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alina1380 [7]
3 years ago
3

Joy is training for a triathlon. She runs a distance of 2x miles, cycles a distance of (x2 + 7) miles, and swims a distance of (

x − 2) miles. Which simplified expression is equivalent to the total distance, in miles, Joy covers? x2 + 3x + 5 x2 + 3x + 9 3x2 + 5 3x2 + 9
Mathematics
1 answer:
avanturin [10]3 years ago
3 0

Answer:

Total distance = 2x + (x^2 + 7) + (x – 2) = x^2+ (2x + x) + (7 – 2) = x^2 + 3x + 5

Step-by-step explanation:

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5 0
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Here are the boiling points elements in degrees Celsius
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Answer:

Chlorine, Krypton, Argon, Fluorine, Hydrogen

Step-by-step explanation:

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8 0
3 years ago
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Eliminate the parameter.<br><br><br>x = 5t, y = t + 8 (2 points)
maxonik [38]

Answer: y = \frac{1}{5}x + 8

Step-by-step explanation:

       This is asking us to remove the parameter. In other words, we want an equation with only the relation between x and y, so we need to remove the t. There are a few ways to do this, but I am going to set one equation equal to t and then plug it into the next one.

     Given:

x = 5t

    Divide both sides of the equation by 5:

t = \frac{1}{5}x

     -

    Given:

y = t + 8

    Plug in:

y = (\frac{1}{5}x) + 8

    Answer:

y = \frac{1}{5}x + 8

8 0
2 years ago
It cost $75 to rent a limo, plus $20 per hr. Write an equation to represent the total cost,c, of renting the limo for T hours.
qwelly [4]

We must create the equation from the information. Well, we know that there is a 75 dollar fee right off the top, and there is the word "plus" in the information meaning there will be adding.

1. Add the given cost plus the addition sign.

75 + ___ = ?

Now, we must find out what fills in "__." It says that it costs $20 per hour to rent the limo. However, it doesnt tell you how many hours it is being rented for, however it does say that the amount of hours is represented by T. So, fill in that information.

2. Fill in the second number.

75 + 20T = ?

Since there isn't a number to finish the second number to the equation, we know that there isn't going to be a completed answer. So, fill in the final cost with "c" as explained in the equation.

3. Write the answer.

75 + 20T = c

So, the equation to this problem is:

75 + 20T = c

Which is how to find out how much the limo costs to rent it.

5 0
3 years ago
78000 rounded to the nearest ten thousand
Romashka-Z-Leto [24]
70000- ten thousand
8000- thousand
000- hundred
00- tens
0- ones

so look at the 7 and if the number on the right is more than 4 you give the ten thousand a new number ; 80000
hope i helped
4 0
3 years ago
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