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Ne4ueva [31]
3 years ago
8

A plane flying from City A to City B travels x miles per hour for a total of 4.75 hours. The plane takes the same route on the r

eturn trip, traveling 20 miles per hour faster for a total of 4.25 hours. What is the total distance that the plane travels?
Mathematics
1 answer:
Deffense [45]3 years ago
6 0

Answer:

3825 miles

Step-by-step explanation:

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Sarah has 23 apples she divides them into 15 places what is the fraction of the apples she has left?
KatRina [158]
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Round 34,330 to the nearest thousand
vovangra [49]

Answer:30,000

Step-by-step explanation:

5 or more is greater 4 or you give it a rest

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The set of 12 hearts represents 3/4. how many hearts represent 1?
Art [367]

Answer:

12 x 4/3 = 16........(total) so...

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3 years ago
How many solutions does this system of equations have?
Phoenix [80]
<h3>Answer: D) infinitely many solutions</h3>

===================================================

Explanation:

Let's solve the first equation for y

4x - 2y = 6

4x-6 = 2y

2y = 4x-6

y = (4x-6)/2

y = (4x/2) - (6/2)

y = 2x - 3

After doing so, we see that 4x-2y = 6 is equivalent to y = 2x-3

Therefore, the original system of equations is effectively listing the same equation twice (one has a different form compared to the other).

Both equations in this system produce the same graph, which leads to infinitely many solutions. All solutions are on the line y = 2x-3.

You can say that all solutions are in the form (x, 2x-3) where x is any real number you want.

-------------------------------

Here's another approach using substitution

4x - 2y = 6 ... start with the first equation

4x - 2( y ) = 6

4x - 2( 2x-3 ) = 6 .... replace y with 2x-3; ie plug in y = 2x-3

4x - 2(2x) - 2(-3) = 6

4x - 4x + 6 = 6

0x + 6 = 6

0 + 6 = 6

6 = 6

We get a true statement. The last equation is always true regardless of what we plug in for x, so this is another way to see how we get to infinitely many solutions.

Side note: the system is considered dependent since one equation depends on the other. The system is also consistent since it has at least one solution.

8 0
3 years ago
If 80% is 72 marks what is full marks <br><br> can someone tell me the answer please
tekilochka [14]

80% = 0.8

100% = 1

0.8 = 72

1 = x

0.8* x = 72 * 1

x = 72 / 0.8 = 90

0.8 * 90 = 72

80% * 90 = 72

5 0
3 years ago
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