Start with the parentheses first
4.6 -4.4+7.8 then calculate from left to right
= 0.2+7.8 = 8
You have to calculate how many combinations of 6 people can be chosen from 11. The formula for this is:
n! / [r! * (n-r)!]
combinations = 11! / [6! * 5!] =
11 * 10 * 9 * 8 * 7 / 5 * 4 * 3 * 2 *1 =
11 * 3 * 2 * 7 =
462 Combinations
Source:
http://www.1728.org/combinat.htm
Answer:
The answer is clearly 4 and 1. If we change the sign on 1 (making it -1), then you have the answer to your original question. 4 and -1 multiply to -4 and add up to 3.
Answer:



Step-by-step explanation:
The picture of the question in the attached figure
step 1
In the right triangle ABD
Applying the Pythagorean Theorem


----> equation A
step 2
In the right triangle BDC
Applying the Pythagorean Theorem


----> equation B
step 3
In the right triangle ABC
Applying the Pythagorean Theorem

----> equation C
step 4
Equate equation A and equation B

-----> equation D
step 5
substitute equation D in equation C

solve for z




simplify

Find the value of x



Find the value of y




