A rectangle watch of ground is 5 m longer than it is wide its area is 20,000 m²
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Answer 1
Answer:
Lets call x how wide it is, and write the area equation: area = width*length a = (x)(x + 5) = 20000 expand it: x^2 + 5x = 20000 make a quadratic trinomial: x^2 + 5x - 20000 = 0 lets apply the general quadratic formula to solve: x = (-5 +- √(25 + 80000))/2 x = (-5 +- 282.89)/2 we take the positive solution: x = (-5 + 282.89)/2 x = 138.94 therefore the rectangle width is 138.94 m and 143.94 m long
Juanita is 15 years old and her brother is 5. what is the ratio of juanitas age to her brother age.
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It is a 3 to 1 (3:1) ratio
Marisa wants to buy a DVD player that costs$150. She already saved $80 and plans to save an additional $10 each week. Write an equation that represents this.
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Answer:
$80 + ($10×7) = $150
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What is 0.69 expressed as the quotient of two integers in simplest form
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0.69 can be expressed as a fraction. 69 / 100
The fraction 69 / 100 cannot be simplified anymore. So that's already the simplest form.
So the fraction is 69 / 100.
the radius and height of a cylinder are in the ratio 5:7.if it's volume is 4400cm cube, find the radius of the cylinder
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V of cylinder= πr2h ...4400= 22/7×5X2×7x. . , x=8 . . . R = 5×8. . R=40
The most commonly used form of markup is based on?
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Best Answer is : Changing more than the cost that it took you to produce .
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Ian walks 4 1/2 miles everyday. How many miles does Ian walk in 4 1/2 days?
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mutiply 4 1/2 by 4 1/2 and you get 20.25 and 25/100 which can be sipmlified to 1/4 so 20.25 is 20 1/4