ria5 ria5
  • 23-08-2015
  • Mathematics
contestada

D=20mi, r=30 mi/h, what is the time

Respuesta :

Аноним Аноним
  • 23-08-2015
[tex]v=\frac{s}{t}\\\\v=30\ mph\\\\s=20\ mi\\\\subtitute\\\\30=\frac{20}{t}\to\frac{30}{1}=\frac{20}{t}\ \ \ |cross\ multiply\\\\(30)(t)=(1)(20)\\\\30t=20\ \ \ \ |divide\ both\ sides\ by\ 30\\\\t=\frac{20}{30}\to \huge\boxed{t=\frac{2}{3}\ (h)}[/tex]

[tex]1\ h=60\ min\\\\therefore\\\\\frac{2}{3}\ h=\frac{2}{3}\cdot60\ min=2\cdot20\ min=\huge\boxed{40\ min}[/tex]
Answer Link

Otras preguntas

how does removal of mud tubes affect the termites ecosystem
The skin layer that carries on cell division is the A. dermis. B. stratum germinativum. C. stratum corneum. D. keratinous layer.
Couplets typically… Question 3 options: Rhyme Have the same meter Rhyme and have the same meter Do not rhyme or have the same meter
compare the composition of pancreatic secretions in the presence of hydrochloric acid and fat??? I'm lost in biology and I'm far behind in lessons I need to cat
Question 16(Multiple Choice Worth 1 points) (09.01) A food packet is dropped from a helicopter and is modeled by the function f(x) = −12x2 + 19200. The graph
a rectangular yard is 17ft by 9ft how many feet of fence is necessary to enclose the yard
What were the patterns that people saw in the sky long ago?
The people of the Peloponnesian peninsula
Which property is illustrated by the statement 13x12=12x13
Andrés: ¿Podrías reservar la habitación para mí? Alejandro: Sí, yo la __________.