A lot is 21 ft by 30 ft. To support a fence, an architect wants an upright post at each corner and an upright post every 3 ft in between. How many of these posts are needed?

14 less than 8 times 8 number is 3 more than four times the number what is the answer

6,8,10,12 arithmetic or geometric

Solving systems of equestrian by eliments y=3x-5 2x-y=11

Rre25. find an equation involving g, h, and k that makes this augmented matrix correspond to a consistent system: 2 4 1 4 7 g 0 3 5 h 2 5 9 k 3

What is 2/9 - 2/5 + ( - 2/15) =

The sum of the measures of angle A and angle B is 180°. Which term describes the relationship between angles A and B? adjacent angles supplementary angles complementary angles vertical angles

A toy store's percent of markup is 45%. a model train costs the store $50. find the markup. a. $72.50 b. $22.50 c. $27.50 d. $111.11

A herd of 49 horses has 19 white and some black horses. What is the ratio of black horses to all horses?

At most restaurants, the more food you order, the more money you have to pay. This is true whether you go to an overpriced "gourmet" restaurant where the plates are tiny but very expensive, or to a cafeteria where the portions are huge and the

What's the inequality of 4n-8<40