Answer:
x = 1/5
y = 6
Step-by-step explanation:
System:
{5x + y = 7
{20x + 2 = y
First equation:
5x + y = 7 -> y = -5x + 7
Plug into second equation:
20x + 2 = -5x + 7
Subtract 2 from both sides:
20x = -5x + 5
Add 5x to both sides:
25x = 5
Divde both sides by 25:
x = 5/25 -> 1/5
~~~~~~~~~~~~~~~~~~~~~~~~~~~`
Come back to the first equation:
5x + y = 7
Plus in our x:
5(1/5) + y = 7
Multiply:
1 + y = 7
Subtract 1 from both sides:
y = 6
Hope this helps, have a nice day! :D
Answer:
(4/5)[K + 8] +3n
Step-by-step explanation:
(4/5) x [K + 8] + [ 3 x n]
7,676 rounded to the nearest hundredth is: 7,700.
You are focusing on the 7676. If the 7 on the right of it has a number below five, then it would be 7600. On this hand, with it being more than 5, the correct answer is 7,700.
(X+7)-(x-2)=24..... given equation..
Remove the bracket.
X+7-x+2=24
# 15 is the final answer.
Hope it helped.
I apologise if it’s wrong.
