Help and show explanation please

Answer:

Hope the picture will help you...............

Answer:

b

Step-by-step explanation:

Because i know

The probability that they have a mean salary between $40,000 and $50,000 is 0.01.

A z-test is a statistical test to determine whether two population means are different when the variances are known and the sample size is large.

The z-score for 40,000 is

= (40,000 - 66000) / (14,000 / √4)

= -26000/7000

= -3.714, P- value is 0.000102

The z-score for 50,000

= (50,000 - 66,000) / (14,000 / √4)

=-2.285, P- value is 0.0111564

P(40,000 < x < 50,000) = P(  -3.714< z < -2.285)

So,

= P(50,000)-P(40,000)

= 0.0111564-0.000102

=0.011

Hence, the probability that they have a mean salary between $40,000 and $50,000 is 0.01.

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Answer:

1.) A

2.) D

3.) A

Step-by-step explanation:

Answer:

  a)  £10.50

  b)  £5.40

Step-by-step explanation:

In this context, "of" means "times".

__

  1/4 × £42 = £(42/4) = £10.50

__

  2/5 × £13.50 = £(2·13.50/5) = £(27/5) = £5.40

_____

Additional comment

The symbol "£" is a currency symbol identifying the units of the associated number. For algebraic purposes, any symbol representing units can be treated as though it were a variable.

In this question of means multiplication.

Let us start solve this question

Question 1

[tex] \small\rm{ \dfrac{1}{4} \: of \: £ \: 42}[/tex]

First we will convert whole number into a fraction

(Any number can be converted to fraction if you use 1 as the denominator)

[tex] \small\sf{ \dfrac{1}{4} \: \times \: \dfrac{42}{1}}[/tex]

Now we will multiply the numerators and denominators.

[tex] \small\sf{ \dfrac{42}{4} = £10.50 } [/tex]

Question 2

[tex] \small\rm{\dfrac{2}{5} \: of \: £ \: 13.50}[/tex]

First we will convert whole number into a fraction

[tex] \small\sf{ \dfrac{2}{5} \times \dfrac{13.50}{1} } [/tex]

Now we will multiply the numerators and denominators.

[tex] \small\sf{ \dfrac{27}{5} =£ 5.40 } [/tex]

A and B are Similar

B and C are not Similar

A and C are not Similar

--

Square A and B use numbers in the tens whilst square C used 72 not tens and because A and B you add 20 to both sides and then they are equal.

Answer:

1/4

Step-by-step explanation:

If total ride is 48 minutes, then she should have covered 1/4 the distance in 12 minutes cuz in 24 minutes she would cover 1/2 and in 36 minutes should would cover 3/4 and in 48 minute should cover the ride 1.

The polynomial that represent twice the sum of [tex]-5x^{2}[/tex] - x +6 and 7[tex]x^{2}[/tex] + x -1 is : 4[tex]x^{2}[/tex]+10

A polynomial is any  algebraic expression that has the least value of the power of  its variable as 2.

When the highest value of the polynomial is 2, it is a called a quadratic expression.

Analysis:

2( -5[tex]x^{2}[/tex] -x +6 + 7[tex]x^{2}[/tex] +x -1)

2( 2[tex]x^{2}[/tex] + 5) =

4[tex]x^{2}[/tex] + 10

In conclusion, the polynomial that represents the above  expressions is 4[tex]x^{2}[/tex] + 10

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Step-by-step explanation:

Given the five summary of a data set:

45 - min

52 - Q1

56 - Median

61 - Q3

69- Max

Thus, any number less than Q1-(1.5×IQR)

, or any number that is greater than

Q3+ (1.5 × IQR) would be considered an outlier.

The IQR of the data set = Q3 - Q1 = 61-

52 = 9

Thus,

Q1- (1.5 × IQR) =52- (1.5* 9) = 52 - 13.5=38.5

Therefore, an observation is considered

an outlier if it is below: 38.5

Q3 + (1.5 * 1QR) = 61 + (1.5 * 9) =61+13.5 =74.5

Therefore, an observation is considered

an outlier if it is above: 74.5

Answer:

B. 672

Step-by-step explanation:

First, Add. 35 + 49 = 84

Multiply. 84(minutes) x 8(days)

= 672

Bonus! ^^ 672 minutes = 11.2 hours

Answer:

It will take 4 hours for the two vehicles to meet

Step-by-step explanation:

Answer:

Step-by-step explanation:

what is the mean of 10,16,14,12and 16?

Find the sum of the values by adding them all up.

Divide the sum by the number of values in the data set.

