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natita [175]
2 years ago
7

Write a polynomial function with zeros -3,5,8​

Mathematics
1 answer:
klemol [59]2 years ago
3 0

Answer:

x^3-10x^2+x+120

Step-by-step explanation:

Assuming you mean roots -3, 5, 8

These happen when we have (x+3)(x-5)(x-8)=0

Expand this

(x^2-2x-15)(x-8)=0

=x^3-2x^2-15x-8x^2+16x+120

=x^3-10x^2+x+120

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What is y-intercept of the graph
Kipish [7]

Answer:

  1a. y-intercept: 12

  1b. slope: -3/2

  1c. equation: y = -3/2x +12

  2a. y-intercept: -9

  2b. slope: 2

  2c. equation: y = 2x -9

Step-by-step explanation:

<h3>1.</h3>

A) We observe the pattern to be <em>x-values in the table increase by 2, while y-values in the table decrease by 3</em>. We notice the first x-value is 2, so extending the table upward to x=0 would tell us the y-intercept. That is, adding 3 to the first y-value will give the y-intercept as (x, y) = (0, 12).

B) We have already observed that the "rise" (change in y) is -3 for each "run" (change in x) of 2. The slope is the ratio of these changes:

  slope = m = rise/run = -3/2

C) From the above, we know that m=-3/2 and b=12. Putting these values into the equation for the line gives ...

 y = -3/2x +12

__

<h3>2.</h3>

A) We observe the pattern to be <em>y-values increase by 2 while x-values increase by 1</em>. As before, we can find the point that would go before the first one shown in the table. It will have an x-value of 0 and a y-value of -9.

  the y-intercept is -9

  the slope is 2/1 = 2

  the equation is y = 2x -9

7 0
2 years ago
(1). An Aeroplane leaves an airport, flies due North for 2 hrs at 500km/h. It then flies on a bearing of 053 degree at 300km/h f
Agata [3.3K]

Answer:

1. 1320.7 km

2. 015.8 degrees.

3. 461.8 km/h.

Step-by-step explanation:

4 0
3 years ago
Rob is saving to buy a new MP3 player. For every $15 he earns babysitting, he saves $5. On Saturday, rob earned $75 babysitting.
DaniilM [7]

Answer:

he saved $25

Step-by-step explanation:

The answer is 25 because 15 multiplied by 5 is 75 and 5 multiplied by 5 is 25.

3 0
3 years ago
HELP HELP PLEASE!!!! D: WHICH TRIANGLES ARE SIMILAR TO TRIANGLE ABC?
Andreas93 [3]

Answer:

HGI

Step-by-step explanation:

i hope this helps ^^"""

nvm-its wrong TvT

8 0
2 years ago
Express ratio in the simplest form 25:70
SpyIntel [72]
25/70 = 5/14
5:14
The ratio in the simplest form is 5:14
3 0
3 years ago
Read 2 more answers
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