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3 years ago

12

Find the area of a circle with a radius of 2. Either enter an exact answer in terms of pi or use 3.14 for pi and enter your answ

er as a decimal

1 answer:

nadezda [96]3 years ago

3 0

12.56637

Step-by-step explanation:

A=πr2=π·22≈12.56637

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4x² - 4x + 1 each trinomial factored

Triss [41]

Answer:

$(2x-1)^2$

Step-by-step explanation:

$4x^2-4x+1=\\(2x)^2+2(2x)(-1)+(-1)^2\\\\\textrm{Using the rule }A^2+2AB+B^2=(A+B)^2\textrm{, then:}\\(2x)^2+2(2x)(-1)+(-1)^2=(2x-1)^2$

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3 years ago

Solve the equation : x^(2)+5=3(x^(2)-3)

Fittoniya [83]

Answer:

x = ± 2

Step-by-step explanation:

Given

x² + 5 = 3x² - 3 ( subtract x² + 5 from both sides )

0 = 2x² - 8 ( add 8 to both sides )

8 = 2x² ( divide both sides by 2 )

4 = x² ( take the square root of both sides )

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3 years ago

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prohojiy [21]

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Step-by-step explanation:

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3 years ago

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If the diagonal of rhombus is 40° to one of its side find the angles of the rhombus

tangare [24]

Answer:

Angles of a rhombus equal 360. Bisected adjacent angles are equal. Opposite angles are equal. Same side angles are supplementary

Step-by-step explanation:

One angle is 40, the adjacent bisected angle is also 40. Opposite angles are equal so the opposite angle is 80 degrees (the bisected angles are each 40).

Same side angles are supplementary (add up to 180 degrees) So the supplementary angle of the 80 degree angle is 100 degrees, and its opposite angle is also 100 degrees. The angles of a rhombus add up to 360...80+80=100+100= 360.

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4 years ago