Question

Hi I need help for my math class it’s due Saturday!

Answer 1

Answer:

a) 21m - 0.87 = m

b) m = 0.0435 mg

21(0.0435) - 0.87 = 0.0435

0.9135 - 0.87 = 0.0435

0.0435 = 0.0435

True statement, so correct

c) 21m - 0.87 = m

20m = 0.87

m = 0.87/20

m = 0.0435 mg

Answer 2

Answer: 0.0435 mg

Step-by-step explanation:

Let x represent the amount of riboflavin in 21 servings of raw almonds.

Then, 1 serving = x - 0.87

and 21 servings = x

$\underline{\text{Proportion:}}\\\\\dfrac{\text{servings}}{\text{riboflavin}}:\dfrac{1}{x-0.87}=\dfrac{21}{x}\\\\\\\\\underline{\text{Cross multiply and solve:}}\\\\21(x-0.87)=x\\21x-18.27=x\\20x\quad \qquad =18.27\\x \qquad \qquad =0.9135$

1 serving = x  -  0.87

               = 0.9135 - 0.87

                = 0.435