Atypical multivitamin tablet can contain 2.0 mg of vitamin b2 (riboflavin), and the rda is 0.0030 g/day. how many such tablets should a person take each day to get the proper amount of this vitamin, assuming that he gets none from any other sources?

A person must take one and a half multivitamin tablet to get the recommended daily allowance of riboflavin which is equivalent to 3.0 mg/day.

This problem can be solved through unit conversion and ratio and proportion.

STEP 1: Sort the given from the problem and identify what is unknown.

Given:

Unknown: the number of multivitamin table that has 0.0030 g of riboflavin

STEP 2: Determine how many milligrams is equivalent to the recommended daily allowance of riboflavin which is 0.0300 g/day.

Remember, 1 g = 1000 mg

STEP 3: Calculate how many multivitamin tablet is equivalent to 3.0 mg of riboflavin. Use the relationship 1 multivitamin tablet = 2.0 mg of riboflavin

Therefore, to get the recommended daily allowance of riboflavin, a person must take 1 and a half tablet per day.

Keywords: conversion, word problem, RDA

a.   we have two

lines:   y = 4-x   and  

y = 8-x^-1

given two simultaneous equations that are both to be

true, then the solution is the points where the lines cross. the intersection is

where the two equations are equal. therefore the solution that works for both

equations is when

4-x = 8-x^-1

this is where the two lines will cross and that is the

common point that satisfies both equations.

b.   4-x = 8-x^-1

  x           4-x       8-x^-1

-3           7        

8.33

-2           6         8.5

-1           5         9

  0           4        

-

  1           3        

7

  2           2        

7.5

  3           1         7.67

the table shows that none of the x values from -3 to 3 is

the solution because in no case does

4-x = 8-x^-1

to find the solution we need to rearrange the equation to

find for x:

4-x = 8-x^-1

multiply both sides with x:

4x-x^2 = 8x-1

x^2+4x-1=0

x= -4.236, 0.236

therefore there are two points that satisfies the

equation.

find y:  

x=-4.236

y = 4-x   = 4 – (-4.236)

= 8.236

y = 8-x^-1 =   .236)^-1

= 8.236

x=0.236

  y = 4-x   = 4 – (0.236) = 3.764

y = 8-x^-1 =   8-(0.236)^-1

= 3.764

thus the two lines cross at 2 points:

(-4.236, 8.236) & (0.236, 3.764)

c.   to solve

graphically the equation 4-x = 8-x^-1

we would graph both lines: y = 4-x   and   y

= 8-x^-1

the point on the graph where the lines cross is the

solution to the system of equations.

just graph the points on part b on a cartesian coordinate

system and extend the two lines.   the

solution is, as stated, the point where the two lines cross on the graph.

step-by-step explanation:

mark brainliest!