Three more than 7k written in algebraic expression

A trail is 3 2/10 km long. Cassidy has run 9/10 of the distance of the trail. About how far has Cassidy run? Estimate by first rounding each number to the nearest 1/2 A. 2 km B. 3 km C. 4 km D. 7 km

It takes 4 hours to paint 15 doors at the factory at this rate how many hours will it take to paint 90 doors

Find a quadratic equation whose roots are 1.5 + √2 and 1.5-√2expressing it in the form of ax^2+bx+c+c=0 where a, b and c are integers with step by step explanations

Simplify sin 4 theta/1+cos4 theta using half angle formula

A high school had 740 Students at the start of the year, but than some students left the school. after that the school had 726 students. if s=the number of students who is left at the school, which mathematical sentence expresses the information?

Calculate the number of acres required to produce 1,000 gallons of oil in one year from microalgae and soybeans. Which one (microalgae or soybeans) requires less space?

Rachel runs 3.2 miles each weekday an 1.5 miles each of the weekend. how many miles will she have run in 6 weeks

Divide. (-10m9 - 4m8 - 12m6) : 2m4 A: - 5m5 - 2m4 - 6m2 B: - 5m5 - 2m4 - 12m6 C: - 5m5 - 4m8 - 12m2 D: - 5m9 - 2m8 - 6m6

John rides his horse with a constant speed of 13 kilometers an hour how long will he take to travel a distance of 28.2 kilometers

How many square inches of tin are needed to make the top of a can that is 10 inches in diameter?