Decide whether the rates are equivalent 30 beats per 20 seconds, 90 beats per 60 seconds. Show your work.

Mathematics

2 answers:

siniylev [52]3 years ago

8 0

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lesantik [10]3 years ago

8 0

Decide whether the rates are equivalent

A. 30 beats per 20 sec, 90 neats per 60 sec

B. 15 pages in 20 min., 10 pages in. 15 min

Math - Damon Tuesday, January 6, 2015 at 7:08pm30/20 = 1.5 , 90/60 = 1/5 the same

15/20 = 3/4 , 10/15 = 2/3 NOT the sameMath - Anonymous Tuesday, November 3, 2015 at 9:16pmHehrbrMath - Mr Tuesday, February 16, 2016 at 5:45pm0.75+0.6+1.5+1.5= 4.35Math - Anonymous Thursday, May 5, 2016 at 5:05pmYesMath - Tuesday Thursday, January 26, 2017 at 5:40pm6 x3Math - Danisha Thursday, February 16, 2017 at 6:25pm

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Please show your work and explain it.

Maru [420]

Answer:

$f(x)=\dfrac{x+2}{2(x-2)}$

Step-by-step explanation:

Remember when you divide fractions, you need to get the reciprocal of the divisor and multiply. So your first simplification would be:

$\dfrac{x^2+4x+4}{x^2-6x+8}\div\dfrac{6x+12}{3x-12}\\\\=\dfrac{x^2+4x+4}{x^2-6x+8}\times\dfrac{3x-12}{6x+12}\\\\=\dfrac{(x^2+4x+4)(3x-12)}{(x^2-6x+8)(6x+12)}$