First lets get the total weight that Hailey bought, that is working with fractions:
1 3/7 = 7/7 + 3/7
= 10/7 = 1.43
so we use a rule of three to solve this:
1.43 kg ------> $13
1 kg --------> x
x = (1)(13)/(1.43)
x = 9.09
therefore a 1kg of sliced salami costs $9.09
Answer: B and E
Step-by-step explanation: Trust me, this is correct
6x -18 = 3x + 9
3x = 9 + 18
X = (9+18) divided by 3
3L + 5S = 90.....multiply by -3
9L + 7S = 215
-------------------
-9L - 15S = -270 (result of multiplying by -3)
9L + 7S = 216
-------------------add
- 8S = - 54
S = 54/8 = 6 3/4 or 6.75 kg (for the small boxes) <===
3L + 5S = 90
3L + 5(6.75) = 90
3L + 33.75 = 90
3L = 90 - 33.75
3L = 56.25
L = 56.25/3
L = 18 3/4 or 18.75 kg (for the large boxes) <===
Answer:
After simplifying, our answer is 10
Step-by-step explanation:
20-31 gives the distance between 20 and 30
Now, for -5 and -15
The similar expression to write will be -5-(-15)
Simplifying this, we have;
That would be -5+15 = 10
