Answer:
1/3
Step-by-step explanation:
1/2 of 2/3 = 1/3
If u just give me my fricking points its 91
Answer:
Step-by-step explanation:
Look at the component form of each vector.
Note that vector c is <4,4> and vector d is <-2,-2>
If one imagined the line that contained each vector, the line for both would have a slope of 1, because 
Since they have the same slope they are parallel, but since they are in opposite directions, we often call them "anti-parallel" (simply meaning parallel, but in opposite directions).
If two vectors are parallel, one vector can be multiplied by a scalar to result in the other vector. This means that there is some number "k", such that 
, or equivalently, 
and 
.
If and , we just need to substitute known values and solve for k:
Double checking that k works for the y-coordinates as well:
? 
So, 
Answer:
121.9
Step-by-step explanation:
I will use pi but not in the answer
use formula V=πr²h
(π)(3.5²)(5.5)
12.25 × 5.5=67.375 × π=211.6648...
1/2(4/3(π(3.5³))
4/3(42.875)=57.166...× π = 179.59438...
1/2(179.59438...) = 89.79719...
211.6648... - 89.79719... = 121.86761... ≈ 121.9
Answer:
The margin of error for this confidence interval is of 7.
Step-by-step explanation:
Confidence interval concepts:
A confidence interval has two bounds, a lower bound and an upper bound.
A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.
The margin of error is the subtraction between these bounds, divided by 2.
In this question:
The bounds are 32 and 46.
(46 - 32)/2 = 14/2 = 7
The margin of error for this confidence interval is of 7.
