Let's take one side of the two equal lengths as r
third side is s.
so the total perimeter is r + r + s
2r + s = 23
According to the statement of third side s,
5 less than twice the length of one of other
s = 2r - 5
we have 2 equations and 2 unknowns. so we can find out the values of those letters.
2r + s = 23
2r - s = 5
4r = 28
r = 7
s = 9
Therefore the third length will be equal to 9 cm.
the answer to 2x2 is 4 so 2 x 2= 4
Answer:
274 parents
Step-by-step explanation:
38 tables times 12 per table
38*12=456
456-182=274
The new mixture has a total volume of 5 L + 9 L = 14 L.
70% of the 5 L alcohol solution is alcohol, so that it contributed 3.5 L of alcohol to the mixture. The pure water contributed no alcohol. So in the mixture, the concentration of alcohol is
3.5 L / 14 L = 0.25, or 25%
8.5 • 5 = 42.5
2.5 • 5 = 12.5
42.5 - 12.5 = 30
The first electrician worked 30 hours longer than the second electrician.
