Question

I need help pls need the answers by today

Answer 1

71. 19 72. 100 73. 9 74.1 75. 90 76. 4

Explanation:

#71.

Start with 2b-a

Plug in the given numbers where the variables are.

Now the equation is 2(12) - 5

Solve 2(12) - 5

2(12) = 24 24 - 5 = 19

#72.

Start with d(ab-c)

Plug in the given numbers where the variables are.

Now the equation is 2((5×12) - 10)

Solve in the parenthesis first.

5×12= 60 60-10=50 2(50)= 100

#73.

Start with 3+
`(b)/(d)`

Plug in the given numbers where the variables are.

Now the equation is 3+
`(12)/(2)`

Solve.

`(12)/(2)` = 6 3+6 = 9

#74.

Start with
`(4a)/(b+4d)`

Plug in the given numbers where the variables are.

Now the equation is
`(4(5))/(12+(4x2))`

Solve.

4(5)= 20

(4×2)= 8 12+8= 20

Now the fraction is
`(20)/(20)` = 1

#75.

Start with 2a² - c

Plug in the given numbers where the variables are.

Now the equation is 2(5)² - 10

Solve 2(5) = 10 10² = 100 100-10= 90

#76.

Start with b - c + d

Plug in the given numbers where the variables are.

Now the equation is 12 - 10 + 2

Solve.

12 - 10 = 2 2 + 2 = 4