Answer:
19/8
Step-by-step explanation:
8x-7=-12
8x=19
x=19/8
Answer:
1st number: 20
2nd number: 25
3rd number: 75
Step-by-step explanation:
x + y + z = 120
x = y - 5
z = 3y
plug that in!
(y-5) + y + (3y) = 120
remove the parenthesis (I used them to show you what I was replacing), and add like terms.
5y - 5 = 120
move -5 to the other side
5y = 120 + 5
5y = 125
divide both sides by 5
y = 25
now that you have one number, use the equations from before to solve for the rest!
x = (25) - 5
z = 3(25)
_____________________________________________________
x = 20
y = 25
z = 75
Answer:
A
and
D
Step-by-step explanation:
Because if you simplify the equation theb you get 8x+4 therefore D is equivalent to it. A is also equal to D which make it equivalent to the equation as well.
Yes, because there is no other way to be more simpler
Answer:
10 one-millimeter cubes
Good luck on your quiz homework etc
Source of answer: https://bigideasmathanswer.com/big-ideas-math-answers-grade-6-chapter-7/
