kimyoyo637 kimyoyo637
  • 23-08-2021
  • Mathematics
contestada

if n(A) = 12, n(b) = 9 and n(AuB) = 16 then find the value of n (A-B)​

Respuesta :

Аноним Аноним
  • 23-08-2021

Question has a slight error .we should find n(A[tex]\cap[/tex]B)

  • n(A)=12
  • n(B)=9.
  • $n(A\cup B)=16$

[tex]\boxed{\sf n(A\cup B)=n(A)+n(B)-n(A\cap B)}[/tex]

[tex]\\ \rm\longmapsto n(A\cap B)=n(A)+n(B)-n(A\cup B)[/tex]

[tex]\\ \rm\longmapsto n(A\cap B)=12+9-16[/tex]

[tex]\\ \rm\longmapsto n(A\cap B)=5[/tex]

Answer Link

Otras preguntas

Geothermal energy can be used to.... A)completely replace fossil fuels B)generate electricity by creating steam C)can be utilized equally everywhere
Given the following system of equations and its graph below, what can be determined about the slopes and y-intercepts of the system of equations? x + 2y = 8 2x
i need help with iready level f for the passage
Help me find Angle AJL
What is heat, and how does it affect the molecules in a substance?
Use the word abdominal correctly
what are the exact solutions?
7. Ordered: Robinul 0.15 mg IM stat On hand: Robinul 0.2 mg/ml W 8. Ordered: Tranxene 0.0075g po nightly at bedtime On hand: Tranxene 3.75 mg tablets 9. The des
A set of data is normally distributed with a mean of 40 and a standard deviation of 2. What percent of the data is in the interval 38 42?
Write the equilibrium constant expressions for the following equilibria. 4. CCl4(g) + HF(g) ⇌ CFCl2(g) + HCl(g) 5. NH4Cl(s) ⇌ NH3(g) + HCl(g) 6. SO3(g) + H2O(1)