When is estimation an effective way to determine an answer?

Rational numbers - 19-+11

Ling bought 3 DVDs for $15.95 each and a DVD player for $64.99. After sales tax, her total came to $119.89. What is the sales tax rate? Round your answer to the nearest hundredth, if necessary.

What are four consecutive odd integers that equals 184

3 times the sum of a number and 4

Rearrange the equation 5x-3y+9=0 from standard form to slope/y-intercept form.

find three consecutive even integers so that the twice the sum of the second and third is twelve less than six times the first

The top students in a distance throwing competition are shown in a table. how many yards did the winner of the competition throw the ball? ashley 162 craig 156 fernando 175 robert 166

What is the height of a triangle whose base is 8.6 centimeters and whose area is 79.12 square centimeters? round to the nearest tenth

Tanya likes to take walks around the pentagonal garden at her local park. The garden on the left has congruent sides. If Tanya starts at one vertex of the pentagon and walks all the way around the garden, how far has she walked in total?

The surface area of a rectangular prism is found using the formula SA = 2 (lw + lh + wh), where l is length, w is width, and h is height. What is the surface area (in square meters) of a rectangular prism with length 5 m, width 12 m, and height 6 m?.