The number of triangles formed by connecting one of the vertices to the rest of the vertices is equal to n - 2. The answer is the first choice. As you may observed, for the quadrilateral, we can form 2 triangles. For pentagon, we may form 3 triangles.
The solution would be like this for this specific problem:
12! = 12 * 11 * 10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1
= 479,001,600
<span>So
there are 479,001,600 <span>different group of students that can show up
for a seminar with an enrollment of 12.</span></span>
So the first thing we need to do is set up an equation (using x to represent the number). Then, we'll solve it to get the answer.
Step 1: Translate the word problem into an equation
Word problem: The sum of nine and six-tenths and a number is thirteen and two-tenths.
Equation: + x =
Step 2: Isolate x by subtracting from each side
+ x - = -
Step 3: The numbers on the left cancel out, leaving x alone
x =
Step 4: Convert the answer to decimals
x = 3.6
0.1/0.5 is the same as 1/5
1/5 = X/10
we times both sides by 10 to get x on its own
1/5 x 10 = 10/5 = 2 ( which equals X/10 x 10)
X/10 x 10 = X
2 = X
Answer:
900 grams of flour 150x6=900
3 eggs 450/150=3