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2 years ago

Suppose you estimated square root of 12 by averaging a square like rectngle.What would be a reasonable estimation?

Mathematics

1 answer:

sesenic [268]2 years ago

5 0

Answer:

3.5.

Step-by-step explanation:

3^2 = 9

and 4^2 = 16 so the square root is between 3 and 4.

Take a rectangle 3.4 by 3.6:

the area = 3.4 * 3.6 = 12.24 so an estimate of the square root could be 3.5.

3.5 * 3.5 = 12.25.

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2 years ago

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2 years ago

Read 2 more answers

145 300 610 1230

Vlad1618 [11]

Multiplying by 2 and then adding 10 145*2=290+10=300
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3 years ago

140 subtracted from the square of a number the result is three times the number find the negative solution

natima [27]

Answer:

$Suppose~that~the~number~is~x.\\According~to~question,\\x^2-140=3x\\or, x^2-3x-140=0\\From~the~quadratic~formula,\\x = \frac{-(-3)+\sqrt{(-3)^2-4(1)(-140)} }{2(1)} ~and ~x= \frac{-(-3)-\sqrt{(-3)^2-4(1)(-140)} }{2(1)} \\or, x = \frac{3+\sqrt{9+560} }{2}~and~x=\frac{3-\sqrt{9+569} }{2}\\or, x = \frac{3+\sqrt{569} }{2}~and~x=\frac{3-\sqrt{569} }{2}\\So,~the~required~negative~number~is~\frac{3-\sqrt{569} }{2}.$

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2 years ago

Franklin rides his bike to the beach averaging 18mph. He rides home along the same route. What speed must he average on the way

Sedaia [141]

Answer:

24 mph

Step-by-step explanation:

Hi there !

Vm = 21mph

V1 = 18mph

V2 = ?

Vm = (V₁ + V₂)/2

2Vm = V₁ + V₂

V₂ = 2Vm - V₁

replace Vm ; V₁

V₂ = 2×21mph - 18mph

= 42mph - 18mph

= 24 mph

Good luck !

8 0

3 years ago

Suppose you estimated square root of 12 by averaging a square like rectngle.What would be a reasonable estimation?​

Suppose you estimated square root of 12 by averaging a square like rectngle.What would be a reasonable estimation?