for yard work

Hours     Money

5             $35

6             $42

8             $56

Part C:

For 5 hours, he earns $35 for yard work and $30 as a dog walker.

$35 - $30 = $5

3 0
2 years ago
Which equation would you use to solve the following situation?
Igoryamba

Answer:p=7

Step-by-step explanation:because 4 x 7 =28

4 0
3 years ago
Question 5 (1 point) What is the mean of this set of data: 78, 79, 80, 80, 89, 89, 92, 93, 94, 95, 95, 95 Round your answer to t
Len [333]
88.3

add all the numbers, you get 1,059 and divide that by how many numbers there are which is 12 and you get 88.3
7 0
2 years ago
Workout the median 6266 6626 6622 6226 6662 6222 7466
sasho [114]

Answer:

Step-by-step explanation:

the median would be 2,2 just the middle number/numbers if it has 1 # thats the median if it has 2 thats still the median

7 0
2 years ago
Read 2 more answers
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