If you distribute -4 through (5k-7), it equals -20k + 28. Then put on the other -2k on that side of the equals sign and you should have -22k + 28 = -2(9k+5) Then you need to distribute -2 through (9k+5) which equals -18k - 10. You then should have -22k+28=-18k-10. Add 22k to both sides to cancel it out, then you should have 28=4k-10. Add 10 to both sides to get the 4k by itself, which will be 38=4k, then divide both sides by 4 to get k by itself. 38/4 = 19/2. k = 19/2
Hermione has 7-$5 dollar bills and 5-$1 dollar bills.
Answer:
32 degrees
Step-by-step explanation:
Hope this helps.
Answer:
6 minutes
Step-by-step explanation:
There are two ways you can simplify this problem:
1. change the dimensions to 3 dm × 3 dm × 5 dm, because 1 L = 1 dm³
2. Adjust the 5 dm dimension to 4/5 that value: 4 dm. Then you're filling a whole volume that is 3 dm × 3 dm × 4 dm = 36 dm³ = 36 L.
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At the rate of 6 L/min, the tank will be filled to the desired level in ...
(36 L)/(6 L/min) = 6 min . . . . and 0 seconds
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A decimeter is 0.1 m = 10 cm, so 1 cubic decimeter is (10 cm)³ = 1000 cm³ = 1 liter. Using decimeters as the unit of measure in volume problems can make conversion to liters trivial.