What number should be removed from the list {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13} so that the mean of the remaining number
Julli [10]
Answer:
3
Step-by-step explanation:
1+2+4+5+6+7+8+9+10+11+12+13 = 87
87/12 +7.25
Answer:
5.45 hours or 5 hours 27 minutes to nearest minute.
Step-by-step explanation:
We work in rates per hour.
Kevin does 1/10 of the roof in an hour and Sam does 1/12 of the roof/hour.
Now we add to get the equation:
1/10 + 1/12 = 1 / x where x is the time they take to repair the roof working together.
Multiplying through by the LCM 60x:
6x + 5x = 60
11x = 60
x =60/11
x = 5.45 hours.
Answer:
Step-by-step explanation:
a93 = 93 + 2(52 − 1)
a93 = 93 + 2(52 + 1)
a93 = 52 + 2(93 + 1)
a93 = 52 + 2(93 − 1)
Originally 52 - Get rid of the first 2
a93 = 52 + 2(93 + 1)
a93 = 52 + 2(93 − 1)
2 each week. - Annoying. That doesn't help.
a93 = 52 + 2(93 + 1)
a93 = 52 + 2(93 − 1)
We're not buying any new ones in the first week, so purchases are one down.
a93 = 52 + 2(93 − 1)
I think we made it.
Answer:
<em>y=-4x+3</em>
<em>This is the slope-intercept form where m=-4 and b=3</em>
Step-by-step explanation:
<u>Equations of the line</u>
There are several forms to express the equation of a line in the plane.
The point-slope form is:
y-k=m(x-h)
Where (h,k) are the coordinates of the point and m is the slope.
The slope-intercept form is:
y=mx+b
Here, b is the value of the y-intercept.
The given line passes through (3,-9) and has a slope of m=-4. The point-slope form is:
y-(-9)=-4(x-3)
Operating:
y+9=-4x+12
Subtracting 9:
y=-4x+3
This is the slope-intercept form where m=-4 and b=3