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
lutik1710 [3]
2 years ago
14

Arithmetic mean of marks (out of 25) scored by 10 students was 15. One of the student, named Karishma enquired the other 9 stude

nts and find the deviations from her marks are noted as −8,−6,−3,−1,0,2,3,4,6. Find Karishma's marks?​
Mathematics
1 answer:
erastova [34]2 years ago
3 0

Answer:

Krishna's marks x marks

so...

xˉ=15

xˉ=15n=10

xˉ=15n=10∑x=x+x−8+x−6+x−3+x−1+x+x+2+x+3+x+4+x+6=10x−3

15=10x-3/10

150+3=10x

x=150/10=15.3 marks

<em><u>Krishna scored 15.3 marks.</u></em>

<em><u>hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>helps</u></em><em><u> </u></em><em><u>you</u></em><em><u> </u></em><em><u>sis</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

You might be interested in
This is the call plan for Robert's cell phone:
butalik [34]
To answer this, first make an equation representing the data: 

15+ 0.20X= Bill

now plug in data you know:

15 + 0.20(30)= bill

and finally solve it: 
Bill= $21.00

4 0
3 years ago
Read 2 more answers
Simplify the expression: 5(–4 + 3g)
MaRussiya [10]

Answer:

-20 + 15g

Step-by-step explanation:

5 multiplied by -4 is -20

5 multiplied by 3g is 15 g.

because these two variables do not both have a g with them, this is the most they can be simplified. hope this helps!

4 0
3 years ago
Read 2 more answers
Select the function that's represented in the graph. Question 5 options: A) ƒ(x) = x2 – 3 B) ƒ(x) = –1∕2x2 – 3 C) ƒ(x) = –x2 – 3
Neporo4naja [7]

Answer:

a)

Step-by-step explanation:

hello,

because of the end behaviour the constant in  x^2 should be positive so we have a) or d)

f(0)=-3 in both cases

for A) f(x)=

x^2-3=(x-\sqrt{3})(x+\sqrt{3})

so f(x)=0 for x=\sqrt{3} \ or \  x = -\sqrt{3}

so the correct answer is A)

hope this helps

3 0
2 years ago
If you have a savings account, contact your bank and find out the interest rate on that account. (If you don’t have your own acc
Nina [5.8K]

Deposit $625 into a money market account with a 5% rate for 1 year would result in more money.

<h3>The interest rate of the bank</h3>

To do this, we make use of 1.50% interest rate

<h3>The exponential growth equation</h3>

Here, we have:

Initial, a= 625

Rate, r = 1.5%

The exponential growth equation is

A(t) = a * (1 + r)^t

So, we have:

A(t) = 625 * (1 + 1.5%)^t

Evaluate

A(t) = 625 * 1.015^t

Hence, the exponential growth equation is A(t) = 625 * 1.015^t

<h3>The value in 25 years</h3>

Here, t = 25.

So, we have:

A(25) = 625 * 1.015^25

Evaluate

A(25) = 906.84

Hence, the value in 25 years is $906.84

<h3>The investment with more money</h3>

<u>#Investment A</u>

a = 625

r = 1.5%

t = 5

So, we have:

A(5) = 625 * 1.015^5

Evaluate

A(5) = 673.3

<u>#Investment B</u>

a = 625

r = 5%

t = 1

So, we have:

A(1) = 625 * 1.5^1

Evaluate

A(1) = 937.5

By comparison, 937.5 is greater than 673.3

Hence, deposit $625 into a money market account with a 5% rate for 1 year would result in more money.

Read more about exponential growth equation at:

brainly.com/question/23729449

#SPJ1

3 0
2 years ago
Which is equivalent to the following expression? (2x^2+4xy-y^2)+(x^2+3xy-y^2)
Karo-lina-s [1.5K]

Answer C : 3x^2+7xy-2y^2

equivalent to the following expression

(2x^2+4xy-y^2)+(x^2+3xy-y^2)

2x^2+4xy-y^2+x^2+3xy-y^2

Combine like terms

2x^2+x^2+4xy+3xy-y^2-y^2

2x^2 + x^2 is 3x^2

4xy+3xy is 7xy

-y^2-y^2 is -2y^2

So expression becomes

3x^2+7xy-2y^2

Answer  C is correct

3 0
3 years ago
Read 2 more answers
Other questions:
  • What are the integer solutions of the inequality |x| &lt; 3? A. 0, 1, 2, and 3 B. 0, 1, and 2 C. –2, –1, 0, 1, and 2 D. –3, –2,
    10·1 answer
  • Write 30/100 as a money amount and as a decimal in terms of a dollar
    15·2 answers
  • 9/4 is between what two numbers
    6·1 answer
  • Which of the following is a one-to-one function?
    15·1 answer
  • Which one weighs more a pound of bricks or a pound of cotton balls?
    12·2 answers
  • Solve.<br><br> j – (–14) = –20<br> a. -34<br> b.34<br> c.6<br> d.-6<br> Which one?
    6·2 answers
  • Cuanto es la raiz cuadrada 7 x 4 cuando usas la ecuacion de 168?
    11·1 answer
  • The radius of a circle is 3 yards. What is the circle's area? Use 3.14 for ​.
    6·1 answer
  • SSC's Tuatara is the fastest car in the world with 331 miles per hour
    9·1 answer
  • Which of the following steps could be used as a shortcut method to multiply 12 by 50
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!