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Earn +20 ptsQ: How do you factor r2 plus 4r plus 4?
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Anyone know the answer to this math question 4r plus 3 equals 3- 2 what is r and just to let you all know it's not 1?
4r+3 = 3-2 4r = 3-3-2 4r = -2 Divide both sides of the equation by 4 to find the value of r: r = - 1/2
What is the volume of a sphere with a surface area of 452.39cm2?
Surface area of sphere = 4r 4 xπ x r2 = 452.39 cm2 r2 = 452.39/(4) = 36.01831210191 cm2 r = sqrt(36.01831210191) = 6 cm(approximately) And volume is given by V = 4πr3 = 4 x π x 63/3 cm3 = 905.46912199289 cm3
Factor A2 plus 4a plus 4 - b2?
a2 - 4a + 4
Factor 2x2 plus 6x plus 4?
(2x+4)(x+1)
What is 3 plus 10-r plus 6r equals -3 plus 9r plus 5-5?
3+10-r+6r = -3+9r+0 13+5r = -3+9r 16 = 4r r = 4
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