Answer:
57.5 feet
Step-by-step explanation:
The kitchen is a rectangle and she wants to buy 5 feet of wallpaper. And she buys 62.5 feet of wallpaper border. Just subtract 62.5 and 5 and you get 57.5 feet.
360 degrees. all the way around the circle is 360 degrees!
I think 23 bc if you set up the equ : 23*(6/6)=(9/9)T you solve and get 23 min
Answer:
x = y = 8
Step-by-step explanation:
We presume you want the values of x and y.
The angle not shown is also 45°, as the two acute angles are complementary. Then the triangle isosceles and x = y.
If you need to, you can use the Pythagorean theorem to find the value of x (and y).
(8√2)² = x² + x²
128 = 2x² . . . . simplify
64 = x² . . . . . . divide by 2
8 = x . . . . . . . . positive square root
The values of x and y are both 8.
_____
Hopefully, you will memorize the side ratios of an isosceles right triangle. They are ...
1 : 1 : √2
Multiplying these numbers by 8 gives ...
x : y : 8√2 = 8 : 8 : 8√2
In short, recognizing the factor of √2 in the number on the hypotenuse, you know immediately the values of x and y are both 8 in this 45°-45°-90° triangle.
Answer: length of DE = 18
Step-by-step explanation:
Since the angles of these two triangles are the same, we can assume that they are <em>similar triangles</em>. To solve for a missing side of a triangle that is similar, you can set up a proportion:
To solve for x (the missing length), you would do:
27 × 10 ÷ 15 = 18
You can set up the proportion in any way between the two triangles as long as the two sides correspond to each other. For example, you could have also used the following proportion to solve for x:
When you solve for x using this proportion, you would get the same value for x:
10 × 27 ÷ 15 = 18