Um I think it is 2,1 count over 2 then go up1
Step-by-step explanation:
Mean of the origibal set = 20
No. of terms = 10
Sum = Mean x No. of terms
= 20 x 10 = 200
The sum of additional numbers to make the new set of observstion is 4 + 8 + 12...... + 40 = 220
New Sum = 200 + 220 = 420
The no of terms stay the same
New Mean = New Sum/ N
= 420/10
= 42
AD = DB
Angle ADE = Angle CDB
Angle DAE = Angle DBC (Alternate angles)
Angle DEA = Angle DCB (Alternate angles)
Since you have two congruent angles and one congruent side, triangle ADE is congruent to triangle CDB. This means that DE is congruent to DC implying D is the midpoint of CE.
Answer:
The answer is x= -16!
Step-by-step explanation:
-4(x-7)=36
-4x- 28= 36
+28 +28
-4x= 64
/-4 /-4
x= -16
I hope this helps!
p.s. have any more questions? Post the question and comment the link below!
Ciao!
♥, Sadie
Answer:
77.2%
Step-by-step explanation:
The average formula is:
Let's first find the sum of all the numbers (remember sum means to add):
(2)(85) + (4)(78) + (3)(66) + 92 = ?
170 + 312 + 198 + 92 = 772
There are marks for 10 students so that is what goes at the bottom (10 students, 10 test scores)
Plug both things into the equation:
Therefore, the average mark on the test was 77.2%
<em>Hope this helps!!</em>
<em>- Kay :)</em>
