1answer.
Ask question
Login Signup
Ask question
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
olga nikolaevna [1]
3 years ago
13

Find n so that mean of the data set is 140. (120, 145, 130, 80, 95, 100, 340, n)

Mathematics
2 answers:
Delvig [45]3 years ago
8 0

Answer:

<u>Answer</u><u>:</u><u> </u><u>n</u><u> </u><u>is</u><u> </u><u>1</u><u>1</u><u>0</u>

Step-by-step explanation:

Formular:

mean =  \frac{ \sum(n_{1}, \: n _{2}, \: ...n_{n}  ) }{n}  \\

therefore:

140 =  \frac{(120 + 145 + 130 + 80 + 95 + 100 + 340 + n)}{8}  \\  \\ (8 \times 140) = 1010 + n \\  1010 + n = 1120 \\ n = 1120 - 1010 \\ n = 110

Varvara68 [4.7K]3 years ago
5 0

Answer:

we know that mean of the data set is

Sum of all terms / total no. of terms

mean = 120+145+130+80+95+100+340+n / 8

140 = 1010+n / 8

140*8 = 1010 + n

1120 = 1010 + n

1120 - 1010 = n

110 = n

therefore the value of n should be 110

hope it's helpful

You might be interested in
Write an algebraic expression for the word expression. the quotient of 10 times m and 7
Makovka662 [10]

Answer:

10m/7

Step-by-step explanation:

quotient means division so 10 times m is 10m

and then we will divide 10m and 7

10m/7

please mark as brainliest

8 0
3 years ago
If 7 litres of petrol cost $14.70 ,calculate the cost of 15 litres of petrol<br><br> Kindly answer
erastovalidia [21]

Answer:

The cost of 15 liters is $31.50

Step-by-step explanation:

1. Find the price for 1 liter of petrol.

Divide the cost by the number of liters:

$14.70 / 7 = $2.10 per liter.

2. Multiply the price for 1 liter by the new number of liters, 15.

$2.10 per liter x 15 liters = $31.50

3 0
3 years ago
Write the limit definition of a function of x
ollegr [7]

Answer:

 the limit of a function is a fundamental concept in calculus and analysis concerning the behavior of that function near a particular input.

Step-by-step explanation:

7 0
3 years ago
I NEED TO GET THIS DONE BEFORE THE 8TH <br> I forgot how to do this can I get some help.
-Dominant- [34]

Answer:

Step-by-step explanation:

they want to know the high and low quiz scores... that's all

6 0
3 years ago
Can you guys help me with this?
Ghella [55]
F(x)=2x^2-x-6
Factoring:
f(x)=2(2x^2-x-6)/2=(2^2x^2-2x-12)/2=[(2x)^2-(2x)-12]/2
f(x)=(2x-4)(2x+3)/2=(2x/2-4/2)(2x+3)→f(x)=(x-2)(2x+3)

g(x)=x^2-4
Factoring
g(x)=[sqrt(x^2)-sqrt(4)][sqrt(x^2)+sqrt(4)]
g(x)=(x-2)(x+2)

f(x)/g(x)=[(x-2)(2x+3)] / [(x-2)(x+2)
Simplifying:
f(x)/g(x)=(2x+3)/(x+2)

Answer: Third Option (2x+3)/(x+2)
7 0
4 years ago
Other questions:
  • I need an answer ASAP!
    15·1 answer
  • What is the perimeter 5 3/4 and 2 1/3
    8·1 answer
  • She has saved $30 which is three fifths of the total cost, how much is the total cost
    10·1 answer
  • Find the value of the determinant.<br> 4 8 10<br> 4 0-1<br> 3 - 2 4
    13·1 answer
  • What is the probability that a randomly selected number from 30 to 61 is divisible by 7 and then divisible by 20 after replacing
    8·1 answer
  • Using distributive property what is the value of the expression for 2(-5 + 3)
    11·1 answer
  • Which graph shows a proportional relationship between the number of hours of renting a snowboard and the total amount spent to r
    15·1 answer
  • A new field has a perimeter of 220 m and a width of 62 m. A bag of canola seed will cover 185 m2 of ground. How many bags of can
    5·1 answer
  • What is the solution of the system? {4x-y=-38 x+y=3
    10·1 answer
  • A chemical equation contains 4 hydrogen atoms and 2 oxygen atoms in the reactants. How many hydrogen and oxygen atoms should be
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!