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Aloiza [94]
3 years ago
8

A rectangle has length 8cm the area is 20cm^2

Mathematics
1 answer:
nadya68 [22]3 years ago
5 0

Answer:

Since Rectagle area is found by Length * Width, 20/8 would give the width of 2.5cm, if the length was increased by 2cm, and the area by 4cm, you would now do 24/10 to get the width which is 2.4, 5 percent of 2.5 is found by multiplying 2.5 by 0.05 which is 0.125, and 2.4 is only .1 less from 2.5 so yes noah is indeed correct, for that the width is decreased by less than 5%

Step-by-step explanation:

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Step-by-step explanation:

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8 0
4 years ago
Mrs. R is pregnant and very worried that the child will have beta-thalassemia. What is the probability that the child will have
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Answer:

There are three kind of beta-thalassemia.

Total possible outcome=  3 types of beta- thalassemia + 1 [child will have no trace of disease] = 4

As we know Probability(outcome) = \frac{\text{ Total favorable outcome}}\text{Total possible outcome}

Probability that the child will have beta-thalassemia major =\frac{_{1}^{3}\textrm{C}}{_{1}^{4}\textrm{C}}

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 And , Total =_{1}^{4}\textrm{C}

Probability that the child will have no trace of the disease=\frac{1}{4}





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