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3 years ago

How to find square root of 18

Mathematics

1 answer:

likoan [24]3 years ago

7 0

Answer:

There is a very complicated paper-and-pencil method to calculate the square root one digit at a time.

Step-by-step explanation:

We know that 4 is the first digit of our answer, so write it down.

Multiply the top number by the left number (4 x 4)

Write it down below the 18 and subtract (18 - 16 = 2)

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3 years ago

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2 years ago

What is the height of the parallelogram?

sleet_krkn [62]

Answer:

6 cm

Step-by-step explanation:

The area of a parallelogram is found by

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3 years ago

Read 2 more answers

Please help me. I need help thank you.

STatiana [176]

Answer:

Step-by-step explanation:

the ratio is 1:2

so,

$4*2=8\\7*2=14\\1*2=2$

the only shape with those numbers is C

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2 years ago

John wants to nail a thumbtack on his circular board, pictured below. If the thumbtack is equally likely to be placed anywhere o

Nikitich [7]

Answer: A. 51%

Step-by-step explanation:

Area of circle = $\pi r^2$ , where r = radius of the circle.

In the figure below, we have the complete question.

According to that,

Radius of outer circle = 7ft

Radius of inner circle = 5ft

The probability that the thumbtack will be placed on the inner circle

$=\dfrac{\text{Area of inner circle}}{\text{Area of outer circle}}\\\\=\dfrac{\pi (5)^2}{\pi (7)^2}\\\\=\dfrac{25}{49}$ [π is canceled from numerator and denominator

in percent, $\dfrac{25}{49}\times100=51.0204081633\%\approx51\%$

So, the probability that the thumbtack will be placed on the inner circle = 51%

Hence, the correct option is A. 51%.

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3 years ago