alexandraemk240 alexandraemk240

01-07-2018
Mathematics

contestada

A bag has red and white counters in the ratio 4:7. If I add 4 white counters the ratio becomes 1:2. Work out the number of red counters in the bag.

Respuesta :

konrad509 konrad509

01-07-2018

[tex]\dfrac{4x}{7x+4}=\dfrac{1}{2}\\ 7x+4=8x\\ x=4\\\\ 4x=4\cdot4=16[/tex]
16 red marbles

Answer Link

Otras preguntas

No scam answers. Work fast.

Write three tasks students can perform in a digital classroom.

A cooperative effect can occur in some types of multi-subunit proteins, leading to improved function of the subunits when bound to each other. At what level of

How does the end of California's youth prison system impact local probation agencies?

mmmillie15 Drawing for class rate please and have a great day everyone. :D

What is the basic unit of structure and function of living things? a atom b molecule C cell d organ system

PLSS HELP ITS TIMED WILL MARK BRAINLIEST

0.43 (3 repeating) as a fraction

What do you risk when you engage in a lot of negative self-talk? O A. You will make too much of an effort and tire yourself out. O B. You will feel uninterested

The synopsis below most accurately represents what horror film? “A research team in Antarctica is hunted by a shape-shifting alien that assumes the appearance o