Answer:
Question: what is the sum of the first 100 whole numbers?? how am i supposed to work this out efficiently? thanks
The question you asked relates back to a famous mathematician, Gauss. In elementary school in the late 1700’s, Gauss was asked to find the sum of the numbers from 1 to 100. The question was assigned as “busy work” by the teacher, but Gauss found the answer rather quickly by discovering a pattern. His observation was as follows:
1 + 2 + 3 + 4 + … + 98 + 99 + 100
Gauss noticed that if he was to split the numbers into two groups (1 to 50 and 51 to 100), he could add them together vertically to get a sum of 101.
1 + 2 + 3 + 4 + 5 + … + 48 + 49 + 50
100 + 99 + 98 + 97 + 96 + … + 53 + 52 + 51
1 + 100 = 101
2 + 99 = 101
3 + 98 = 101
.
.
.
48 + 53 = 101
49 + 52 = 101
50 + 51 = 101
Gauss realized then that his final total would be 50(101) = 5050.
The sequence of numbers (1, 2, 3, … , 100) is arithmetic and when we are looking for the sum of a sequence, we call it a series. Thanks to Gauss, there is a special formula we can use to find the sum of a series:
S is the sum of the series and n is the number of terms in the series, in this case, 100.
Hope this helps!
Vascular Tissue is mostly likely to be found in the___of a plant’s shoot
- Center
- Between the center and outside
- None of these
- Outside
plants are able to bend their stem so they are closer to a light source________
what adaption do they use?
structural
physiological
behavioral
Answer:
I think its physiological (B)
Explanation:
In phototropism a plant bends or grows directionally in response to light. Shoots usually move towards the light; roots usually move away from it.
Plants have a variety of developmental, physiological, and growth responses to light—sometimes only to particular wavelengths of light.
(Credits to Khan academy) Hope im right and hope it helps.
How are mitosis and meiosis similar?
A.
both require DNA replication
B.
both have two cell divisions
C.
both produce gametes
D.
both involve crossing over
Helppp I need to put this question in my own words!!!
Answer:
A planet revolves around the sun while the moon orbits a planet
7. Show that it we cross pure grech pea plants with the heterozygous yellow pea plants
what are the possible phenistkes of the first filial generation by using rennut square
I use crosses the first filial generation on the question number seven (7) what are the
possible ration of their offspring's
9. What are the most commah known neuroplerans nictter are
Explanation:
7. 100% green pea plant
-50%=GG
-50%=Gg
9. Not sure what you mean?
Answer:
Yellow( heterozygous) and green
Explanation:
Q4: Describe how crossing over can lead to new variations in genes.
Answer:
Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.
Explanation:
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A marathon runner is running a race. During the race the marathon runners heart rate and breathing increases. Which of the following explains why the marathon runners' body is responding in this way?
Answer:
Warmer temperatures increase your heart rate. In addition to pumping more blood to the muscles, your heart also transports more blood to the skin in order to cool it. Increased demand causes your heart to beat faster -- anywhere from 20 to 40 beats per minute higher than normal.
Explanation:
Hope this helped. =)
Answer for 10 points please
The _________________________ are responsible for packaging and distributing the materials in a cell. * Fill in the blank(s) with the correct answer.
What characteristic could provide a species with a better chance of surviving a drastic environmental change?
(A) A small population size
(B) A highly diversified gene pool
(C) specialized cells within the body
(D) Many individuals with the recessive trait
A highly diversified gene pool could provide a species with a better chance of surviving a drastic environmental change. So, the correct option is B.
What is Diversified Gene pool?Greater genetic diversity within a population is made possible by a diverse gene pool, which raises the possibility that at least some members of the population will exhibit features that are more adapted to the new environment.
This variety can develop as a result of gene flow from other populations or mutations. The number of people having the recessive trait or a limited population size, however, would not always give an advantage in enduring environmental change. A species may have a better chance of surviving a severe environmental shift if its gene pool is extremely varied.
Therefore, the correct option is B.
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For Ascomycota, what structure's function is most similar to the function of a mushroom?
a
Ascus.
b
Ascocarp.
c
Antheridium.
d
Archegonium.
e
Ascospore.
Answer:
e. Ascospore
hope this helps
what best describes a steppe
Answer:
a wide expanse of desert. a grassland with few trees.
Explanation:
please I need help on it
Answer:
c) Symbiosis.........
What does a DNA repair mutation cause in the Cell cycle?
Answer:
Mutation rates increase substantially in cells defective in DNA mismatch repair or in homologous recombinational repair (HRR). Chromosomal rearrangements and aneuploidy also increase in HRR defective cells. Higher levels of DNA damage not only cause increased mutation, but also cause increased epimutation.
