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3 years ago

What are the roots of the polynomial equation x2 + x- 72 =0

Mathematics

1 answer:

Alex17521 [72]3 years ago

5 0

First, you can factor them into (x-8)(x+9)=0 then set x-8=0 and x+9=0, in which you get X = 8 or X = -9

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What’s the v? <br> Im stuck on this

ira [324]

Answer:

V=2,685,410.22

Step-by-step explanation:

with rectangles, to find volume you use this formula: V=L times W times H

volume equals length times width times height

<em>Now with this info lets use the formula:</em>

<u>Length times width:</u>

30.3 times 20.75=628.75 or base.

<em>Sometimes people use base times height, base is length times width</em>

<u>Base times height:</u>

628.75 times 4,271.2= 2,685,410.22

I really hope this helps u!

pls give a brainliest and a thx ;)

if there is an error let me know in comments and i will fix my answer accordingly

6 0

3 years ago

In a competition between players X and Y, the first player to win three games in a row or a total of four games wins. How many w

OLEGan [10]

Answer:

The competition can be played in 7 different ways

Step-by-step explanation:

First game : X

Second game : Y

Third game : Y

After that either X or Y can win

<h3>¹Case - 1: Y wins the fourth game:</h3>

The competition ends with Y winning as he/she won 3 games in a row

<h3>Case - 2: X wins the fourth game:</h3>

more games are required to decide the winner

<h3>Sub-case - a: X wins the fifth game:</h3>

more games are required to decide the winner

<h3>²Sub-sub-case - i: X wins the sixth game:</h3>

The competition ends with X winning as he/she won 3 games in a row

<h3>³⁻⁴Sub-sub-case - ii: Y wins the sixth game:</h3>

The competition ends after the seventh game. Whoever wins seventh game wins the competition as he/she would've won 4 games in total by then.

<h3>Sub-case - b: Y wins the fifth game:</h3>

more games are required to decide the winner

<h3>⁵Sub-sub-case - i: Y wins the sixth game:</h3>

The competition ends with Y winning as he/she won 4 games in total

<h3>⁶⁻⁷Sub-sub-case - ii: X wins the sixth game:</h3>

The competition ends after the seventh game. Whoever wins seventh game wins the competition as he/she would've won 4 games in total by then.

∴<u>The competition can be played in 7 different ways</u>

7 0

3 years ago

Which elephants weight is 2.86 tons when rounded to the nearest hundredth.

Naily [24]

Answer:

An elephant

Step-by-step explanation:

2.86 tons is the weight of an elephant.

5 0

3 years ago

Median mark of 3,2,0,1,9,12,3,5

adell [148]

Answer: 3

Step-by-step explanation:

Median is a statistical measure that determines the middle value of a dataset listed in ascending order.

arranged data is 0,1,2,3,3,5,9,12

number of data terms=8

if data is even then

median=(3+3)/2=3

8 0

1 year ago

Read 2 more answers

A block of wood 3.0 cm on each side and has a mass of 27 g. What is the density of this block.

Sidana [21]

The density is 1g/cm³. To calculate density, the equation density=mass/volume is used. You already know the mass, 27g, but you need the volume. The equation for volume is length x width x height. Plug in your side measure 3, to get 3 x 3 x 3, which is 27cm³. Now, just divide the mass by the volume. 27g/27cm³= 1g/cm³

8 0

3 years ago