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3 years ago

What are the zeroes of the polynomial equation? f(x) = x^2+9x+20

2 answers:

7 0

Zeroes are when f(x)=0
0=x^2+9x+20
factor
0=(x+4)(x+5)
set each to zero
x+4=0
x=-4
x+5=0
x=-5

zeroes are f(-5) and f(-4)

Allushta [10]3 years ago

4 0

$x^2+9x+20=0\\
x^2+4x+5x+20=0\\
x(x+4)+5(x+4)=0\\
(x+5)(x+4)=0\\
x=-5 \vee x=-4$

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What is the equation in point slope form of the line passing through (0,5) and (-2,11)

IRISSAK [1]

The equation of the line passing through $(x_1,y_1)$ and $(x_2,y_2)$ is

$\frac{x-x_1}{y-y_1} =\frac{x_2-x_1}{y_2-y_1}$ . Here

$\frac{y_2-y_1}{x_2-x_1}$ is the slope of the line.

Substituting numerical values, the equation of the line is

$\frac{x-0}{y-5} =\frac{-2-0}{11-5} \\ \frac{x}{y-5} =-\frac{1}{3} \\ 3x=5-y\\ 3x+y=5$

The equation of the line is $3x+y=5$

6 0

3 years ago

a tree 20 feet tall with a circumference of 3 ft has a vine wound around 7 times. How long is the vine?

FinnZ [79.3K]

If the tree is 20 feet tall with circumference 3 feet then the length of vince is around 21 feet.

Given the height of tree is 20 feet and the circumference of tree is 3 feet.

We have to find the length of vine.

Circumference is the perimeter of a circular object. Because the trunk of a tree is in shape of circle so the perimeter of the trunk is 2πr.

We have been given the circumference of tree be 3 feet.

Circumference=2πr

Because vine is 7 times the circumference so the length of vine being:

Length of vine=7*3

=21 feet.

Hence if the tree is 20 feet tall with circumference 3 feet then the vince is around 21 feet long.

Learn more about circumference at brainly.com/question/20489969

#SPJ1

4 0

2 years ago

Read 2 more answers

Tanya finds 22 leaves Maurice finds 5 more leaves than Tanya finds how many leaves do the two children find

Mila [183]

Answer:

22 + 27 = 49

:) :)

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3 years ago

Read 2 more answers

Find the cubic equation that has -1 and 2i as roots

ryzh [129]

The cuic equation is -1 and 2i

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3 years ago

The dimensions (width and length) of room1 have been read into two variables : width1 and length1 . The dimensions of room2 have

Lorico [155]

Answer:

Total area of the two rooms = (width1length1) + (width2length2)

Step-by-step explanation:

The area of the rectangular shape is given by = Length * breadth

Therefore the area of the two rooms can be calculated using the above formula when the variables lengths and widths are given.

Area 1= Area of the first room = length * breadth= (width1length1)

Area 2=Area of the second room = length * breadth= (width2length2)

Total area of the two rooms = Area1 + Area 2

= (width1length1) + (width2length2)

5 0

2 years ago