PLEASEEE HELP 1. Andrea ran and biked for a total of 32 mi in 4 hours. Her average running speed was 5 mph and her average bikin

Question

PLEASEEE HELP

1. Andrea ran and biked for a total of 32 mi in 4 hours. Her average running speed was 5 mph and her average biking speed was 13 mph.
Let x = total hours Andrea ran.
Let y = total hours Andrea biked.
Use substitution to solve for x and y. Show your work. Check your solution.
(a) How many hours did Andrea run?
(b) How many hours did she bike?

in progress 0
Ben Gia 4 years 2021-07-19T12:32:04+00:00 1 Answers 5 views 0

Answers ( )

  1. Nho
    0
    2021-07-19T12:33:36+00:00
    Reply

    Answer:

    Ran: 2.5hr

    Biked: 1.5hr

    Step-by-step explanation:

    x = total hrs ran

    y = total hrs biked

    4 = total hours ran + biked

    soo…..

    x + y = 4hr

    then you can convert that for solving y or x

    Ex. x = 4-y or y = 4-x

    Then just plug in either x or y

    EQUATION: 5x + 13y = 32

    Dont plug in both x or y at the same time. Pick one and solve

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )