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3 years ago

What is the value of m2 -2mn+n2 for m=-2 and n=4? 0 0 -36 -4 04 36

Mathematics

1 answer:

GuDViN [60]3 years ago

5 0

Answer:

Step-by-step explanation:

Given

m² - 2mn + n² , substitute values

= (- 2)² - 2(- 2)(4) + 4²

= 4 - 2(- 8) + 16

= 4 + 16 + 16

= 36

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3 years ago

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A rectangular board has an area of 648 square centimeters. The triangular part of the board has an area of 162 square centimeter

maksim [4K]

Answer:

25%.

Step-by-step explanation:

Let E be the event that the dart lands inside the triangle.

We have been given that a rectangular board has an area of 648 square centimeters. The triangular part of the board has an area of 162 square centimeters.

We know that probability of an event represents the chance that an event will happen.

$\text{Probability}=\frac{\text{Favorable no. of events}}{\text{Total number of possible outcomes}}$

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$\text{Probability that dart lands inside the triangle}=0.25$

Convert into percentage:

$0.25\times 100\%=25\%$

Therefore, the probability that dart lands inside the triangle is 25%.

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3 years ago

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The area of circle Z is 64ft?.

Dennis_Churaev [7]

Answer:

r=8

Step-by-step explanation:

Using the formula they gave us you could plug in the area (64) and divide it by pi which cancels out the pi so taking the square root of 64 gives you 8FT

Hope this helps :)

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