Answer:
Sum=24
Mean=8
Step-by-step explanation:
To find the sum of all the numbers you simply would do 8+7+9.
That is 24.
When finding mean you add up all your numbers then divide by the total number of number (I know that sounds a bit confusing. In this case there are only 3 numbers, so that is the one you will use for dividing)
Your equation would look like this
24
_
3
Once you divide you should get 8 as your mean or average in other terms.
Answer with explanation:
Equation of Linear Regression line is
y=1.14 x + 3.805
A line of regression is that line which passes through none of the points, few points or all the points in the two dimensional coordinate plane.It tells value of one variable when another variable is known.
for, x=30
y=1.14 × 30 +3.805
y=34.20 +3.805
y=38.005
y=38 (approx)
So, Ordered pair is , (30,38)
Option B
Answer:
102.6666... feet in one second 1232 feet in twelve seconds.
Step-by-step explanation:
Most clear way of solving this breakdown the proportions by keep the value.
1 mile = 5280 feet.
1 hour = 60 minutes = 3600 seconds -- See now it is easy.
Feet per second...
= feet/seconds
(70*5280) = 369,600/3,600 = 102.666666667 -- That is 102.66...feet per second.
For twelve seconds just multiply by 12.
102.666666667*12 = 1232 feet in twelve seconds.
Step-by-step explanation:
The given equations are :
y=-x+2 ....(1)
y = -4x +7 ....(2)
From equation (1) and (2)
-x+2 = -4x +7
Taking like terms together
-x+4x=7-2
3x = 5
x = 1.667
Put the value of x in equation (1)
y=-(1.667)+2
y = 0.333
The solution of the equations are (1.667,0.333). The attached figure shows the graph for the equations.
Answer:
Answer is C
Step-by-step explanation:
(x + 6)(x + 2)