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
VER TODAS LAS RESPUESTAS ( 63+ )
Otras preguntas
What is the range for the following set of numbers?57, -5, 11, 39, 56, 82, -2, 11, 64, 18, 37, 15, 68
If 0.507J of heat leads to a 0.007 degree C change in water, what mass is present? 0.0337 g 17.3 g 0.239 g 0.300 g
Which of the following cash crops are MOST LIKELY to be grown in the highlighted country? A. Rubber B. Cotton C. Rice D. Coffee E. Tea
Which of the following occurs as protein form?
can someone help me pls
In triangle ABC, AC=13, BC=84, and AB=85. Find the measure of angle C
A 0.0780 kg lemming runs off a 5.36 m high cliff at 4.84 m/s. What is its potential energy (PE) when it jumps?
hello help pleaseExpress [tex] \frac{3}{5} [/tex]of a right angle triangle to radian measure and can some anybody help me by looking one old question from my pr
Complete the sentence below. The expression 52x – 169 is equivalent to 13( )
What group of people might the Medical Man represent in The Time Machine? A. Doctors B. Lawyers C. Politicians D. Teenagers