One canned juice drink is 20%; another is 10% orange juice. how many liters of each should be mixed together in order to get 10 l that is 18% orange juice?

Y=4x^2+x-1 solve using quadratic formula

Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.

Can any one me with the answers to these questions asap?