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Posted in Mathematics

log3(2x-5)=2Answer is 41/2. Why?

I guess that your question is:

log[6*(2x-5)]=2

So, we can apply this property of log

log_b~(a)=c\Leftrightarrow a=b^c

them...

log[6*(2x-5)]=2

6*(2x-5)=10^2

12x-30=100

12x=100+30

12x=130

x=\frac{130}{12}

simplifying

\boxed{\boxed{x=\frac{65}{6}}}

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Posted in Biology

Vesicles that contain a cells digestive enzymes are called ?

It is lysosome.
.......................................

Posted in Chemistry

What three parts make up a single nucleotide

Hello!

A single nucleotide is composed of phosphoric acid, deoxyribose and a nitrogenous base (adenine, guanine, thymine or cytosine).

Posted in Mathematics

Find The Slope && Y-Intercept Of The Graph ...Y = 6x + 11

The slope is the term that follows the x, so...

\boxed{\boxed{slope=6}}

now, the interception of Y happens when the X is equal 0, then...

y=6x+11

y=6*0+11

\boxed{\boxed{y=11}}

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Posted in Mathematics

What is the volume of a sphere when r = 9 ft

Volume of a sphere is calculated using a formula:
 \frac{4}{3}  \pi * r^{3}

so in this case:

 \frac{4}{3} \pi * 9^{3}

and taht is:

 \frac{4}{3}  \pi *729
= 972 \pi

Hope it helps you! :)

Posted in English

What is a quote from the odyssey that shows odysseus' religion

"I am Odysseus son of Laertes, known before all men for the study of crafty designs, and my fame goes up to the heavens."

If he says his fame goes up to heavens this means he acknowledges the gods (Greek Mythology):)

Posted in Mathematics

(9x+2)(4x^2+35x-9)=0

(9x+2)*(4x^2+35x-9)=0

we can make this...

9x+2=0

and

4x^2+35x-9=0

then...

9x+2=0

\boxed{x=-\frac{2}{9}}


4x^2+35x-9=0

x=\frac{-b\pm\sqrt{b^2-4*a*c}}{2*a}

x=\frac{-35\pm\sqrt{35^2-4*4*(-9)}}{2*4}

x=\frac{-35\pm\sqrt{1369}}{8}

x=\frac{-35\pm37}{8}

x_1=\frac{-35+37}{8}=\frac{1}{4}

x_2=\frac{-35-37}{8}=-9

\boxed{\boxed{S=\{\frac{1}{4},-\frac{2}{9},-9\}}}

I'm sure about my answer, don't matter the order...

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Posted in Biology

What are two possible uses of genetic engineering

1. eliminating some diseases
2. improving certain species (like growing bigger apples)

Posted in Physics

At sea level, water boils at 100 degrees celcius and methane boiled at -161 degrees celcius. Which of these substances has a stronger force of attraction between its particles? Explain your answer

Water has stronger force of attraction between its particles because methane is gas and its particles are further from itself.

I hope I helped

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Posted in Physics

Physical properties of minerals graphic organizer

The answer is in the attachment
...........................................

Posted in Social studies

In the peaceful period of the Middle Kingdom, what area of culture thrived?

During the Egyptian Middle Kingdom (2055 BC - 1650 BC) Art, including architecture and literature thrived. An example is the innovation of sculpture: the block statue (a form of sculpture).

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Posted in Geography

How does weathering affect Plateaus?

Basically physical and chemical  weathering (do not confuse with erosion, which involves movement) contribute to the destruction of mineral forms. In this case it breaks down the rocks, minerals and soils, creating slopes and hills. It may be caused by (any form of) water, wind, gravity, waves or sunlight.

Posted in History

How did world war 1 affect the racial and ethnic makeup of american cities

Because or world war one, European immigration was interrupted and african americans moved north to factory towns bringing racism to america.

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Posted in Mathematics

Can someone show me the steps?10m - 2/5 = 9 3/5

10m + -0.4 = 9.6
-0.4 + 10m = 9.6
-0.4 + 10m = 9.6
Solving for 'm'Move all terms containing m to the left, all other terms to the right.
-0.4 + 0.4 + 10m = 9.6 + 0.4
Combine like terms: -0.4 + 0.4 = 0.00.0 + 10m = 9.6 + 0.410m = 9.6 + 0.4
Combine like terms: 9.6 + 0.4 = 1010m = 10
Divide each side by '10'.m = 1

Posted in Mathematics

Find the GCF of each expression. Then factor the expression. 25b^2 - 20b

Hello!

The prime factors of these two numbres are :

25b^2 = 5^2\times b^2\\
20b = 5\times 2^2 \times b

The GCF can be calculated by multiplying common primes factors :
5\times b = 5b

So the GCF is 5b and the expression can be factored this way :
25b^2 - 20b = 5b\times 5b - 4\times 5b = 5b\left(5b-4\right)

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Posted in Chemistry

What is the Bond Type and Molecular polarity of PCl3?

It is covalent bonding. The electrons are shared between the phosphorus and the chlorines.

covalent bonding is when electrons are shared between two elements.

molecular polarity is a little bit complicated, but I will try to explain ;)
PCl3 is an alternation on tetrahedral molecules.
It means that P has one lone pair of electrons. This pair of electrons are only attracted to the P nuclei and thus a greater freedom of motion.
This means that their orbital is bigger and this pushes the 3 Cl atoms closer together.
The angle between each Cl now is 107 and the angle between Cls and P is greater than 107.
Now, due to this shape, and also electronegativity (Cl is more electronegative than P meaning that it tends to hog the electrons they share closer to itself), PCl3 is polar. Electrons that are shared tend to flow closer towards the Cl than the P side.
Therefore, on the Cl side of the molecule it's, more negative. On the P side, it's more positive.