Answer:
first number= 19/5
second number= 2/5
Step-by-step explanation:
first number= a
second number= b
a+3b=5 equation 1
b+2a=8 equation 2
using equation 2 we have
b=8-2a
using equation 1 we have
a+3(8-2a)=5
a+24-6a=5
24-5=6a-a
19=5a
a=19/5 = first number
so using b=8-2a
we have
b=8-2(19/5)
b=8-(38/5)
b=2/5 = second number
20. 3 notebooks
21. 2ab, the coefficient is 2
22. t = 16
Hope this helps! :)
Answer:
10
Step-by-step explanation:
130+40+x =180
x=10
option 2 is correct
It’s 13.6
For finding perimeter, you just add all your values together.
