His work should have looked like this.
2x + y = 5
x − 2y = 10
y = 5 − 2x
x − 2(5 − 2x) = 10
x − 10 + 4x = 10
5x − 10 = 10 When he added in both sides, he subtracted 10 from 10,
5x = 20 instead of adding 10 from 10 to make 20.
x = 4
2(4) + y = 5
8 + y = 5
y = -3
Answer:
mixed number form: 9 1/3
decimal form: 9.3 (repeating)
Step-by-step explanation:
Answer:
Therefore the total number of ways that the customer can order the smothered steak dinner is 9800.
Step-by-step explanation:
There are 7 side dishes, and types of stake and 8 toppings.
The customer will have a smothered steak dinner.
The smothered steak dinner will consist of steak and 3 different toppings and 4
different side dishes.
The number of ways steak can be selected is =
The number of ways toppings can be chosen is = 
The number of ways side dishes can be chosen = 
Therefore the total number of ways that the customer can order the smothered steak dinner is
= 5 × 56 × 35 = 9800.
Apples went up 0.75 a lb
p is the start price so new price is p + 0.75
we buy 3 lbs
3 ( p+ 0.75) = 5.88
now solve
3p + 2.25 = 5.88
-2.25 -2.25
3p = 3.63
/3 /3
p = 1.21 a lb
Answer:
18
Step-by-step explanation: