The percent error is -2.1352% of Jocelyn's estimate. May I have Brainless
X^2 - x - 20
(x + 4)(x - 5) <==
x^2 - x - 20.....the last sign, which is negative, tells me that one set is positive and one set is negative. The first sign, which is also negative, tells me that the larger number will be negative. Now u have to find 2 numbers, that when added equal -1 and when multiplied, equal -20....those numbers are -5 and 4. so ur answer is : (x + 4)(x - 5)
All you have to do is find the square root of 441
the square root of 441 is 21
the formula for Area is LxW so 21x21=441
The length of one side 21 square feet
Hope this helped! :)
Answer:
The original number is (i)
The whole amount is (ii)
Step-by-step explanation:
So when finding a number in a percent you wanna see how much that percent will go into that number. So like if I said how many times does 60% go into 200 you would have to see how many times the number 200 would go into 60%. does this make sense? If so this is how you can find your answer.
Sorry if I'm wrong I hope you get this right!! Stay beautiful ❤️
The formula to find how many different ways are there to choose a subgroup of r things from a group of n things is
![\frac{n!}{(n-r)!}](https://tex.z-dn.net/?f=%5Cfrac%7Bn%21%7D%7B%28n-r%29%21%7D)
Here, you have 7 trophies and you want to choose 4 of them, so you have
![\frac{7!}{(7-4)!}\text{ = }\frac{5040}{6}=840](https://tex.z-dn.net/?f=%5Cfrac%7B7%21%7D%7B%287-4%29%21%7D%5Ctext%7B%20%3D%20%7D%5Cfrac%7B5040%7D%7B6%7D%3D840)
So there are 840 ways to choose your 4 trophies out of the 7 you have.