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i have a garden that measures 40x50 feet. i want to add a tile walkway around it. how wide can it be if i have 784 square feet of stones? (answer)

The perimeter of the garden is 180 feet. The length is 50 and the width is 40. You have 784 square foot tiles for a walkway around the perimeter. You will need 184 tiles to go around the perimeter one time, because you must extend the length by one tile on each end of the lengths so that all...

How do you solve 8(4)squared? (answer)

Evaluate 8x2 when x=4. What is being tested is if you know that the squared symbol relates only to the x, and not also to the 8. So, the expression 8x2 means 8xx, or (8)(4)(4) which equals 128. Instead, if you were asked to evaluate (8x)2 , that would mean that everything in the...

The problem is to solve for x when 1/2x=12. First, think about how 1/2x could be rewritten:        1/2x = (1/2)(x/1) = x/2 So, in this problem, x/2 =12. Now, multiply each side by 2. The result is x=24.

Compare and order the following fractions from least to greatest 5/4,5/12,5/6 (answer)

To answer this question you can find a common denominator for the three fractions and then compare them: 5/4 = 15/12 5/6 = 10/12 5/12 = 5/12     So, comparing the above, ordered from least to greatest is 5/12, 5/6, 5/4. You could also glance at the fractions...

What was Sergio's failing exam score? (answer)

Another way to look at this problem: Let's look at the second situation first. The 3 test scores Sergio kept resulted in an average of 80 points. That means that those 3 test scores must add up to 240 (3X80). Now, let's look at the first situation. The 4 test scores gave him an average...

how to find measures of a triangle whos second angle is 7 more than the first angle,the third angle is 23 more than three times the first angle (answer)

First, you need to know that the sum of the angles of a triangle equals 180 degrees. Now, translate the words into math: 1st angle = x 2nd angle = x+7 3rd angle = 3x+23 Now, add up the angles in terms of x: x+x+7+3x+23=180 5x+30=180 5x=150 x=30 So,...

three of four numbers have a sum of 22. if the average of the four numbers is 8, what is the fourth number (answer)

Think about working this problem backwards. First, you need to know how to find an average: Add up the numbers, and then divide that sum by the number of items you added.  Since you know that the average is 8, and there are 4 items, just multiply those two numbers to get the...