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Rufina [12.5K]
3 years ago
14

Maggie had 20 ribbons. 2/5 of the ribbons are polka-dot Ted ribbons. how many are not polka-dotted?

Mathematics
2 answers:
Ipatiy [6.2K]3 years ago
6 0
20ribbons x 2/5 = 8polka-dot ribbons

20ribbons - 8 polka-dot ribbons = 12 not polka-dot

So the answer is 12 ribbons
Solnce55 [7]3 years ago
5 0
12 ribbons
p.s: im in 7th grade so you can trust me
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Answer:

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Step-by-step explanation:

Given that a  medical study investigated the effect of calcium and vitamin supplements on the risk of older Americans for broken bones. A total of 389 older Americans who lived at home and were in good health were studied over a three-year period. While all of the 389 people took in at least 700 milligrams of calcium and 200 units of vitamin D through their normal diet, 187 of them were given additional supplements containing 500 milligrams of calcium citrate and 70 units of vitamin D daily. Of the 187 who took additional supplements, 11 of them suffered broken bones over the three-year period. Of the 202 older Americans who did not take the additional supplement, 26 of them suffered broken bones over the study period.

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