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Novosadov [1.4K]
3 years ago
10

The graph below shows a system of equations:

Mathematics
2 answers:
quester [9]3 years ago
8 0
The solution of a y=mx+b system of equations is always where the lines intersect, in this instance it is at x=1  y=-3. so your answer is 1. additionally if your lines never intersect i.e. are parallel then there is no solution. similarly if the equations yield the same line then they have an infinite number of real number solutions in which case for your answer you would put this symbol ---> <span>ℝ</span>
Debora [2.8K]3 years ago
7 0

Answer:

1.

Step-by-step explanation:

the intersection is at (1, -3) with x being 1 so the answer is 1.

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The altitude a ( in feet) of a plane t minutes after lift off is given by a=3400t+600
Julli [10]

Answer:

  6 minutes

Step-by-step explanation:

'a' in the formula represents altitude in feet. You are told the altitude is 21000 feet, so put that into the formula:

   21000 = 3400t +600

You can solve this for t:

  20400 = 3400t . . . . . subtract 600 from both sides

  6 = t . . . . . . . . . . . . . . . divide both sides by 3400

The problem statement tells you that t represents minutes after lift off, so this solution means the altitude is 21000 feet 6 minutes after lift off.

The question is asking for the number of minutes after lift off that the plane reaches an altitude of 21000 feet, so this answers the question directly:

  The plane is at an altitude of 21000 feet 6 minutes after lift off.

4 0
3 years ago
Ramone plans to give a bag of candy to each of the 27 students in his class. Each bag of candy will cost $2.87. Which expression
Elanso [62]
D. $ 3x30

Since $2.87 round to $3 and 27 rounds to 30 you would multiply the cost of each bag ($3) by the amount of people (30) meaning your estimate would be 30x3 which equals $90
8 0
3 years ago
Read 2 more answers
10 * 2020 * 30httkjjj​
quester [9]

Answer: 606000 pls mark as brainliest

Step-by-step explanation:

multiply 10x 2020x 30which=606000

4 0
3 years ago
1 hour is 550 miles how many miles would 1 hour and 42 minutes be
shepuryov [24]
935 miles. This is because it takes 1 minute to travel 9.16667 miles. There is 102 minutes in 1 hour and 42 minutes, so you take 9.16667 * 102, this gets you 935 miles. Hope this helps.
5 0
4 years ago
An English teacher has 6 short stories, 4 novels, and 23 poems to choose from. How many ways can he assign one of each to his cl
Karolina [17]

Answer:

552

Step-by-step explanation:

This is a problem of permutation which can be solved by rule of fundamental counting principle.

This principle states that if there "m" ways of doing one thing and "n" ways of doing other. Then no. of ways in which both the things can be done together is "m*n". This can be extended for m, n, p,r, s things and so on.

example: if there are 5 shirts and 3 trousers then number of ways in which the shirts and trousers can be worn is 5*3 = 15 ways.

_____________________________________________

The given problem is on similar concepts.

here  6 short stories, 4 novels, and 23 poems have to be assigned to his class.

Thus it can be done in 6*4*23 = 552 ways.

5 0
3 years ago
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