Answer:
p = 8
Step-by-step explanation:
The n th term of an AP is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Given a₉ = 4 + 5p and d = 5, then
a₁ + 8d = 4 + 5p, that is
a₁ + 8(5) = 4 + 5p
a₁ + 40 = 4 + 5p ( subtract 40 from both sides )
a₁ = 5p - 36
a₂ = 5p - 36 + 5 = 5p - 31
a₃ = 5p - 31 + 5 = 5p - 26
a₄ = 5p - 26 + 5 = 5p - 21
Given that the sum of the first 4 terms = 7p - 10, then
5p - 36 + 5p - 31 + 5p - 26 + 5p - 21 = 7p - 10, that is
20p - 114 = 7p - 10 ( subtract 7p from both sides )
13p - 114 = - 10 ( add 114 to both sides )
13p = 104 ( divide both sides by 13 )
p = 8
First we need to find 75% of $450, so 450x.75=337.5
to find the markup we have to add 450+337.5 to get $787.5.
Answer:
Probability to solve 7 problem will be equal to 
Step-by-step explanation:
It is given total number of question = 10
She can solve 8 of them from 10 questions
We have to find the probability that she can solve 7 question
Probability will be equal to ratio of favorable outcome to total sample space
Favorable outcome will be equal to 
Total sample space 
So probability will be equal to 
So probability to solve 7 problem will be equal to
Answer:
x^2 - 10x + 25
Step-by-step explanation:
(x - 5)^2
(x - 5)(x - 5)
x^2 - 5x - 5x +25
x^2 - 10x + 25
Hope this helps!
56/25 = 2.24
32.05/15= 2.13666..
If you're looking for a larger value 56/25 is your answer.
