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WARRIOR [948]
3 years ago
7

Does f(x) = 5-4x-x^2 have maximum or minimum

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
5 0

Answer: when you graph it, it opens down so it will have a maximum

Step-by-step explanation:

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A linear function that represents the number of hot dogs purchased at a football game is compared to a different linear function
Vsevolod [243]

Answer:

Key features: the functions can not be parallels, this means that their respective slopes can not be equal or multiple to the other

Step-by-step explanation:

Take for instance 2 linear functions,  and

If they intersect in some point in the space, say that is

Then (x1,y1)=(x3,y3), (x2.y2)= (x3,y3)

So, we can compare the two functions and get the following result;

It tells us that if M=m, we get an error, meaning that the functions are in fact parallels and there is no way that they meet in some point.

hope this helps!

5 0
3 years ago
Ally surveyed 5 classrooms. She wanted to know the number of students in each class who love painting. The data she collected fr
dedylja [7]

Answer:

anser is 9 look at top for explanation

Step-by-step explanation:

givan that sally 5 classes is 10 7 9 11 8 so the anser is 9

4 0
3 years ago
Read 2 more answers
For A-D, choose Yes or No to indicate whether the situation can be represented by a negative number.
dexar [7]

Answer:

A. NO

B. YES

C: YES

D: NO

Step-by-step explanation:

4 0
2 years ago
How many possible committees of 4 people can be chosen from 15 men and 20 women so that at least two women should be on each com
Mnenie [13.5K]

<span>If there has to be 2 men and 2 women, we know that we must take a group of 2 men out of the group of 15 men and a group of 2 women out of the group of 20 women. Therefore, we have:

(15 choose 2) x (20 choose 2)


(15 choose 2) = 105

(20 choose 2) = 190

190*105 = 19950

Therefore, there are 19950 ways to have a group of 4 with 2 men and 2women.</span>

 

<span>If there has to be 1 man and 3 women, we know that we must take a group of 1 man out of the group of 15 men and a group of 3 women out of the group of 20 women. Therefore, we have:

(15 choose 1) x (20 choose 3)


(15 choose 1) = 15

(20 choose 3) = 1140

15*1140 = 17100

Therefore, there are 17100 ways to have a group of 4 with 3 women and 1 man.</span>

 

<span>We now find the total outcomes of having a group with 4 women.

We know this is the same as saying (20 choose 4) = 4845</span>

Therefore, there are 4845 ways to have a group of 4 with 4 women.

 

We now add the outcomes of 2 women, 3 women, and 4 women and get the total ways that a committee can have at least 2 women.

 

19950 + 17100 + 4845 = 41895 ways that there will be at least 2 women in the committee


5 0
3 years ago
One gallon of paint covers 400 square feet. What is the least amount of paint needed to paint the walls of a room in the shape o
Gnom [1K]

Answer:

1.8 gallons would be used.

Step-by-step explanation:

TOTAL AREA TO BE PAINTED:

     2 x 10 x 20  +   2 x10x 16 = 720 ft2

720 ft2 / 400 ft2 /gal = 1.8 gal  

7 0
2 years ago
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