Answer:
3
Step-by-step explanation:
If 6 numbers have a mean value of 10, it means that the sum of the numbers divided 6 is equal to 10. This can be expressed as:
x÷6=10
x=60
The new number added will be the 7th number and now the mean is 9. You have to ask what number divided by 7 is equal to 9? This can be expressed as:
y÷7=9
y=63
63-60=3
So the new number added is 3
Answer:
![y=-6](https://tex.z-dn.net/?f=y%3D-6)
Step-by-step explanation:
we know that
A line parallel to the x-axis is a horizontal line
The equation of a horizontal line is equal to the y-coordinate of the point that passes through it
In this problem the line passes through the point (6,-6)
so
The y-coordinate is -6
therefore
The equation of the line is
![y=-6](https://tex.z-dn.net/?f=y%3D-6)
(5,3)(-3,75)
slope = (75 - 3) / (-3 - 5) = 72 / -8 = - 9....parallel line will have the same slope
y = mx + b
slope(m) = -9
(1,4)...x = 1 and y = 4
now we sub and find b, the y int
4 = -9(1) + b
4 = -9 + b
4 + 9 = b
13 = b
so ur parallel equation is : y = -9x + 13 <==
Answer:
15
Step-by-step explanation:
Since 30 and 45 are relatively small numbers, it's not a big deal to list every single one of their common factors.
Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
Factors of 45: 1, 3, 5, 9, 15, 45
Now that we have a list, it's easy to see which number is the highest common factor, which is, of course, 15.