Answer:
The first number is 20, the second one is 11
Step-by-step explanation:
Let the first number be x and the second number be y
Since it says "9 is the difference between two numbers", the first equation will be x-y=9
It also says that "their sum is 31". That means the second equation will be x+y=31
here are the two equations:
x-y=9
x+y=31
You can solve this any way you like, but I'll show elimination
add the two equations
x-y=9
x+y=31
2x=40
divide by 2
x=20
Substitute 20 as x in one of the equations
20+y=31
subtract 20 from both sides
y=11
That means the two numbers are 20 and 11
Hope this helps!
In the data set below what is the lower quartile 16,26, 48,56,61,85,88,88,88,91,91
OlgaM077 [116]
Answer:
48
Step-by-step explanation:
First find the median:
16,26,48,56,61,85,88,88,88,91,91
85 is the median.
Now, find the median of the first set of bold numbers.
<u>16</u>,<u>26</u>,48,<u>56</u>,<u>61</u>
The median of the first bold set of numbers will be lower quartile.
The lower quartile is 48.
f(-2) is the x value, fond the Y value of the graphed line when the line is at x -2.
The line is at Y = 2
The answer is B.
Answer:
8x + 4
Step-by-step explanation:
Subtract the numbers: 2x + 5 + 6x - 1 2x + 4 + 6x
Then, you combine them like terms: 2x + 4 + 6x = 8x + 4
