Answer:
Step-by-step explanation:
x - 2 (x - 
) = 2 (4 - x) + 10
x − 2 × 
=2(4−x)+10
x−(−x)=2(4−x)+10
x+x=2(4−x)+10
2x=2(4−x)+10
2x=8−2x+10
2x=−2x+18
2x+2x=18
4x=18
In this question, we're trying to find cost of one sandwich.
To find this, we must make a systems of equation from the given information:
We would represent sandwiches as "s" and drinks as "d".
Systems of equations:
6s + 4d = 53
4s + 6d = 47
Solve for s:
6(6s + 4d = 53)
-4(4s + 6d = 47)
36s + 24d = 318
-16s - 24d = -188
--------------------------
20s = 130
Divide both sides by s
s = 6.50
This means that one sandwich costs $6.50
Answer:
$6.50
Answer:
x = 4
Step-by-step explanation:
6^5x-4=6^4x
6^ (5x-4) = 6^ (4x)
Dividing through by 6
5x - 4 = 4x
Collecting Like Terms
5x - 4x = 4
x = 4
Answer: 4/5
Step-by-step explanation:
Step 1: Put the percent over 100
- 80/100
Simplify it by dividing both the numerator and denominator by a common factor, aka 10
- 80/10 - 8
100/10 - 10
- 8/10
Simplify it again by dividing both the numerator and denominator by a second common factor, aka 2
= 8/2 - 4
10/2 - 5
- 4/5
Cannot be simplified any further.
