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Sindrei [870]
3 years ago
5

Which set of ordered pairs does not represent a function? A. (7, 8), (-4, 4), (3, 8), (-7, -1) B.(-5, -3), (-1, -8), (-7, 0), (-

5, -9 C.(8, 4), (6, -1), (-4, 5), (9, 4) D.(8, -3), (4, 0), (-4, 9), (3, 2)
Mathematics
1 answer:
Mariana [72]3 years ago
5 0

Answer:

Step-by-step explanation: 5

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The sum of the digits of a two-digit number is 12. The number formed by interchanging the digits is 54 more than the original nu
-BARSIC- [3]
Let X and Y be the digits.
If a two-digit number is written XY, then its value is 10x+y.
When the digits of the number are interchanged, it's YX, and its value is 10y+x.

The sum of the digits is 12.
The number formed by interchaning the digits is 54 more than the original number.

x+y=12 \\
10x+y+54=10y+x \\ \\
x+y=12 \\
10x-x+y-10y=-54 \\ \\
x+y=12 \\
9x-9y=-54 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\div 9 \\ \\
x+y=12 \\
\underline{x-y=-6} \\
x+x=12-6 \\
2x=6 \\
x=\frac{6}{2} \\
x=3 \\ \\
x+y=12 \\
3+y=12 \\
y=12-3 \\
y=9

The digits X and Y are 3 and 9, so the original number is 39.
8 0
3 years ago
What is the interquartile range if the data set? 5,911,13,16,16,19,21
max2010maxim [7]

Answer:

Step-by-step explanation:

5,9,11,(13,16),16,19,21

the mean(middle number) = (13 + 16) / 2 = 29/2 = 14.5

Q1 = (9 + 11) / 2 = 20/2 = 10

Q3 = (16 + 19) / 2 = 35/2 = 17.5

interquartile range (IQR) = Q3 - Q1 = 17.5 - 10 = 7.5 <==

7 0
2 years ago
With this diagram, what could be the values of c and d?
Sedaia [141]

Answer:

idk maybe

Step-by-step explanation:

7 0
2 years ago
Can someone please help me
dem82 [27]

Answer Is a

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3 0
3 years ago
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you deposit $700 in an account with an annual interest rate of 4%. calculate the amount of money you will have in that account a
vlabodo [156]

Answer:1872

Step-by-step explanation:

7 0
3 years ago
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