Here, in order to find the solutions to the quadratic equation - x² + x - 30 = 0, we will use factorization method.
In the method, we will split 30, in such factors, which when added or subtracted gives us 1, and when multiplied gives us -30.
So, we will use, -5 and 6. When they are added they will give us 1 and when multiplied they will give us -30 as answer.
Now, the equation will be written as -
x² - 5x + 6x - 30 = 0
Taking common, we get
x(x - 5) +6(x-5) = 0
(x-5)(x+6) = 0
So, x - 5 = 0 and x +6 = 0, we will get, x = 5 and x = - 6
<u>Thus, the correct option is C). x = 5 and -6</u>
Permutation problems are for lists where order matters where as combinations are for groups where order does not matter
Step-by-step explanation:
See permutation as the number of arrangements or orderings that can be identified from a fixed group.Here every detail about the group is important.
For example you have five teachers and you want to determine how many ways they can sit in five chairs. You notice that the number in this group is fixed, 5, and you want to know the number of ways you can arrange the teachers in five chairs.
Combination will come in when you want to determine the number of groups you can form from a given large number of individuals.
For example, there are seven pilots who are trying out to be part of a three-person in space flight team.How many different flight teams can be formed?..Here the word choose has been used to mean selecting from a group.The order of picking the three pilots from the 7 pilots does not matter. You have certain number of persons and you want to know how many arrangements are present for all of them.
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Permutations and Combinations : brainly.com/question/3374511
Keyword : counting, permutation, combination
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Answer:
7/8
Step-by-step explanation:
87.5% is equal to 875/1000
by dividing by 5 a couple times
175/200
35/40
7/8
Answer:
Step-by-step explanation:
Assume a pentagon has equal length where a be the side of the pentagon and r be the apothem of the pentagon.
Given:
Sides of pentagon 
apothem of pentagon 
The area of the pentagon formula is given below.
Where b = length of the base or side
And h = height of apothem
Now, we substitute side and apothem length in above formula.
Therefore, the area of the pentagon is 
