Lisa is currently taking physics as one of her electives in school. her grade at the end of the year is determined by the averag
1 answer:
The score which Lisa should get in her fourth exam of school to get exactly 80% in the course is 64.
<h3>What is the average of a group of numbers?</h3>The average of the group of numbers is the ratio of the sum of all the numbers of the group to the total number of the group.
Lisa is currently taking physics as one of her electives in school.
Her grade at the end of the year is determined by the average of four exams, each worth 100 points.
- On her first test, she got an 84,
- On her second, she got a 92,
- On her third, an 80.
She got exactly 80% in the course. Let she scores x marks in her fourth exam. Thus,
Hence, the score which Lisa should get in her fourth exam of school to get exactly 80% in the course is 64.
Learn more about the average here;
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Answer:
a; she will have $8812
b: It will be enough for her trip
Step-by-step explanation:
In this question, we are tasked with calculating how much a certain value in a savings account that is earning an interest that is compounded annually will be worth.
To calculate this, we use the compound interest formula;
A = P(
Where A is the amount after that number of years which of course we want to calculate
P is the principal amount which is the amount we are investing which is $6439 according to the question
r is the interest rate which is 4% = 4/100 = 0.04
t is the time which is 8 years
n is 1 which is the number of times interest will be compounded annually
We plug these values as follows;
A = 6439(1 + 0.04/1)^8
A = 6439(1.04)^8
A = $8,812.22
This amount is greater then the needed $8,500 for the trip and of course it will be enough
Answer:
i do only 1 part
hope my answer is helpful to you
