19-06-2016
Mathematics

contestada

Y varies directly as x. If y =-5 when X= 15, find x when y =3

Respuesta :

19-06-2016

y varies directly as x,
then y = kx

when y = -5, x =15
so,
-5 = k*15
k = -5/15 = -1/3

so, y = -x/3

when y = 3,
3 = -x/3
x= -3*3
x= -9.

Answer Link

Otras preguntas

The graph of f(x) = 2x^2 − 3x + 5 will be translated 8 units down, producing the graph of q(x). What equation represents the new function, q(x)?

What is 5(1-2w)+8w=15

Need help with 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12

Please help with geometry will mark branliest!

The vagina is __________. Like a rigid muscular tube at rest. Usually only two inches long at rest. Only able to expand in width during sexual arousal or childb

what is a possible solution to -7x+4>-3x-6

who is part ofsouthafrica EAP

A preterit verb is a verb in the ___ tense that shows a complete action Future Present Past

how would I write in point slope form equation of the line that passes through (-1,-1) and (1,5)?

Simplify the expression. Write the answer using scientific notation. (2 × 10^13)^-2 A.-4×10^-26 B.0.25 ×10^-26 C.2.5×10^-27 D.2.5×10^-26