Answer:
x=13.7
Step-by-step explanation:
CD=CB=6
AC=AD+CD => AC=9+6 => AC=15
AC^2= AB^2 + BC^2 => 15^2 = X^2 + 6^2 => 225 = X^2 + 36 => X^2 = 225 - 36 => X^2 = 189 => X=13.7
Answer:second option
Step-by-step explanation:
Answer:
x = 3
Step-by-step explanation:
Here, we want to find the value of x
By mathematical convention;
NM = NL + LM
Now, substitute individual values
3x + 13 = (6x-5) + (2x + 3)
3x + 13 = 6x-5 + 2x + 3
3x + 13 = 8x -2
Collect like terms
8x -3x = 13 + 2
5x = 15
x = 15/5
x = 3
Answer:
The correct answer is:
(a) Mean = 170,
Standard deviation = 30
(b) 1700
Step-by-step explanation:
Given:
(a)
Mean of monthly expenses will be:
=
=
=
Standard deviation will be:
=
=
=
(b)
The total amount of monthly expenses will be:
=
=
=
Your answer is v = -2.
To solve this equation, we need to rearrange to get v by itself and then solve:
4 + 3v = -2v - 6
+ 2v
4 + 5v = -6
- 4
5v = -10
÷ 5
v = -2
I hope this helps!