To measure gas in a car by unit what would you measure by? Cup?Pint?Quart?or gallon.
Answer:
Gallon
Explanation:
help pleaseee
give an example of lamarcks theory of evolution:
Which are examples of pathogens? (Choose all that apply)
Parasite
Virus
Plants
Water
Fungi
Bacteria
Poop
Answer:
virus
bacteria
fungi
poop
Explanation:
I’ll mark u as brainliest!
The cell looks identical on both sides of the second picture. This shows that the cell is getting ready to split into two separate cells.
how do Solids, liquids and gasses change states?
you melt a solid to turn into a liquid, then you boil the liquid to turn it into gas
Which tree above shows a different evolutionary history from the others? Explain your answer.[ ]
Answer:
the second one is the right answer
The second evolutionary tree (2) is showing a different evolutionary history from the other trees.
What is an evolutionary tree?An evolutionary tree is a diagram/graphic used in biology to show evolutionary relationships between taxa.
The taxa located at the tree can be different species, genera, orders, etc.An evolutionary tree is monophyletic when all descendants originated from the same ancestor.In conclusion, the second evolutionary tree is showing a different evolutionary history from the other trees.
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Explain the importance of organic compounds to the cell.
Answer:
Organic compounds essential to human functioning include carbohydrates, lipids, proteins, and nucleotides. ... Monomers are single units of organic compounds. They bond by dehydration synthesis to form polymers, which can in turn be broken by hydrolysis. Carbohydrate compounds provide essential body fuel.
pls help on the question below
which one is the lowest ,middle and highest between these magnification
10X
30X
40X
Answer:
10X is lowest
30X is middle
40X is highest
who is in charge in canada
Answer:
Justin Trudeau
Explanation:
Deputy Prime Minister of Canada
Avanti works in a bookstore. She has four books and is going to place them in two stacks. The diagram above shows the books before they touch. Use the information in the diagram to answer the question. How did the temperatures of the four books compare before they touched? How will the temperatures of the two top books compare after the books have been touching for a while, and why? HELP
Answer:
Well they didn't transfer any energy when they weren’t touching and it didn't produce any energy if it didn’t move. Since they are on top of each other they are causing momentum on each other creating kinetic energy
Explanation:
help guysssss with my 73 points as plssssss
Answer:
I'm pretty sure it's oil gland hope this helps
What process leads to the specialization of the embryonic stem cells into different types of cells?
O differentiation
division
O replication
O respiration
Why is it important to center the object you want to look at in your field of view before changing to a higher magnification objective lens? A. So the object is still in your field of view at the higher magnification. B. So you can always see the entire object at the higher magnification. C. So you do not damage the higher magnification objective lens.
Answer:
B. So you can always see the entire object at the higher magnification
Explanation:
A microscope is used to view objects smaller than the naked or unaided eyes can see. The objective lens, in conjunction with the occular or eye lens, is used to achieve this purpose. The objective lens are of different magnifications as follows: 10X, 40X, 100X etc.
However, as the magnification increases i.e. higher objective, the object in the field of view becomes smaller and less focused. Hence, the object in the field of view must first be centered at a lower magnification/objective lens before changing to a higher one in order for the entire object to be seen at a higher magnification.
Labrador retrievers are traditionally black, brown, or yellow. The B allele codes for black fur, and the b allele codes for brown fur. The E allele allows the pigment to be deposited in the fur, while the e allele doesn't allow the pigment to be deposited. If one lab has the genotype bbee, and another lab has the genotype BbEe, what is the chance that an offspring will be brown
Answer:
25% of offspring will be brown
Explanation:
4 out of 16 of will be brown
to convert this to a percentage do:
4 ÷ 16 × 100 = 25
Punnett squares are in the image
Brown offspring are circled
Oxygen-rich blood is carried through pulmonary arteries from the lungs to the heart?
It is false that oxygen-rich blood is carried through pulmonary arteries from the lungs to the heart.
What is pulmonary artery?The two principal arteries leaving the right ventricle of the heart are known as the pulmonary arteries. Low-oxygen blood is seen in this lower chamber of the heart. This blood travels to the lungs through the pulmonary arteries.
The middle mediastinum contains the main pulmonary artery, as well as the pulmonary arteries that follow on the right and left. They emerge from the four chambered heart's right ventricle and carry blood to the lungs.
Right side of heart sends deoxygenated blood to pulmonary artery. Nature has made it such that this blood reaches the lungs where carbon dioxide can be released and then oxygen can be loaded.
It is true that all arteries convey oxygenated blood, with the exception of the pulmonary artery.
Thus, the given statement is false.
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