Find the solution for the equation. 3 (n - 4) = -12​

Answer:

84%

Step-by-step explanation:

The empirical rule states that 68% values are within 1 standard deviation of mean, i.e,

70

±

15

or from 55 to 85. Since normal distribution is symmetric, we must have (32%) outside this range, and 32/2=16% on the right if this range. Hence below 85 we have (100-16) % = 84%

Answer:

Each student is given 25 pencils

Step-by-step explanation:

There are 25 students and 625 pencils. How many is each student gonna receive?

625 pencils ÷ 25 students = 25 pencils are given to each student

Answer:

Each student is given 25!

Step-by-step explanation:

Hope this helps!  ^w^

Answer:

80

Step-by-step explanation:

8 pints in a gallon so then you multiply 8 x 10 and get 80

Answer:

80

Step-by-step explanation:

I hope this helps!

Answer:

Jim is 36. Anna is 27.

Step-by-step explanation:

63 -9 = 54

54 ÷ 2 = 27

27 + 9 = 36

Anna's age is 39 years old while Jim's age is 63-year old based on the formation of the equation for their age.

Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.

Let's say Anna's age is A while Jim's age is J.

As per the given,

Anna is 9 years less than twice Jim's age.

A = 2J - 9

And,

Sum A + J = 63

By solving both equations,

63 - J = 2J - 9

63 + 9 = 3J

J = 24 years old.

A = 2(24) - 9 = 39 years old.

Hence "Anna's age is 39 years old while Jim's age is 63-year old based on the formation of the equation for their age".

For more about the equation,

https://brainly.com/question/10413253

#SPJ2

Answer:

Hope you understand my writing!

Answer:

The probability is    [tex]P(Z) = 0.0064 [/tex]

Step-by-step explanation:

From the question we are told that

  The number of members is  n = 15

Generally the number of ways of selecting two member from the fifteen members is mathematically represented as

       [tex]K  =  ^{n}C_2 *  2![/tex]

Here C stands for combination hence we will be making use of the combination functionality in our calculator

      [tex]K  =  ^{15}C_2 *  2 * 1 [/tex]

=>  [tex]K  =  78  *  2 * 1 [/tex]

=>  [tex]K  =  156  [/tex]

Gnerally the number of outcome that matches the outcome required by the committee(Which is  reselecting the member who where the chairman and vice chairman of the board ) is   m =  1

Generally the probability of randomly selecting the two members who currently hold the positions of chairman and vice chairman and assigning them to their current positions is mathematically represented as

      [tex]P(Z) =  \frac{m}{K}[/tex]

=>    [tex]P(Z) =  \frac{1}{156}[/tex]

=>    [tex]P(Z) =  \frac{1}{156}[/tex]      

 =>    [tex]P(Z) = 0.0064 [/tex]      

Answer:

0.0018

Step-by-step explanation:

P(z>2.88)=1-0.9980= 0.0018

The answer is 24, hopes this helps!

Answer:

The equation for a is [tex]a=-\frac{2000}{7}*(t-g)[/tex]

The altitute is 101,428.57 feet

Step-by-step explanation:

You know that the relationship between ground temperature and atmospheric  temperature can be described by the formula

t = -0.0035a +g

where:

Solving the equation for a:

-0.0035a +g=t

-0.0035a= t - g

[tex]a=\frac{t-g}{-0.0035}[/tex]

[tex]a=-\frac{2000}{7}*(t-g)[/tex]

The equation for a is [tex]a=-\frac{2000}{7}*(t-g)[/tex]

If the atmospheric temperature is -305 °F and the ground temperature is 50 °F, then t= -305 °F and g= 50 °F

Replacing in the equation for a you get:

[tex]a=-\frac{2000}{7}*(-305-50)[/tex]

[tex]a=-\frac{2000}{7}*(-355)[/tex]

a= 101,428.57

The altitute is 101,428.57 feet

Answer:

2

Step-by-step explanation:

If he uses 1 hour to practice harmonica, one our on homework, and another hour doing chores. He will be spending twice as much time practicing harmonica and doing homework than he would spend on chores.

Answer:

10 minutes more on working with his homework than his chores and harmonica OR 1/6 hour (or any other equivalent fraction).

Step-by-step explanation:

You can convert 1/4 into fifteen minutes. 15+15=30 minutes. Thus, he spends 30 minutes on his harmonica and doing chores.

You can convert 2/3 into 40 minutes.

40-30=10, so he spent 10 minutes more on working with his homework than his chores and harmonica.

Since you want it in fractions, you can find fractions that are equivalent to 10/60. One you can use is 1/6.

P.S. The Naruto reference is amazing xD

Answer:

It is answer C

Step-by-step explanation:

Answer:

The probability that, in any hour, less than 2 customers will arrive is 0.0067.

Step-by-step explanation:

The random variable X can be defined as the number of customers arriving hourly at the drive-through window at the Fidelity Credit Union.

The random variable X describes a finite number of occurrences of an event in a fixed time interval.

The random variable X follows a Poisson distribution with parameter λ = 7.1.

The probability mass function of X is:

[tex]P(X=x)=\frac{e^{-7.1}(7.1)^{x}}{x!};x=0,1,2,3...[/tex]

Compute the probability of less than 2 customers arriving as follows:

[tex]P(X<2)=P(X=0)+P(X=1)[/tex]

                [tex]=\frac{e^{-7.1}(7.1)^{0}}{0!}+\frac{e^{-7.1}(7.1)^{1}}{1!}\\\\=0.00083+0.00586\\\\=0.00669\\\\\approx 0.0067[/tex]

Thus, the probability that, in any hour, less than 2 customers will arrive is 0.0067.

Answer:

D

Step-by-step explanation:

Answer:

50°

Step-by-step explanation:

Angle NMP is an angle that has its vertex on a point along the circumference of the circle, thus, angle NMP is referred to as an inscribed angle of the circle.

The measure of an inscribed angle is equal to half of the measure of the arc it intercepts.

Therefore, the following equation shows the relationship between inscribed angle NMP and arc NP:

m<NMP = ½ × measure of arc NP

m<NMP = ½*100

m<NMP = 50°

Answer:

The null hypothesis                 [tex]H_o : \mu = 3.2 \ mg/dl[/tex]

The alternative hypothesis      [tex]H_a : \mu > 3.2 \ mg/dl[/tex]

Step-by-step explanation:

From the question we are told that

  The mean is  [tex]\mu = 3.2 \ mg/dl[/tex]

   The standard deviation is [tex]\sigma = 1.5 mg/dl[/tex]

   The sample size is  n = 25

    The sample mean is  [tex]\= x = 3.75 \ mg /dl[/tex]

Generally

   The null hypothesis is : That the mean of the  Arsenic blood concentrations in healthy individuals is [tex]\mu = 3.2 \ mg/dl[/tex]

i.e

The null hypothesis  [tex]H_o : \mu = 3.2 \ mg/dl[/tex]

    The alternative hypothesis is : That the mean of the  Arsenic blood concentrations in healthy individuals is greater than  [tex]\mu = 3.2 \ mg/dl[/tex]

The alternative hypothesis      [tex]H_a : \mu > 3.2 \ mg/dl[/tex]

Answer: 2.5 or 3

Step-by-step explanation:

Answer:

The sample size is  [tex]n  = 3457 [/tex]

Step-by-step explanation:

From the we are told that

  The population proportion is  p =  0.90

  The margin of error is  E =  0.01  

From the question we are told the confidence level is  95% , hence the level of significance is    

      [tex]\alpha = (100 - 95 ) \%[/tex]

=>   [tex]\alpha = 0.05[/tex]

Generally the sample size is mathematically represented as

       [tex]n =[ \frac{ Z_{\frac{\alpha }{2} } }{E} ]^2 * p(1-p)[/tex]

=>  [tex]n  =[  \frac{ 1.96  }{0.01} ]^2 * 0.90(1-0.90)[/tex]

=>   [tex]n  = 3457 [/tex]

Answer:

20

Step-by-step explanation:

18 plus 20 equals 38

20 is bigger than 18

Answer:

2.50

Step-by-step explanation:

2.50 is  2 1/2   vs 2 is only 2

Answer: 2.50

Hope This Helps!

