Answer: For Ryan to get an average of exactly 91, she needs to get a 90 on her fifth quiz.
Step-by-step explanation:
You can find the average of a set of numbers by adding them together and dividing the sum by the amount of numbers added.
Ryan has five total quizzes. Only four of them are known, so we can represent her fifth quiz as X.
, dividing the five quizzes' sum by 5
She wants the average to be exactly 91, so you can set the expression equal to 91 and solve:
For Ryan to get an average of exactly 91, she needs to get a 90 on her fifth quiz.
Answer:
- 14
Step-by-step explanation:
4x + 6 = - 62
4x = - 62 + 6
4x = - 56
x = - 56 / 4
x = - 14
Answer:
PV = 1414.213562
Step-by-step explanation:
Find:
PV = 8,000*V^(t+3)
Solution:
- Split the the exponent of V into t and 3:
PV = 8,000*V^t*V^3
- We will calculate the V^t and V^3 from information given.
- The present value of 10,000 at the end of 6 years and immediate value of $5,000. De-crypt this statement we have:
10,000*V^6 = 5,000
V^6 = 5,000/10,000
V^6 = 0.5
V^3 = sqrt(0.5)
- Using 2 and 3, De-crypt:
6000*V^t + 56,000*V^2t = 5000
Solving the quadratic in V^t:
V^t = 0.25
- Hence, we have the present value as:
PV = 8,000*V^t*V^3
PV = 8,000*sqrt(0.5)*0.25
PV = 1414.213562
John has 135 baseball cards he gives his friend 64 how many does he have left?
It does have a solution the answer is 71
Tell him to avoid this very common error where the student simply takes' the difference of the two digits in each column, irrespective of which is the larger. Doing this produces an error in which the student ought to borrow, but does not
