Answer:
x = - 3, y = - 1
Step-by-step explanation:
y = 7x + 20 -----> equation 1
4x - y = - 11
4x - ( 7x + 20 ) = - 11
4x - 7x - 20 = - 11
- 3x = - 11 + 20
- 3x = 9
x = 9 / - 3
x = - 3
Substitute x = - 3 in equation 1,
y = 7 ( - 3 ) + 20
= - 21 + 20
y = - 1
Hence,
x = - 3
y = - 1
Change the 30% into a decimal
so its .3
then multiply 2075/.3
and you get $622.50
Answer:
She now has 84 nickles. :)
Step-by-step explanation:
40+44=84
Answer:
=
1
2
x2+
20
3
x−3
Step-by-step explanation: