What is 0.000000685 written in scientific notation?

The least common multiple of 20 and 9 is The least common multiple of 20 and 5 is

4x+y=10 complete the missing value in the solution to the equation. (__, - 6)

The sides of a triangular birdcage are consecutive integers. If the perimeter is 114 centimeters, what is the length of each side?

Amy has 3 children, and she is expecting another baby soon. Her first three children are girls. What is the probability that the fourth baby is another girl? A) 0 B) 0.06 C) 0.25 Eliminate D) 0.5

Solve the equation: 6 (x-1) = 18x

At the local burger restaurant, you can get 4 value meals for $21.88. How much is each value meal?

A pack or cardinal flower seeds cost $4.00 and a pack of petunia flower seeds cost $2.50. You buy the same number of packs of each type of the flower and spend $39. How many packs of each do you buy?

Suppose the circumference of a circle is 24 pi. What is the radius of the circle?

One parrot species that feeds on large seeds nests is in the same tree as a parakeet that feeds on small seeds. How are the birds able to coexist?

A store owner buys backpacks at a certain price and sells them at a higher price. The difference is called the markup. If she pays $21 for a backpack and adds a 40% markup on the price she paid, what is the selling price?