1answer.
Меню
Ask question
Login
Signup
Ask question
Menu
All categories
English
Mathematics
Social Studies
Business
History
Health
Geography
Biology
Physics
Chemistry
Computers and Technology
Arts
World Languages
Spanish
French
German
Advanced Placement (AP)
SAT
Medicine
Law
Engineering
Aleks
[24]
3 years ago
10
Niki scored a 78 on her first test and an 85 on her second. Niki forgot what she got on her third test bit she knows that her av
erage is an 85. What did she score on her third test? Write and sole an equation for this problem.
Mathematics
Answer
Comment
Send
1
answer:
gregori
[183]
3 years ago
5
0
An average is written by the values / the amount of values.
We know there are 3 values, we know the numbers of 2, this can be modelled by the equation:
(78 + 85 + x)/3 = 85
We solve that ^:
(163+x)/3=85
163+x=255
x=92
The score on her 3rd test is 92
Send
You might be interested in
What is the total amount and the amount of interest earned on $6,500 at 6% for 25 years?
Deffense [45]
Here's the equation for one year:
0.06(6500) + 6500
But because it is 25 years:
25(0.06(6500)) + 6500
1.5(6500) + 6500
We can make it simpler:
2.5(6500)
The total amount is $16350
3
0
2 years ago
10 x (150-3)=(10x150) ( _x3)
Vitek1552 [10]
I'm not sure if it's 10x or 10 times a number
5
0
3 years ago
Read 2 more answers
Calculate the size of angle AEF
jenyasd209 [6]
Answer:
Accuate Angel 230 digre
4
0
2 years ago
Read 2 more answers
a business employs 100 workers at the start of the year, but then some employees quit or are fired. After that the business has
BartSMP [9]
52 workers or employees?
Your question is?
5
0
3 years ago
Read 2 more answers
What is the area of the rectangle? rectangle on a coordinate plane. rectangle has vertices at begin ordered pair 1 comma 3 end o
Maslowich
How would you explain this question in your head then try to solve your way. I hope this helps you with the question.
6
0
3 years ago
Other questions:
superstore and cheap store are two supermarkets that sell boxes of the same type of cereal each supermarket has a special offer
11
·
1 answer
Each population member has a known chance of being included when a probability sampling procedure is used. true or false
11
·
1 answer
PLEASE HELP I GIVE THANKS
6
·
1 answer
I need this question
10
·
2 answers
Write 0.8 as a percentage
15
·
1 answer
I really need this answer to be right if anyone can help it would be great!!!
9
·
2 answers
Someone please help me
14
·
1 answer
Find the common ratio for the following sequence .1, .01, .001
5
·
1 answer
Unos tambores, con una etiqueta de 30 L, son llenados con una solución proveniente de una tina grande. Se agrega una cantidad al
15
·
1 answer
I need help with this math problem
6
·
2 answers
×
Add answer
Send
×
Login
E-mail
Password
Remember me
Login
Not registered?
Fast signup
×
Signup
Your nickname
E-mail
Password
Signup
close
Login
Signup
Ask question!