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4 years ago

What is the difference of the polynomials

Mathematics

1 answer:

kobusy [5.1K]4 years ago

8 0

What's the problem tho

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Use the quadratic formula to find the roots: -3x^2 + 27x = 42

ch4aika [34]

Answer:

x=2,x=7

Step-by-step explanation:

-3x^2+27x=42

x^2-9x+14=0

x^2-2x-7x+14=0

x*(xi2)-7(x-2)=0

(x-2)*(x-7)=0

x-2=0

x-7=0

x=2

x=7

8 0

3 years ago

2.6.5 A plant physiologist grew birch seedlings in the green-house and measured the ATP content of their roots. (See Example 1.1

Ilya [14]

Answer:

$(a)\ \bar x = 1.19$

$(b)\ \sigma_x = 0.18$

Step-by-step explanation:

Given

$n = 4$

$x: 1.45\ 1.19\ 1.05\ 1.07$

Solving (a): The mean

This is calculated as:

$\bar x = \frac{\sum x}{n}$

So, we have:

$\bar x = \frac{1.45 + 1.19 + 1.05 + 1.07}{4}$

$\bar x = \frac{4.76}{4}$

$\bar x = 1.19$

Solving (b): The standard deviation

This is calculated as:

$\sigma_x = \sqrt{\frac{\sum(x - \bar x)^2}{n - 1}}$

So, we have:

$\sigma_x = \sqrt{\frac{(1.45 -1.19)^2 + (1.19 -1.19)^2 + (1.05 -1.19)^2 + (1.07 -1.19)^2}{4 - 1}}$

$\sigma_x = \sqrt{\frac{(0.1016}{3}}$

$\sigma_x = \sqrt{0.033867}$

$\sigma_x = 0.18$

4 0

3 years ago

Jonny makes $15 per hour working at Target. He gets a bonus

EastWind [94]

Step-by-step explanation:

he get one hour=15$

he get bonus end of the month=85$

total 685$- bonus 85$=600$
600$÷one hour 15$= 40 hours

6 0

3 years ago

What is 3x 4=5x-10? need some help with this. never been good at solving these.

GrogVix [38]

3x4=5x-10
12=5x-10
22=5x
x=4.4

3 0

3 years ago

I have 3 different ones now. I apologize for the relentless questions.

Minchanka [31]

Answer:

$\frac{1}{4x}$

Step-by-step explanation:

The negative exponential can be represented with the help of fractions. By this way, we also make the negative exponential disappear. For example, we can write:

$a^{-1} = \frac{1}{a}$

The explanation is this:

Since $a^{0}=1, \frac{1}{a}=\frac{a^{0} }{a^{1} } = a^{0-1} =a^{-1}$

According to this definition, we can simplify our problem in the following way:

$(4x)^{-1} = \frac{1}{(4x)^{1} } = \frac{1}{4x}$

5 0

3 years ago