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Art [367]
3 years ago
9

The weights of bags of ready-to-eat salad are normally distributed with a mean of 290 grams and a standard deviation of 10 grams

.
What percent of the bags weigh less than 280 grams?




a) 13.5%

b) 16%

c) 34%

d) 36.5%
Mathematics
1 answer:
pentagon [3]3 years ago
5 0
290-10=280

280 is one standard deviation below.
All that are above mean is 50%.
One standard deviation below is 34%.
50%+34%=84%  all of these bags weigh more than 280 g.
So,
100%-84%=16%  should be bags that are less than 280 g.

Answer is b) 16 %.

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Since ΔABC ~ ΔEDC, ∠B = ∠D.

Since both triangles appear to be similar, the corresponding angles are the same, and corresponding sides are the same or have the same ratio.

We can write an equation to resemble the problem:

8x + 16 = 120

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8x + 16 = 120

~Subtract 16 to both sides

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~Divide 8 to both sides

8x/8 = 104/8

~Simplify

x = 13

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