All categories

2 years ago

On her first 5 tests, Francine scored 78%, 82%, 89%, 83% and 84%. What was her mean score?

Mathematics

2 answers:

laila [671]2 years ago

8 0

Answer:

83.2%

Step-by-step explanation: we know, mean = sum of data/ number of data

= 78+82+89+83+84

=416

now ,

416/5 = 83.2%

Leto [7]2 years ago

6 0

Answer:

83.2%

Step-by-step explanation:

Just add all the percentages together and divide it by the number of scores, which in this case is 5.

You might be interested in

Ms. Lee wrote a test with 15 multiple choice short answer questions. The multiple choice questions x are worth 5 points and the

hram777 [196]

x + y = 15 and 5x + 10y = 100 are the system of equations that represent this situation

Solution:

Let "x" be the number of multiple choice questions

Let "y" be the number of short answer questions

Worth of 1 multiple choice questions = 5 points

Worth of 1 short answer question = 10 points

Ms. Lee wrote a test with 15 multiple choice short answer questions

Therefore,

number of multiple choice questions + number of short answer questions = 15

x + y = 15 -------- eqn 1

The maximum number of points possible on the test is 100

Therefore, we frame a equation as:

number of multiple choice questions x Worth of 1 multiple choice questions + number of short answer questions x Worth of 1 short answer question = 100

$x \times 5 + y \times 10=100$

5x + 10y = 100 ------- eqn 2

Thus eqn 1 and eqn 2 are the system of equations that represent this situation

6 0

2 years ago

Johnny can read 10 pages of a book in 15 minutes.

Svetach [21]

Answer:

Its C

Step-by-step explanation:

Im really good with answers

5 0

3 years ago

Keiko received an $80 gift card for a coffee store. She used it in buying some coffee that cost $8.04 per pound. After buying th

Kryger [21]

Answer:

6 pounds of coffee.

Step-by-step explanation:

First, we determine how much money she spent. 80-31.76 = 48.24

Next, we divide the money spent by the price per unit. 48.24/8.04=6

Therefore, she bought 6 pounds of coffee.

3 0

2 years ago

Read 2 more answers

Thomas has 12 more marbles than twice the number of marbles Andrew has.

Thepotemich [5.8K]

Answer:

x + 2 + 12

Step-by-step explanation:

Thomas (t) = Andrew (x) * 2 + 12

3 0

2 years ago

A triangles inside angles all add up to how many degrees

Inessa [10]

Answer:

.?????¿¿????????????????

8 0

2 years ago

Read 2 more answers