Answer:
z = 21 ; y= 16
Step-by-step explanation:
first of all we have to isolate a variable.
In second expression we can obtain:
3y = 2z+6
y = 2/3 z + 2
now we have to substitute this value in the first equation and solve it
8(2/3z+2)-5z = 23
16/3z + 16 -5z = 23
16z +48 - 15z = 69
z = 21
now we have to substitute z in the second equation:
y = 2/3 (21) +2
y = 14+ 2 = 16
y = 16
Answer:
8/11
Step-by-step explanation:
Only 3 of the nickels are neither dimes nor Canadian. The other 8 of 11 coins are dimes or Canadian. The probability of choosing one of them at random is 8/11.
Answer:
5y+4
Step-by-step explanation:
Combine Like Terms:
=−4y+7+9y+−3
=(−4y+9y)+(7+−3)
=5y+4
Letter A is the correct answer because you can obviously exit out c and d, but yo get a good phrase you might as well have some parentheses to make this work because without it, would be confusing :)