I need help ty

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

If cos(θ)=2853 with θin q iv, what is sin(θ)?