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Vika [28.1K]
2 years ago
14

9-4 skills practice solving quadratic equations by completing the square

SAT
1 answer:
Len [333]2 years ago
5 0

Answer:

By doing it only once

Explanation:

To find the roots of the equation we can simply use the quadratic formula but in certain cases like finding domain/range of a function in the form  ax2+bx+c  , converting it to  a(x+d)2+e  makes it simpler to solve as x appears only once.

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What does the underlined word mean in the following sentence? El arqueólogo está mirando esos dinosaurios. architect archaelogis
lbvjy [14]

The Spanish word "<u>arqueólogo</u>" best translates to archaelogist.

The world arqueólogo is a Spanish word which refers to the study of human activity through the analysis of material culture.

  • The underlined word in the sentence is "El <u>arqueólogo</u> está mirando esos dinosaurios"

  • The Spanish word arqueólogo is best translated to the word "<u>archaelogist</u>" in English  

In conclusion, the word that best mean the underlined Spanish word in English is "archaelogist"

Read more about this here

<em>brainly.com/question/10275894</em>

5 0
3 years ago
How many molecules of h2o are there in 0. 75 mol of h2o.
Elza [17]
The answer to that question is 4.52*10 23 power molecules
5 0
3 years ago
evaluate each of the statements below. select those that accurately describe the role of genes and chromosomes in the process of
Bas_tet [7]
Chromosome are made of DNA.
alleles are the different forms of a gene that can exist.
chromosomes contain genes that control the inheritance of traits.
3 0
2 years ago
If there are 12 x 1023 oxygens in a sample of water, how many grams of hydrogen are in the sample?.
AveGali [126]

The amount of grams of hydrogen that are in the water sample is;

3.985 g

<h3>Avogadro's number</h3>

We are given that;

Number of moles of oxygen in a sample of water = 12 × 10²³

  • Now, the chemical formula of a molecule of water is H₂O. This means that for every 1 atom or molecule of oxygen, there must be 2 hydrogen atoms or molecules present.

Since Number of moles of oxygen in the sample is 12 × 10²³, then number of moles of hydrogen will be twice that = 2 × 12 × 10²³ = 24 × 10²³ moles

Now, molar mass of hydrogen is 1 g/mol and we know that;

Molar mass = Avogadro's number(6.023 × 10²³) moles

Thus;

6.023 × 10²³ moles = 1 g/mol

Thus; 24 × 10²³ moles of hydrogen = ( 24 × 10²³ × 1)/(6.023 × 10²³)

⇒ 3.985 g

Read more on Avogadro's number at; brainly.com/question/914267

3 0
2 years ago
In July 2019, there were 1.5 million people who were marginally attached to the labor force, essentially unchanged from a year e
topjm [15]

These people are referred to as the  <u>discouraged workers.</u>A person who is eligible for employment and can work but is unemployed currently and has not attempted to find employment in the last four weeks

Explanation:

Discouraged workers are the individuals who is eligible for employment and can work but is unemployed currently and had not made any attempt to find employment in the last four weeks.

For example: Young graduates,senior citizens.

Discouraged workers are not considered as a part of the labour force and are  not counted in most official unemployment rates.

<u>These are people who were not in the labor force, although they wanted work and were available for it and had looked for jobs at some point in the previous 12 months. They were not counted as unemployed because they had not actively searched for work in the 4 weeks preceding the survey.</u>

If unemployed workers become discouraged, the measured unemployment rate will fall

4 0
4 years ago
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