It applies to addition and multiplication. Example: a+b=b+a and a*b=b*a. It means that when you switch something around it is still equal
I would really really appreciate it if you marked me as brainiest ☆〜(ゝ。∂)
Answer:
The left one and middle one
Step-by-step explanation:
same angles and length-width ratios
Step 1: Add 6 to both sides.
|
2
x
+
3
|
−
6
+
6
=
11
+
6
|
2
x
+
3
|
=
17
Step 2: Solve Absolute Value.
|
2
x
+
3
|
=
17
We know either
2
x
+
3
=
17
or
2
x
+
3
=
−
17
2
x
+
3
=
17
(Possibility 1)
2
x
+
3
−
3
=
17
−
3
(Subtract 3 from both sides)
2
x
=
14
2
x
2
=
14
2
(Divide both sides by 2)
x
=
7
2
x
+
3
=
−
17
(Possibility 2)
2
x
+
3
−
3
=
−
17
−
3
(Subtract 3 from both sides)
2
x
=
−
20
2
x
2
=
−
20
2
(Divide both sides by 2)
x
=
−
10
<u>Answer:</u>
x
=
7
or
x
=
−
10
Answer: 1. 7
2. 100
3. 193.8
4. 0.8
5. 90.6
Step-by-step explanation:
1. Given the data 9,3,10,12,4,5,12,2
For finding the median we arrange it in ascending order
2,3,4,5,9, 10,12,12
Since the no of observations are even
∴ median =
=
=
=7
i.e. Median =7
2. Given the data
23, 95,100,23,100,100
Since the no 100 is repeated thrice i.e. the maximum no of times
∴ Mode=100
3.
Given the data
108, 305,252,113, 191
Mean=
=
=193.8
4. Money spent in the first week
= $11.52, $6.48, $5.99, $14.00, and $9.50
Total for the first week
=11.52+6.48+5.99+14.00+9.50
=$47.49
Now she spent $4 more in the second week
i.e.$47.49+4
=51.49$
Increase in mean =
=0.8
5.
Given
2 students scored 100 each
9 students scored 95 each
10 students scored 90 each
3 students scored 80 each
1 student scored 70
Total score of students =
=2265
The average score
=
=90.6
Answer:
(-8,-5)
Step-by-step explanation: