Answer:
The answer is A
Step-by-step explanation:
Hello There,
P represent the unknown information.
Write an equation to model the problem. 28 ÷ 2 – 4 .
P number, 10, 11, or 12, will solve the equation in Part (b)? Show your work. The reason 10 solves the equation is: 28 ÷ 2 – 4 = 10.
28 ÷ 2 – 4=14-4=10
Hope this helps Have a Wonderful Day! Bye!
Answer:
3800
Step-by-step explanation:
Variables:
O - Original cost
N - New cost
c - change factor
Step 1:
Recognize that if something decreases by 19%, it is worth 19% <em>less</em>
This means that the new price, fractionally, is 100% - 19% = 81%
So we can use c as 0.81 (81/100)
Step 2:
Write an equation to represent what is happening
N = O * c
Step 3:
Sub in what we know
3078 = O * 0.81
Step 4:
Rearange and solve
O = 3078 / 0.81 = 3800
Answer:
x=6.67
Step-by-step explanation:
17+x=37-2x
17+x-x=37-2x-x
17=37-3x
17-37=37-37-3x
-20=-3x
-20/-3=-3x/3
6.666667=x
Answer:
Step-by-step explanation:
x+20=11x+30 minus x from both sides
20=10x+30 minus 30 from both sides
-10=10x divide by 10
x= -1
