3x(x+3)=5x+4 solve the equation

Mathematics

2 answers:

Dvinal [7]3 years ago

4 0

3x^2+9x=5x+4
2x^2+x^2+4x-4=0
x (2x+x)+4 (x-1)=0
x=0
2x+x=0
3x=0
x=0

x-1=0
x=1

max2010maxim [7]3 years ago

3 0

You might be interested in

Using the following set of data, calculate the lower quartile, the upper quartile, and the interquartile range. 20, 22, 25, 28,

Rufina [12.5K]

lower quartile upper quartile
{20, 22, 25, 28, }29,{ 30, 32, 33, 34}
| | |
Q1-(23.5) Q2(29) Q3(32.5)

Interquartile range= Q3-Q1=32.5-23.5=9

3 0

3 years ago

12.92 multiplied by 2.5 long multiplication

lukranit [14]

The answer to 12.92 * 2.5 is 32.3

3 0

2 years ago

What is the length of an arc given that the measure of the central angle is 30 degree and the radius is 7 cm?

pogonyaev

La longitud del arco (s) en una circunferencia, conociendo el radio (r) y el ángulo (θ) que forman los dos radios, es:

s = r∙θ

Con el ángulo en radianes

F V7 w7 :

4 0

3 years ago

About 2% of the population has a particular genetic mutation. 500 people are randomly selected.

S_A_V [24]

The standard deviation for the number of people with the genetic mutation in such groups is 3.1305.

<h3>Standard Deviation</h3>

In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean of the set, while a high standard deviation indicates that the values are spread out over a wider range.

Let X be the number of people with genetic mutation is a group of 500,

The formula of standard deviation is given as

$SD=\sqrt{n*p(1-p)} \\SD=\sqrt{500*0.02*0.98} \\SD=3.1305$