Answer:

x intercept (-2,0) y intercept (0,2)

Step-by-step explanation:

Answer:

I'm pretty sure these are the answers

x-intercept (-2,0)

y-intercept (0,2)

Explanation:

x-intercept: Is coordinates where the line hits the x-axis

y-intercept: Is coordinates where the line hits the y-axis

This is not a question!!!!!!!!!

please delete this one

Answer:

D

Step-by-step explanation:

Answer:

i think its 85

Step-by-step explanation:

Answer:

9.9

Step-by-step explanation:

7^2+7^2= c^2

c= 9.9

Answer:

the correct answer is 10.9

Step-by-step explanation:

I got this answer right.

Answer:

4000 and 7000

Step-by-step explanation:

Answer:

got u homie

Step-by-step explanation:

Answer:

l +c _> 12

Step-by-step explanation:

Answer:

There's your answer!

Step-by-step explanation:

To do these just grab a calculator, or if you know your multiplication tables like I do, it's extremely easy, for example, when multiplying 60 and 80, you can do it in your head by just multiplying 6 and 8 to get 48, then add the two zeros on the end from 60 and 80, and you'll get 4800.

Complete question

The complete question is shown on the first uploaded image

Answer:

a

  [tex]y' = 0.85 [/tex]

b

 [tex]P(J) = 0.27  [/tex]

c

 [tex]P(R) = 0.0144 [/tex]

d

  [tex]P(R') =  0.7744 [/tex]

e

 [tex]P(Q) =0.2256 [/tex]

Step-by-step explanation:

From the question we are told that

   The proportion of M & M's that is  brown is  b =  0.12

   The proportion of M & M's that is  yellow  is  y =  0.15

    The proportion of M & M's that is  red  is  r =  0.12

    The proportion of M & M's that is  blue  is  b =  0.23

    The proportion of M & M's that is  orange  is  o =  0.23

    The proportion of M & M's that is  green  is  g =  0.15

Generally the probability that a random selected M&M is not yellow is  

         [tex]y' =  1-y[/tex]

=>      [tex]y' =  1-0.15[/tex]

=>      [tex]y' = 0.85 [/tex]

Generally the probability that a randomly selected peanut M&M isgreen or red is mathematically represented as

       [tex]P(J) =  g +  r [/tex]

=>    [tex]P(J) =  0.15 + 0.12 [/tex]

=>    [tex]P(J) = 0.27  [/tex]

Generally the  probability that two randomly selected peanut M&M’s are both red is mathematically represented as

      [tex]P(R) = r^2[/tex]

=>    [tex]P(R) = 0.12^2[/tex]

=>    [tex]P(R) = 0.0144 [/tex]

Generally if two  two peanut M&M’s are selected the probability that neither of them are red is mathematically represented as

     [tex]P(R') =  (1 -r)^2[/tex]

=>  [tex]P(R') =  (1 - 0.12)^2[/tex]

=>   [tex]P(R') =  0.7744 [/tex]

Generally if two  two peanut M&M’s are selected the probability that at least one of them is red is mathematically represented as

        [tex]P(Q) =  1- P(R')[/tex]

=>      [tex]P(Q) =  1- 0.7744 [/tex]

=>      [tex]P(Q) =0.2256 [/tex]

Answer:

15x125=1875 shirts

Step-by-step explanation:

Answer:

its 148 because alternate

Answer: 148.

Step-by-step explanation:

Both angles are perpendicular, whilst being the same length and being a straight line. Therefore, it would be 148.