Answer:
20
Step-by-step explanation:
n-50=30
n=-30+50
n+20
Answer:
Data set A
Step-by-step explanation:
Data set A is the one that is more spread out.
The mean is the same as the average of a given sample. It is usually a measure of the central tendency of a data set.
Standard deviation is a measure of the spread of a given set of data.
- The lower the value of the standard deviation, the more clustered around the mean a data is.
- Data is spread out if it has a higher value of standard deviation.
Since data set A has a standard deviation of 35, it the most spread out.
The angle to the left of angle 1 is 70, so angle 1 is equal to 180 - 70 - 70 which is 40,
Answer:
a(4) = -17
Step-by-step explanation:
hello :
use : a(n) =a(n-1) -5
a(n) -a(n-1) = -5 (common differnce for arithmetic sequence)
the ni-eme term is : a(n) = a(1) +(n-1)d d = -5 and a(1) = -2
so : a(n) = -2 +(n-1)(-5)
a(n) = -5n+3
when : n= 4 a(4) = -5(4)+3 =-17
8. ab = cd
.. 3x+4 = 4x-1
.. 5 = x
.. ab = 3*5 +4
.. ab = 19
11. Adjacent vertex angles are supplementary and opposite angles are equal. If the angles are vertex angles numbered in order around the figure,
.. ∠2 = 12°
.. ∠3 = 168°
13. If the quadrilateral is a parallelogram so that point E is the midpoint of both diagonals, it will be a rectangle when the diagonals are equal length.
.. ae = be
.. x +22 = 3x -18
.. 40 = 2x
.. x = 20 . . . . . will make segments AE and BE the same length
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In general, diagrams are helpful for geometry problems.