The number of people increased by 2.
This means as a ratio it is now 6/4 as many as originally planned.
6/4 can be reduced to 3/2.
The time and the number of people are inversely proportional, so the food would last 2/3 ( inverse is flipping the original ratio over) the original length of time.
This means the length of time the food lasts is reduced by 1/3, which is 33.3%
Answer:
21
Step-by-step explanation:
(5x5) the big square - (2x2) the small square
25-4=21
2 × 8 = 16
16 + 7 = 21
so its 21/8
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Answer:
x ≈ 0.1459
Step-by-step explanation:
Since you only want a small positive solution, you can use the arcsine function to find it.
6sin(5x) = 4
sin(5x) = 4/6 = 2/3
5x = arcsin(2/3)
x = arcsin(2/3)/5
x ≈ 0.1459
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A graphing calculator can find the solution easily. It is often easiest to rewrite the equation so you're looking for a solution that makes the value zero. Here, subtracting 4 from both sides does that.