3 years ago

Quadratic functions whose zeros are -2 and -9

Mathematics

1 answer:

nika2105 [10]3 years ago

6 0

Answer: f(x)= $x^{2} +11x+18$

Step-by-step explanation:

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Evaluate the determinant for the following matrix 1, 4, 4, 5, 2, 2, 1, 5, 5

Oliga [24]

Answer:

Step-by-step explanation:

The determinant of this matrix is zero (0).

6 0

3 years ago

if you make a scale drawing of a tree using the scake 5in =27ft uf the tree is 67.5 ft tall how tall is the scale drawing

shtirl [24]

To get from 27 to 67.5 you multiply 27 by 2.5 so you need to do the same to the 5
5x2.5=12.5
=12.5in

3 0

3 years ago

Elliot has a total of 26 books. He has 12 more fiction books than nonfiction books. Let x represent the number of fiction books

AlladinOne [14]

<u>Answers</u>

19 fiction books

7 nonfiction books

<u>Explanation</u>

x + y = 26 ............................................. (i)

x – y = 12 ............................................ (ii)

Elliot added the two equations and the result was

2x = 38.

Dividing both sides by 2;

x = 19

There are 19 fiction books.

Substituting x in equation (i),

x + y = 26 when x = 19

19 + y = 26

y = 26 - 19

= 7

There are 7 nonfiction books

4 0

3 years ago

Read 2 more answers

Dean Halverson recently read that full-time college students study 20 hours each week. She decides to do a study at her universi

romanna [79]

Answer: The p-value is 0.154.

Step-by-step explanation:

Since we have given that

We claim that

Null hypothesis :

$H_0:\mu=20$

Alternate hypothesis :

$H_1:\mu$

Population mean = 20 hours

Sample mean = 18.5 hours

Sample standard deviation = 4.3 hours

Sample size n = 35

So, test statistic would be

$z=\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{18.5-20}{\dfrac{4.3}{\sqrt{35}}}\\\\z=\dfrac{-1.5}{0.726}\\\\z=-2.066$

So, the p value would be 0.154.

Hence, the p-value is 0.154.

4 0

3 years ago

Convert 6 miles to meters

Iteru [2.4K]

Answer:

9656.06 meters

Step-by-step explanation:

5 0

2 years ago