10 + 16 + 14 + 12 + 16 = 68

68 : 5 = 13.6

or

(10 + 16 + 14 + 12 + 16) : 5 = 13.6

Based on the treasure map, a person standing at the cup cakes table must walk in the North direction to find the swings​.

A compass simply refers to a scientific instrument that is made up of a magnetized pointer (needle), which is typically used to show and find the following four (4) main cardinal directions on a map:

Based on the treasure map in the image attached below, a person standing at the cup cakes table must walk in the North direction to find the swings​.

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You should break down complex skills into component parts when learning  a complex performance or movement pattern.

Complex skills could be made up of several components. This makes it difficult to engage in these kind of activities without first undergoing extensive training.

As a result, you should break down complex skills into component elements when learning  a complex performance or movement pattern.

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Answer:

5 per comic book and 12 per computer game hope this helps.

Answer:

Step-by-step explanation:

8x + 3y = 76

x  + 3y = 41

8x + 3y = 76

-x - 3y = -41

7x = 35

x = $5 comic book

3y + 5 = 41

3y = 36

y = $12 computer game

The probability that the Yankees will lose when they score fewer than 5 runs is 17.16%.

Given that this season, the probability that the Yankees will win a game is 0.61 and the probability that the Yankees will score 5 or more runs in a game is 0.56, and the probability that the Yankees win and score 5 or more runs is 0.44, to determine what is the probability that the Yankees will lose when they score fewer than 5 runs the following calculation must be made:

Therefore, the probability that the Yankees will lose when they score fewer than 5 runs is 17.16%.

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Answer: The probability that the Yankees will lose when they score fewer than 5 runs is 17.16%

Step-by-step explanation:

Answer:

Total surface area : 733

The shape of the base is a rectangle with sides 11 in. and 12 in.

Step-by-step explanation:

The shape of the base is a rectangle with sides 11 in. and 12 in.

The surface area is the sum of the areas of the 5 sides.

Area of the base = 11*12 = 132

Area of the two triangles =  (11*16)/2 = 88

Area of the back rectangle = 192

The theorem of Pitagora to find the oblique side: square root of (11*11 + 16*16)= 19.42 in.

So the area of the oblique face: 19.42* 12 = 233 (almost :) )

So total surface area: 132 + 88*2+192+233= 733 square in

Hey there!

(6 + 3.14 + 7 + 7^6)

= 6 + 3.14 + 7 + 7^6

= 9.14 + 7 + 7^6

= 16.14 + 7 * 7 * 7 * 7 * 7 * 7

= 16.14 + 49 * 49 * 49

= 16.14 + 2,401 * 49

= 16.14 + 117,649

= 117,665.14

Therefore, the answer should be:

117,665.14

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

The equivalent expression is -1

Answer:

X=4

Step-by-step explanation:

The solution is in the file

Answer:

1.  8

2.  24

Step-by-step explanation:

The number of persons that drink grape milk only :

18 - 10 = 8

The number of persons that drink coffee :

42 - 8 = 34

The number of persons that drink coffee only :

34 - 10 = 24

Answer:

Step-by-step explanation:

Using formula y=kxz

so,

24=k*4*3

k=2

so if we put x=12 and z=4,

y=2*12*4

y=48

Answer:

x=12

Step-by-step explanation:

Every triangle has interior degrees that all together add up to 180. We already know we have 50 degrees and 75 degrees, so we can subtract that to see how much we have left to work with. If we do that, we get 55 degrees left. Now, we have to set up a two step equation to find x:

5x-5=55

The first thing to do is to add 5 to both sides to get rid of -5:

5x-5=55

   +5  +5

    __ __

     0   60

So now, it's 5x=60

Now, we have to isolate x. To do this, we have to divide both sides by 5. If you do this, you get:

x=12

Hope this helped!

Answer: b) x = 12

Step-by-step explanation:

   The sum of a triangle's angles add up to 180°. We will add together all the angles, set them equal to 180°, and then solve.

Given:

(50°) + (75°) + (5x - 5°) = 180°

Combine similar terms:

120° + 5x = 180°

Subtract 120° from both sides of the equation:

5x = 60°

Divide both sides of the equation by 5:

x = 12

       Your answer is;

           b) x = 12

Answer:

49/9

Step-by-step explanation:

[tex](3/7)^-2=((37)^2)^-1=(3^2/7^22)^-1=(9/49)^-1=49/9[/tex]

I hope this helps!

Answer: 1560

Step-by-step explanation:

15 x 13 = 195 and 195 x 8 = 1560