Answer:
Dave worked 60 hours.
Step-by-step explanation:
Let's assume that Dave worked a total of 
hours.
Since Kate worked 5 hours less than Dave: 
And Sarah worked 10 more hours than Dave: 
Combined, the three siblings worked 185 hours.
Dave worked 60 hours,
Kate worked 55 hours and Sarah worked 70 hours.
To check:
55 + 60 + 70 = 185 hours
Answer:
-2 -4
Step-by-step explanation:
It can be used on this one 10x=3
4/7m = 2/7(2m + 1)
4/7m = 4/7m + 2/7
4/7m - 4/7m = 2/7
0 = 2/7 (incorrect)
no solution
To answer this question, we first have to set up an equation with variables.
We can use "x" to represent the cost of each bracelet.
Equation: number of bracelets bought × cost of each bracelet = total cost
Number of bracelets bought: 7
Total Cost: 49
Using this information, we can fill in the equation and solve for x.
7x = 49
To isolate x, divide both sides by 7.
x = 7
Since x equals 7, we now know that each bracelet cost $7.
