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3 years ago

Hello please help i’ll give brainliest

Mathematics

1 answer:

matrenka [14]3 years ago

5 0

Answer:

1.) 4 families with 3 children

2.) 6 families represented in the dot plot

3.) 3 families less than 4 children

Step-by-step explanation:

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Assume the readings on thermometers are normally distributed with a mean of 0degreesC and a standard deviation of 1.00degreesC.

faust18 [17]

Answer:

$P(-2.06$

And we can find this probability with this difference:

$P(-2.06$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the temperatures of a population, and for this case we know the distribution for X is given by:

$X \sim N(0,1)$

Where $\mu=0$ and $\sigma=1$

We are interested on this probability

$P(-2.06$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$P(-2.06$

And we can find this probability with this difference:

$P(-2.06$

8 0

4 years ago

Write y=1/6x+4<br> In standard Form using Integers?

nexus9112 [7]

<span>y=1/6x +4 is already in standard form, but the coefficient 1/6 is not an integer. An integer number is not a fraction number or rational number, so in order we have a standard form with integers coefficients only, multiply each member of the equation by 6. that is 6y =x +24, and 4y = x + 16 is the final answerHope this helps. Let me know if you need additional help!</span>

4 0

4 years ago

Read 2 more answers

Sistema de ecuaciones.5x+2y=-152x-2y=-6

Zolol [24]

Tnemos el sisema de ecuaciones:

$\begin{gathered} 5x+2y=-15 \\ 2x-2y=-6 \end{gathered}$

Podemos resolverlo por eliminación sumando ambas ecuaciones y eliminando y. Asi podemos resolver para x:

$\begin{gathered} (5x+2y)+(2x-2y)=(-15)+(-6) \\ 7x+0y=-21 \\ x=-\frac{21}{7} \\ x=-3 \end{gathered}$

Ahora podemos resolver para y con cualquiera de las dos ecuaciones:

$\begin{gathered} 2x-2y=-6 \\ 2\cdot(-3)-2y=-6 \\ -6-2y=-6 \\ -2y=-6+6 \\ -2y=0 \\ y=0 \end{gathered}$

Respuesta: x=-3, y=0

7 0

1 year ago

Assistance in understanding and solving this example on Elementary Number Theory with the details of the solution to better unde

Brut [27]

Answer:

x | y

==========

16 | 3

12 | 6

8 | 9

4 | 12

b) A large basket contains 23 eggs

Step-by-step explanation:

a) Isolating 3x, we get

3x = 60-4y

This means that 60-4y is a multiple of 3.

Besides, as x is a positive integer, then x = 60-4y has to be greater than zero

60-4y>0

Solving the inequality for y

60>4y

60/4 > y

15>y (or y<15, which is the same)

The multiples of 3 which are smaller than 15 are 3,6,9 and 12

Now we draw a table for these values of y and found the value of x by replacing in the equation 3x = 60-4y---> x = (60-4y)/3

x | y

=======

16 | 3

12 | 6

8 | 9

4 | 12

And these are all the solutions in positive integers.

b) This problem is pretty much like problem a)

Let's call x the number of eggs contained in the large baskets and y the number of eggs contained in the small baskets.

Then

Number of eggs bought - number of eggs sold = number of eggs left over.

In this case

11x-39y = 19

But we also know that 0<y<12 because the small baskets hols fewer than a dozen.

Isolating x in the equation 11x-39y + 19, we get

x=(19+39y)/11

Now we make a table with these values of x and y remembering that y is a positive integer smaller than 12

x | y

=======

5.2 | 1

8.8 | 2

12.4 | 3

15.9 | 4

19.5 | 5

23 | 6

26.6 | 7

30.1 | 8

33.6 | 9

37.2 |10

40.7 |11

From this table we see that the only integer solution for x is 23, so a large basket contains 23 eggs.

3 0

3 years ago

Pls help me on B asap

Zanzabum

Take the common denominator and divide by 3 then youll get 58

3 0

3 years ago