4x +28 and 68 are vertical angles and are equal.
Set them to equal each other to solve for x:
4x +28 = 68
Subtract 28 from each side:
4x = 40
Divide both sides by 4:
x = 40/4
x = 10
The z-score is given by:
z=(x-μ)/σ
but
x-μ=52
thus
z=52/√84681
z=0.1787
Thus:
P(X≤52)=0.9633
Answer is -10
Step by step exploration
7x=-70
x=-70/7
x=-10
Answer:
The variable x is being divided by 15 in the equation and x=15
Step-by-step explanation:
To solve for x we :
9+x/15=10
x/15=1
x=15
Answer is A bc ur dividing the quotients together
