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KIM [24]
3 years ago
15

Stephanie needs to cover her yard with 410taft2of soil. She has enough for 125ft2in one bag and 65 ft2in another bag. How much m

ore square feet of soil will she need covered?
Mathematics
1 answer:
andrew11 [14]3 years ago
6 0

Answer:

Stephanie needs 220ft² of more soil to cover the rest of her yard.

Step-by-step explanation:

First add the bags she already has:125ft²+65ft²+<em>x</em>=410ft² --> 190ft²+<em>x</em>=410ft²

Second use the subtraction property of equality: 190ft²-190ft²+<em>x</em>=410ft²-190ft² ---> <em>x</em>=220ft²

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Complete Question

Researchers recorded the speed of ants on trails in their natural environments. The ants studied, Leptogenys processionalis, all have the same body size in their adult phase, which made it easy to measure speeds in units of body lengths per second (bl/s). The researchers found that, when traffic is light and not congested, ant speeds vary roughly Normally, with mean 6.20 bl/s and standard deviation 1.58 bl/s. (a) What is the probability that an ant's speed in light traffic is faster than 5 bl/s? You may find Table B useful. (Enter your answer rounded to four decimal places.)

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