1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
adell [148]
2 years ago
10

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 t

he result
What is my number and how do you work it out?
Biology
1 answer:
Natasha_Volkova [10]2 years ago
7 0

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

<em>expand the equation;</em>

x² -  40x  +  400 = x²  - 20

<em>collect similar terms together;</em>

x² - x² - 40x = -20 - 400

-40x = -420

x = \frac{420}{40}\\\\ x = 10.5

Thus, the value of the unknown number is 10.5.

Learn more about word problem here: brainly.com/question/18336356

You might be interested in
When the cells of most organisms freeze, they burst. whitch property of water cause this to occur?
xz_007 [3.2K]
<span>Cells of most organisms freeze due to the fact that. Water is less dense as a solid than as a liquid. To elaborate when you quickly freeze and organism the internal portion of that organism is freezing at a much slower rate. SO the outside portion becomes rigid eventually breaking is you freeze it at a slower rate less cells will be damaged.</span>
6 0
3 years ago
If the root word "derm" means "skin," which of these words means "the study of skin diseases and treatment"?
Ray Of Light [21]
Answer: Dermatology

Like you said, derma means skin and  having the terminology -logy <span>indicates </span><span>names of scientific fields of study. Basically, dermatology is the branch of medicine that studies skin but also studies </span>scalp, hair, and nails (because they are all associated).

<span />
8 0
3 years ago
Read 2 more answers
Which pigment is the most soluble in the solvent
Alla [95]

A. yellow

The yellow xanthophylls are the next most soluble, followed by the blue-green chlorophyll A. The least soluble pigment is the yellow green chlorophyll B. You may be wondering why plants have more than one pigment.


7 0
3 years ago
Bright-field microscopes are used for most microscopic work. True or false.
ra1l [238]
This is true, hope this helps. c:
7 0
3 years ago
While studying a newly discovered prokaryotic organism, you notice that it uses binary fission to multiply. Based on your knowle
Alex17521 [72]

Answer:

Binary fission is different from mitosis and meiosis because it occur in prokaryotic cells. And prokaryotic cells does not have nucleus like the eukaryotic cells and there is not mitotic spindle formation during binary fission compared to mitosis and meiosis.

Explanation:

Binary fission is a process of cell division where a single cells divide into two or more parts and the parts regenerate into another organisms which resembles the parent organisms. This occur only in prokaryotic cells and is very different from mitosis and meiosis that occur in eukaryotic cells because prokaryotic cells lack nucleus and no spindle formation in the nucleus.

Mitosis occur in eukaryotic cells because they have nucleus and membrane bound organelles and is the process where a parent cell divide to produce two daughter cells that are genetically identical to the parent cell and each cell having the same number of chromosomes of the parent cell.

Meiosis is a type of cell division that occur in eukaryotic cells and it occur in sex cells where a single cell divide into four daughter cells with each having half number of parent cell chromosomes.

6 0
3 years ago
Other questions:
  • Do prokaryote And eukaryotes and viruses have liquid cytoplasm
    10·1 answer
  • How did the great impact of the asteroid help humans?
    9·1 answer
  • Geographers identify four major kinds of plant life in the united states and canada: tundra, grassland, desert scrub, and what.
    9·1 answer
  • Why is having a well-insulated house important
    15·2 answers
  • The graph illustrates what has happened over an 8 year period where non-native perch were introduced into Lake Malawi in Africa.
    9·2 answers
  • What is metrotrops ?​
    11·1 answer
  • Microtubules have a variety of roles, which of the options below is NOT one of them?
    14·1 answer
  • Why do birds have hallow bones?
    9·1 answer
  • ________ gives the precise time an event occurred, not just the order of events.
    11·2 answers
  • How is a renewable resource different from a nonrenewable one?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!