Answer:
This indicates that the chances of the mean life span today is greater than 70 years is 0.5871
Step-by-step explanation:
The past year showed an average life span of 71.8 years.
Population standard deviation = 8.9 years
We are supposed to find the mean life span today is greater than 70 years
i.e. P(X>70)
Formula : 
Z=−0.202
P(X<70)=0.4129
P(X>70)=1-P(X<70)=1-0.4129=0.5871
Hence This indicates that the chances of the mean life span today is greater than 70 years is 0.5871
The Y^2 because 4 to the power of 2 would give you 4x4 which gives you 16
Answer:
the option are A.
92.4%
B.
7.6%
C.
91.8%
D.
8.2%
Step-by-step explanation:
Think of it what times 61 will equal 66....
61 () = 66
(?%) = 66 /61
(?) = 1.08196
so now it gets tricky get the percentage increase correct
based on the given answer choices I'ld say it is D
% increase = (1.08196 - 1) (100) Why the subtraction of one? ?
= 8.196%
= 8.2 %
Answer: Yes, it is a solution
===================================================
Explanation:
Any ordered pair, aka point, is of the form (x,y)
x is always listed first
The point (0,-2) means x = 0 and y = -2 pair up together
Let's plug them into the equation and simplify everything
x-2y = 4
0-2(-2) = 4
0+4 = 4
4 = 4
We end up with a true statement since we get the same thing on both sides, therefore the original equation is true for (x,y) = (0,-2)
(0,-2) is a solution to the given equation
Phrased another way: the point (0,-2) is on the line x-2y = 4. This point is the y intercept.
I think it would take Company B 15hrs to clear the land, and Company A would take 18hrs.
