Bill bought 2 cups of coffee for $3 each and 2 muffins for $3 each. he used this expression to calculate the total amount he spent. (2 × 3) + (2 × 3) what is another expression to calculate the total amount spent? a) (2 + 2) × 3 b) 2 + (3 + 3) c) 2 × 3 × 3 d) (2 + 3) × (3 + 2)

12

Step-by-step explanation:

M y    M i n d

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0

6.25 grams

step-by-step explanation: