if I subtract 20 from my number, then square the result, I get the same answer as if I square my number, then subtract 20 from the result
What is my number and how do you work it out?

Answers

Answer 1

The value of the unknown number is 10.5.

Let the unknown number = x

When 20 is subtracted from the number and the result is squared which is equal to the square of the unknown number minus 20:

(x - 20)² = x² - 20

expand the equation;

x² -  40x  +  400 = x²  - 20

collect similar terms together;

x² - x² - 40x = -20 - 400

-40x = -420

[tex]x = \frac{420}{40}\\\\ x = 10.5[/tex]

Thus, the value of the unknown number is 10.5.

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Answer 2

Answer:

(x - 20)² = x² - 20

expand the equation;

x² -  40x  +  400 = x²  - 20

collect similar terms together;

x² - x² - 40x = -20 - 400

-40x = -420


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atp comes from which biochemical system in the muscle?

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Answer:

Phosphagen system. Glycogen-lactic acid system. Aerobic respiration.

Explanation:

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Answer:

Mitochondria are responsible for respiration

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I believe it's mitochondria

how are plant and animal cells similar in structure

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Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.

which organ system removes carbon dioxide from the bloodstream?

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Your respiratory system is the network of organs and tissues that help you breathe. This system helps your body absorb oxygen from the air so your organs can work. It also cleans waste gases, such as carbon dioxide, from your blood.

What happens during photosynthesis?
a. Autotrophs consume sugars
b. Autotrophs produce sugars
c. Heterotrophs produce ATP.
d. Heterotrophs consume ATP.

Answers

Answer:

Answer is option a. Autotrophs consume sugars

Explanation:

If you like my answer than please mark me brainliest thanks

The answer is: B - Autotrophs produce sugars.

If you placed the celery into a bottle of colored water that was 35% sugar, would the colored water be seen in the celery? Why or why not?

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Answer:

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La declaración 'en la naturaleza existen más de 4000 minerales diferentes conocidos' es VERDADERA. Estos elementos pueden ser diferenciados por sus propiedades.

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El estudio de la propiedades físicas y químicas permiten diferenciar los diferetes tipos de minerales que se encuentran en la naturaleza.

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The energy from light dependent reactions.

Oil refining is an example of:

Construction Production
Extractive Production
Domestic Production
Traditional Production

Answers

Answer:

i think its the first one

Explanation:

The answer would be extractive production.

5. In a tundra ecosystem, the carrying capacity for arctic hares is about 400 individuals. Which of these events is MOST likely to reduce the carrying capacity for arctic hares in the ecosystem by at least 25 percent?

(A) a severe storm that kills about 100 adult and young arctic hares

(B) a 25 percent decrease in the populations of foxes, wolves, or other predators of arctic hares

(C) the arrival in the ecosystem of a species that competes with the arctic hare for its food

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(E) a mutation that introduces a new fur color to the arctic hare population

Answers

A temporary increase in the arctic hare population to more than 425

individuals.

Hares are among the primary consumers as they are herbivores while foxes

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hares for food which will drastically reduce their population

Increasing their population by 425 individuals with the hares having a

population of 400 will surely decrease their carrying capacity in the tundra

ecosystem.

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I am just a teen who needs some help with homework. :)
This is my question:
What is the rarest eye colour in the world? Please help, it's due today.

Answers

Answer:

Green eyes

Explanation:

The production of melanin in the iris is what influences eye color. More melanin produces a darker coloring, while less makes for lighter eyes. Green eyes are the rarest, but there exist anecdotal reports that gray eyes are even rarer.

The rarest eye color in the world is green, only 2% of the population in the world have green eyes. To find out more about the list.....

1. Green eyes

Only 2% of people in the world are believed to have this eye color. It is most easily found in northern and Southern Europe and Western Asia.

2. Amber eyes

They are reddish-brown, with a golden and coppery undertone. Among the clear and beautiful eyes in the world, and according to the survey, the most iris, all eyes and beautiful in the world are according to the study, all eyes are rare and specific.

3. Red or violet eye

It is generated by the body thanks to some genetic changes. The most common is albinism, a disease that lowers melanin levels. Because of this, the hair and eyes can be distinguished.

With this information, we can conclude that there are several eye colors, but the most rare is the color green.

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Answers

During sensation, the first step for some sensory systems is the accessory structures, which are saddled with the responsibility of modifying an incoming stimuli.

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Explanation:

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Answer:

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Answer:

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Answers

C is the right answer

Answer:

C

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espero ter ajudado boa noite

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Answer:

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The fact that the seeds can be one of two different colors shows that the chromosomes with the seed color gene must sort independently.
The fact that the seeds can be one of two different colors shows that the chromosomes with the seed color gene must sort independently.

The fact that the seeds can be one of two different textures shows that the chromosomes with the seed texture gene must sort independently.
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The idea that alleles sort independently is supported by the fact that some second generation offspring have the same trait combinations that the first generation parents have.




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Answer:

The idea that alleles sort independently is supported by the fact that some second generation offspring have trait combinations that the first generation parents do not have.

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PLS HELP ILL GIVE BRAILYEST AND 100PTSPLS HELP ME
Select the correct location on the image.
Where is the protective covering of the axon?

Answers

Myelin the orange extended region

Answer: myelin sheath

Explanation:

The axon is covered by a myelin sheath. The axon passes information to the next neuron or other cell in the body. A myelin sheath.

24. What energy transformation occurs
during the combustion of coal in a
power plant?
A Electromagnetic energy is
transformed to thermal energy.
B Nuclear energy is transformed to
electromagnetic energy.
C Chemical energy is transformed to
thermal energy
D Chemical energy is transformed to
noclear energy

Answers

Answer:

c

Explanation:

it's not really a chemical per se but c is close enuff

Help please help, anybody please

Answers

You need to show a picture I can’t help you if you don’t show it

What factors could decrease the rate of photosynthesis in a plant?

Answers

Answer:  light intensity, carbon dioxide concentration and temperature i think- maybe

Explanation:

Without enough light, a plant cannot photosynthesise very quickly, even if there is plenty of water and carbon dioxide, Increasing the light intensity will boost the rate of photosynthesis and for carbon dioxide even if there is plenty of light, the plant cant photosynthesise if there is insufficient carbon dioxide. and why temperature is because if it gets too cold the rate of photosynthesis will decrease, Plants cant photosynthesise if it gets too hot either

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