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Earn +20 ptsQ: 30 x23 x 9 cm
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Continue Learning about Algebra
What is the first derivative of X to the 23 power?
(x23)'=23x22 Generally, (xn)'=n*xn-1
What is the length of the rectangle if the perimeter is 54 cm and it's length is twice it's width?
Let its width be x:- 2(2x+x) = 54 => 4x+2x = 54 => 6x = 54 => x = 9 Therefore: width = 9 cm and length = 18 cm
What is the perimeter of a rhombus whose area is 30 square cm and whose largest diagonal is 12 cm showing work?
Let the other diagonal be x If: 0.5*12*x = 30 then x = 60/12 => x = 5 The rhombus has four interior right angle triangles with lengths of 6 cm and 2.5 cm Using Pythagoras each equal sides of the rhombus works out as 6.5 cm Perimeter: 4*6.5 = 26 cm
What is the perimeter of a rectangle with the length of 34 cm and width of 30 cm?
Perimeter of rectangle = 2 x ( L + W ) = 2 x 64 = 128 cm. or Perimeter of rectangle = 2L + 2W = 68 + 60 = 128 cm.
The area of a rectangle is 243 cm2 The length is three times greater than the width What are the dimensions?
Let the length be 3x and the width be x: 3x*x = 243 3x2 = 243 Divide both sides by 3: x2 = 81 Square root both sides: x = 9 Therefore: length = 27 cm and width = 9 cm
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