HistoryLee
HistoryLee HistoryLee
  • 14-11-2018
  • Mathematics
contestada

z÷3-4z+4(z-5) when z=15 help please

Respuesta :

mathstudent55
mathstudent55 mathstudent55
  • 14-11-2018

z ÷ 3 - 4z + 4(z - 5); z = 15

z ÷ 3 - 4z + 4(z - 5) =

= 15 ÷ 3 - 4(15) + 4(15 - 5)

= 5 - 60 + 4(10)

= -55 + 40

= -15

Answer: -15

Answer Link
tarhunbalthazar
tarhunbalthazar tarhunbalthazar
  • 14-11-2018

Substitution: 15 / 3 - 4(15) + 4(15-5)

The solving for some: 5 - 60 + 40

And the combining them: 45 - 60

And the answer is: -15

Answer Link

Otras preguntas

A certain bacteria doubles the number of its cells every 20min. A scientists puts 50 cells in a culture desk. How many cells will be in the culture dish after 2
What is 4(x+3) thank you
2.51 in expanded and word form
What was the role of a Private during WW1?
Solve the equation for x∈Z -x² +8x -14 ≥ 0
a pack of 12-8 ounce bottles of water costs $3.36.What is the unit cost per ounce of bottled water?$0.03 per ounce$0.04 per ounce$0.28 per bottle$0.42 per bottl
how do I do these 2? Explain in steps please!
A membership to the gym costs $23 per person in 1995. The membership cost has increased by an average of $6 per person for each year since 1995.a. Write a linea
How do you calculate how many tenths are in 20.4?
Five more than twice a number is 17.