Answer:
to convert a fraction to a decimal, divide the numerator by the denominator. If required, you can use a calculator to do this. This will give us our answer as a decimal.
9 students, 4 are selected and order doesn't matter:
Go to the 9th row of the triangle (mind you the first row is 0), the 2nd is 1st row
9th row: 1 9 36 84 126 126 84 36 9 1
Now choose the 4th column (excluding the 1st , you will get 126 :
so 126 is the number of combination requested:
PROOF: ⁹C₄ = 9!/(9-4)! .4! = (9!)/5!.4! = 126
Answer:
16 feet long
Step-by-step explanation:
If the tree's shadow length is 15 and you want to find the tree which is 30, you multiply by two and you have to multiply the 8 as well by two and you get 16.
Answer:
X= 7.1
Step-by-step explanation:
x+5.6+6.3+8.4=27.4
Step 1: Simplify both sides of the equation.
x+5.6+6.3+8.4=27.4
(x)+(5.6+6.3+8.4)=27.4(Combine Like Terms)
x+20.3=27.4
x+20.3=27.4
Step 2: Subtract 20.3 from both sides.
x+20.3−20.3=27.4−20.3
x=7.1
