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Bezzdna [24]
3 years ago
6

How are real numbers used to describe real world situations

Mathematics
1 answer:
kenny6666 [7]3 years ago
4 0
Real number are used to explain real situations by allowing you to understand that they will always have an outcome that is disable by another real number
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In one semester, doug and Laura spent a combined 250 hours in the tutoring lab. If doug spent 40 more hours in the lab then Laur
aksik [14]

Answer:

Step-by-step explanation:

What we have is a general equation that says this in words:

Laura's hours + Doug's hours = 250 total hours

Since we don't know either person's number of hours, AND since we can only have 1 unknown in a single equation, we need to write Laura's hours in terms of Doug's, or Doug's hours in terms of Laura's.  We are told that Doug spent Laura's hours plus another 40 in the lab, so let's call Laura's hours "x".  That makes Doug's hours "x + 40".  Now we can write our general equation in terms of x:

x + x + 40 = 250 and

2x = 210 so

x = 105

Since Laura is x, she worked 105 hours in the lab and Doug worked 40 hours beyond what Laura worked.  Doug worked 145.  As long as those 2 numbers add up to 250, we did the job correctly.  105 + 145 = 250? I believe it does!!

8 0
3 years ago
I need help please! i don’t understand this problem and it’s very confusing. hellllppp!!!
Elodia [21]
Check the picture below.

make sure your calculator is in Degree mode.

6 0
3 years ago
Which ordered pair could replace the missing value and create a
Usimov [2.4K]

Answer:

C

Step-by-step explanation:

The same x value cannot be used more than once or it isn't a function.

8 0
3 years ago
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What is the LCD for ?11/20 31/45<br><br> 315<br><br><br> 105<br><br><br> 66<br><br><br> 945
Mnenie [13.5K]
None of these are choices, because in order to make 20ths equal a 45th, it was to end in a 20,40,60,80, or ending in 00. 
8 0
3 years ago
Solve pls brainliest
Goshia [24]

Hey there!

39 = - u / 6

MULTIPLY 6 to BOTH SIDES

39(9) = (-u / 6)(6)

CANCEL out: the RIGHT side

KEEP: the LEFT side because it helps solve for the u-value

NEW EQUATION: -u = 234

DIVIDE -1 to BOTH SIDES

-1u / -1 = 234 / -1

CANCEL out: -1 / -1 because it gives you 1

KEEP: 234 / -1 because it gives you the result of the u-value

NEW EQUATION: u = 234 / -1

SIMPLIFY IT!

u = -234

Therefore, your answer is: [u = -234]

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

8 0
3 years ago
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