• 40 people responded that they use mouthwash. • Of the people who use mouthwash, 30 people use floss.
• 55 people responded that they do not floss.
• 45 people responded that they don't floss and don't use
mouthwash.
Among the people who do not use mouthwash how
many more do not use floss than do?
What percentage of the people responded that they use
mouthwash, but do not floss?

so, converting firstly the mixed fractions to improper fractions and then "adding".

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.