josavage josavage

12-05-2020
Mathematics

contestada

What is the value of the expression when n=3

-2n(5+n-8-3n)

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

12-05-2020

Answer:

-42

Step-by-step explanation:

-2n(5+n-8-3n)

Combine like terms

-2n (13 -2n)

Let n =3

-2*3 (13 -2(3))

-6 (13 -6)

-6 (7)

-42

Answer Link

Otras preguntas

A 1.205 g sample mixture of lithium hydrogen carbonate is decomposed by heating. If they mass loss is 0.275g, what is the percentage of LiHCO3 in the unknown mi

31/8 as an improper fraction

Prokaryotic and eukaryotic cells have many differences, but they also share some common features. Which of the following may be found in either type of cell?

Tristan swam around a lake 8 times. The distance around the lake was 0.25 miles. He swam at an average of 60 minutes per mile. Which explanation correctly tel

Plzz answer I don't understand

What is the volume of 35.0 g of propylene glycol if the density of propylene glycol is 1.036 g/ cm3? A.33.8 cm3 B.33.78 cm3 C.34 cm3 D.33.784 cm3

Otro nombre con la que se le conoce a la laringe

Critically discuss the extent to which international community put pressure on the national party government reform apartheid system until 1980s

Write a matrix that represents the system of equations below: 7x-3y=21 and 5x-y=85

I don't know how to start or do number 21. I'm completely lost. I know the answer is 15 from the answer key.