Twice a certain number minus 7 is equal to 5. What is the number.

The lengths of three sides of a triangle are in the ratio 3 : 4 : 5. The perimeter of the triangle is 156 centimeters. What is the difference in length between the longest and shortest sides?

Como resolver fracciones mixtas

Find the equivalent expression for 3+2[2p+4t]

What's 12 + 4X when X = 1 1/2

What two things do we need to create an exponential function?

If the 9th day of a month is on tuesday on what day is 25th

Which polygon in the floor plan have four equal sides and four congruent angles?

At the dog show there are 4 times as many boxes as spaniels. if there are a total of 30 dogs how many dogs are spaniels

Which pairs of polygons are congruent?

Eve is going to buy 30 pens from either shop A or shop B. Shop A: pack of 10 pens for £1.90 Shop B: pack of 5 for £1.10 buy 1 pack and get 1 half price. What is the difference in cost for all 30 pens between the two shops?