sally and Martha had the same number of postcards after Sally sold 18 of her postcards Martha had four times as many postcards as Sally how many postcards did each girl have to begin with

Whats 25000251 in word form?

If you have a bookcase that is 3 feet tall, 1 foot wide, and 4 feet long, how much space do you have for books?

4. A circle is centered at (-8, - 13) and has a radius of 13. What is the equation of the circle? * (x + 8) ² + (y + 13) ² = 169 (x + 13) ² + (y + 8) ² = 169 (x - 8) ² + (y - 13) ² = 64 (x - 8) ² + (y - 13) ² = 169

an online store sells DVDs for $10 each the shipping charge for an entire order is $5.50 francs orders d DVDs write an expression that represents the total cost of Frank's DVDs

A regular decagon has a radius of 8 cm. What is the approximate area of the decagon? Recall that a decagon is a polygon with 10 sides. A) 188 cm^2 B) 198 cm^2 C) 304 cm^2 D) 375 cm^2

What can each term of the equation be multiplied by to eliminate the fractions before solving

Find the missing number in the following pattern explain your reason 12,24, 72, and 288,

How to find the Base and height of the triangle

Lita estimates she will read 24 books during the summer. She actually reads 9 books. what is the percent error of her estimate?

We mathematical induction to prove the statement is true for all positive integers n. 8+16+24 + ... + 8n=4n (n+1)