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anastassius [24]
3 years ago
5

When must a system of linear equations be solved algebraically.

SAT
1 answer:
Pie3 years ago
8 0

Answer: The solution to a system of linear equations is the point at which the lines representing the linear equations intersect. Two lines in the x y xy xy -plane can intersect once, never intersect, or completely overlap.

Explanation:

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A student on the track team runs 45 minutes each day as a part of her training. she begins her workout by running at a constant
Paladinen [302]

The equation for the distance is:

(a/60) × 8 mi/min + (b/60) × 7.5 mi/min = D

We know that she runs 45 minutes each day, such that she runs at a rate of 8 miles per hour for a minutes, and then runs at 7.5 miles per hour for b minutes.

Now, remember the relation:

speed × time = distance.

Because a and b are in minutes, we need to rewrite the speed in minutes, remember that there are 60 minutes in one hour, then:

8 mi/h = (1/60) × 8mi/min

7.5 mi/h = (1/60) × 7.5 mi/min

Then the equation for the distance is:

a × (1/60) × 8 mi/min + b × (1/60) × 7.5 mi/min = D

(a/60) × 8 mi/min + (b/60) × 7.5 mi/min = D

Learn more information about speed here

brainly.com/question/4931057

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3 0
2 years ago
Raj can exchange 15 Euros for 11 British Pounds. At
Zepler [3.9K]
B)73 as it is the same rate as from 15 euros to 11 pounds - hope this helps :)
8 0
3 years ago
Select the correct answer from each drop-down menu. Scientists that reducing the consumption of substances that emit harmful gas
Feliz [49]

1. Scientists <u>conjectured</u> that reducing the consumption of substances that emit harmful gases would reduce pollution.

2. Jonathan was irritated by the <u>incessant</u> noise made by the loud musical procession on the street.

3. The poor farmer was in for a pleasant surprise when he <u>fortuitously</u> stumbled upon a pot of gold buried in his yard.

In this exercise, you're required to fill in the gap (blank) in the given sentences with the most appropriate word as follows:

1. Scientists <u>conjectured</u> that reducing the consumption of substances that emit harmful gases would reduce pollution.

  • A conjecture is a noun and it can be defined as an opinion or conclusion that is formed without sufficient evidence, fact or proof. Thus, a conjecture is formed on on the basis of an inconclusive or incomplete information.

2. Jonathan was irritated by the <u>incessant</u> noise made by the loud musical procession on the street.

  • Incessant is an adjective and it can be defined as an unpleasant thing that happens continuously without interruption. Thus, it is a word that is used to describe something that is ceaseless, unending or happens without stopping.

3. The poor farmer was in for a pleasant surprise when he <u>fortuitously</u> stumbled upon a pot of gold buried in his yard.

  • Fortuitously is an adverb and it is used it describe a situation or an event that happened by chance or accidentally rather than happening intentionally.

Read more on fortuitously here: brainly.com/question/2601859

3 0
2 years ago
In the Chinese version, fair dice with numbers 1, 2, 3, 4, 5, and 6 are used, along with a board with those numbers. The board h
Mnenie [13.5K]

Complete Question:

a) List the values that y may take on and construct the pdf table

b) Calculate the average expected matches over the long run of playing this game for the player

c) Calculate the average expected earnings over the long run of playing this game for the player

Answer:

a) Y = { -1, 1, 2,3}

E(X) = 0.5

c) There is a loss of $0.0802

Explanation:

a) Y will take on the values, Y = { -1, 1, 2,3}

The pdf table is attached as a file to this solution

b) E(X) = 0.5

c)

The average expected matches, E(X) = np

where p = 1/6, n =3

E(X) = 3 * 1/6

E(X) = 0.5

c) Average expected earnings = \sum y P(Y)

P(y) can be seen from the pdf table in the file attached

Average expected earning = (-1*0.579) + (1*0.347) + (2*0.069) + (3 * 0.0046)

Average expected earning = -0.0802

This shows that instead of earning, there is a loss of $0.0802

7 0
3 years ago
Everything was going according to plan when essay 300 words.
lilavasa [31]

Answer:

ok???

Explanation:

6 0
2 years ago
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