Answer:
x = 4
Step-by-step explanation:
The absolute value of 5x is still 5x.
5x - 2 = 18
Add 2 to both sides
5x = 20
Divide both sides by 5
x = 4
let
x-------> the number of Lucy's orders
y-------> the number of Sam's orders
z-------> the number of Bob's orders
we know that
<u></u>----> equation A
-----> equation B
-----> equation C
substitute equation B and C in equation A
find z
find y
therefore
<u>the answer is</u>
the number of Lucy's orders is
the number of Sam's orders is
the number of Bob's orders is
Answer: B
Step-by-step explanation:
And also why do you have only 1 hour out of 16 to complete a test?
<span>3x + y= 17 (a)
4x + 2 y = 20 (b)
Multiply (a) by 2:
6x + 2y = 34 (a)
4x + 2y = 20 (b)
make: (a) - (b)
2x = 14 -----> x =7
-------------------------------
Replace the value of x = 7 in one of anterior equation:
</span>3x + y= 17
3 x 7 + y = 17
21 + y = 17
y = 17 - 21
y = -4
(0,-9) could be a solution