7. C(n, 2) 8. C(11, r) = 165 9. C(8, 6) = 78 %3D

Q: 12+(-3 1/10)

A: We make 3 1/10 into an improper fraction

Q: 23x-2=16

A:

Q: 103= 10%3D 2.

A: 102  = 100

Q: 1x-3=23

A: Given 1x - 3 = 23

Q: 30+120

A: Given; 30+120.

Q: 4x-10 14 =10

A:

Q: 2. 1/4 4.

A: We will use basic arithmetic operation to solve

Q: 5 plus 5

A: Given5+5

Q: 20+(-4)(-5)

A: The calculation for 20+(-4)(-5) is presented as follows:

Q: Wht is 10-73

A:

Q: What is 6 times 4

A:

Q: -18-3s=15

A: Given -18-3s=15

Q: 16+29

A: Given :16+29

Q: 15+c=-12

A:

Q: 12 + 12 = 10 + 10 =

A:

Q: 11+2x=31

A:

Q: 12

A: Explanation and solutions is given below....

Q: what is 2 times 54?

A: We have compute 2 times 54 that 2×54. Hence, 2×54=108

Q: -8 = 6+n

A:

Q: 3&4 please

A: (3) Given that, the normal distribution has a population mean is, μ=50 The expected value of the…

Q: 6 - 8 =

A: 6-8= -2

Q: 5x - 6 = 14

A:

Q: 6+197

A: Given,          6+197

Q: Answer 2

A:

Q: Evaluate 4a + b - 12 when a = - 1 and b = 2.5

A: See the solution below:

Q: 23x-47=12

A: Given Data: Equation: 23x-47=12   To obtain the value of x, various mathematical operations like…

Q: 30x-121=29

A:

Q: 16+3•5

A: Given:  16+3*5

Q: 100 %3D 41

A:

Q: 4 8 22

A: Given Triangle

Q: Ty

A:

Q: What are the values of u5 and u1?

A: This is the problem of optimisation.

Q: 10+200

A: Using sum rule

Q: 3+58=

A: Introduction: Addition is a binary operation. It can be performed between two numbers. The set of…