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
mario62 [17]
2 years ago
7

Please help me with this probability question, I’ve got my maths exam tomorrow (13th June)

Mathematics
1 answer:
Evgen [1.6K]2 years ago
6 0

\dfrac{2}{n-1}=\dfrac{3}{n}-0.1\\2n=3(n-1)-0.1n(n-1)\\2n=3n-3-0.1n^2+0.1n\\0.1n^2-1.1n+3=0\\n^2-11n+30=0\\n^2-5n-6n+30=0\\n(n-5)-6(n-5)=0\\(n-6)(n-5)=0\\n=6 \vee n=5

You might be interested in
For the graph y = 1 find the slope of a line that is perpendicular to it and the slope of a line parallel to it. Explain your an
MakcuM [25]
 y = 1 is a horizontal line which has a slope of 0.
A line perpendicular to it, a vertical line, has an undefined slope. A line parallel to it, also a horizontal line, has a slope of 0.

Learn this, it helps..
HOY -- horizontal line, 0 slope, represented by y = a number
VUX -- vertical line, undefined slope, represented by x = a number.
8 0
3 years ago
How does the area below the mean compare to the area above the mean in a normal distribution?
IrinaK [193]

The area below the mean compares to the area above the mean in a normal distribution as the areas are always equal regardless of the mean. Option A This is further explained below.

<h3>What is a normal distribution?</h3>

Generally, The normal distribution, also known as the Gaussian distribution, is a kind of probability distribution that is symmetric around the mean. This means that it demonstrates that data that are closer to the mean are more likely to occur than data that are farther away from the mean. When represented graphically, the normal distribution takes the shape of a "bell curve."

In conclusion, In a normal distribution, the area below the mean is compared to the area above the mean since the areas are always equal regardless of the mean. This is true even if the mean is different.

Read more about normal distribution

brainly.com/question/15103234

#SPJ1

Complete Question

How does the area below the mean compare to the area above the mean in a normal distribution?

A. the areas are always equal regardless of the mean

B. the areas are sometimes equal depending upon the standard deviation of the distribution

C. the area above the mean is larger since the values are larger as you move above the mean

D. the areas are sometimes equal depending upon the value of the mean

5 0
2 years ago
Please answer right I will give you brainliest :)
Ulleksa [173]

Answer:

B: (1,15)

Step-by-step explanation:

The points on the graph increase by 1 for the x-coordinates, and 15 for the y-coordinates.

3 0
3 years ago
Read 2 more answers
This graph represents a transformation of the parent cube root function. Replace the values of h and k to create the equation of
Zigmanuir [339]

Answer: H is 5 and K is 2

Step-by-step explanation:

8 0
3 years ago
Find the slope of the line that goes through: (-1, -12) and (9, 68)
dimaraw [331]

Answer:

The slope of the line is 8.

Step-by-step explanation:

The points on the straight line are:

A = (-1, -12)

B = (9, 68)

Compute the slope of the line as follows:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

   =\frac{68-(-12)}{9-(-1)}\\\\=\frac{68+12}{9+1}\\\\=\frac{80}{10}\\\\=8

Thus, the slope of the line is 8.

8 0
3 years ago
Other questions:
  • Please solve. 5+ 1/7x= -2
    13·2 answers
  • X4+3x-28 plz solve the question it's urgent plz​
    7·1 answer
  • Marko is playing the video game Fort Attack
    15·1 answer
  • What does this look like in long division
    15·2 answers
  • What is the common ratio of the geometric sequence shown below <br> -2,4,-8,16
    8·1 answer
  • Simplify the expression 2\3(-4)-(1/6-8/6
    8·2 answers
  • Can some help please help me with diving these fractions. Thanks so much
    14·1 answer
  • Write 1/6 as a recurring decimal with working out
    7·2 answers
  • Solve the following 1-step equation for x
    14·1 answer
  • The machine that Holley operates tightens 40 bolts every 3 minutes. The bolts are delivered to her machine station in boxes cont
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!