A data set has a mean of 42 and a standard deviation of 7.8 if an element in the set is 54 find its z-score

Answers

Answer 1

Answer:

mean=42

SD=7.8

X=54

Z=(X-u)/SD

Z=(54-42)/7.8=12/7.8

=1.54


Related Questions

5 Gross Pay is $432. Finat a the social security tax, b the medicare tax and c the
total deductions

Answers

Answer:

Hope this helps!

Step-by-step explanation:

Expand the single bracket
12(b +3)

Answers

Answer:

12b + 36

Step-by-step explanation:

multiply the outside of the bracket by the inside

12(b + 3)

12b + 36

Which expression is equivalent to 4x4x4x4x4

Answers

Answer:

Step-by-step explanation:

4x4x4x4x4=4^5=1024

The equation p=6s  represents the perimeter p of a regular hexagon with sides length 2cm
What is the perimeter of a regular hexagon with side length 2cm

Answers

Answer:

p= 12cm

Step-by-step explanation:

Find the slope of the line

Answers

Answer:

1/2 is the slope

Step-by-step explanation:

By using the graph provided, you can count the lines and go up 1 and over 2. Hope this helped!

PLS help 20 min
Which of the following correctly uses absolute value to show the distance between -80 and 15? (5 points) a |-80 - 15| = |-95| = -95 units b |-80 + 15| = |-65| = 65 units c |-80 - 15| = |-95| = 95 units d |-80 + 15| = |-65| = -65 units

Answers

Answer:

It's B, |-80+15|= 65

Step-by-step explanation:

What is the answer to this?

Answers

[tex]\huge\bold\purple{2/3:}[/tex]

In Randy's town all stand alone store front signs must be exactly 8 feet high. When mounted atop a pole , the combined height of the sign and pole must be less than 20 feet or greater than 35 feet so that they dont interfere with the power and phone lines. Write a compound Inequality to represent the possible above ground height of the pole.

Answers

Answer:

[tex]x<12[/tex] or [tex]x > 27[/tex]

Step-by-step explanation:

Given

[tex]Lower\ Bound = 20[/tex]

[tex]Upper\ Bound = 35[/tex]

[tex]Height = 8[/tex]

Required

Represent as a compound inequality

Let the pole height be x:

So, the combine height of the pole and the sign is [tex]x + 8[/tex]

The height must be less than 20ft.

So, we have:

[tex]x + 8 < 20[/tex]

Subtract 8 from both sides

[tex]x + 8 - 8 < 20 - 8[/tex]

[tex]x < 20 - 8[/tex]

[tex]x<12[/tex]

or The height must be less than35ft

So, we have:

[tex]x + 8 > 35[/tex]

Subtract 8 from both sides

[tex]x + 8 - 8 > 35 - 8[/tex]

[tex]x > 35 - 8[/tex]

[tex]x > 27[/tex]

So, the compound inequality is:

[tex]x<12[/tex] or [tex]x > 27[/tex]

Select the correct answer.
Which equation is equivalent to the given equation?
-4(x-5)+8x=9x-3

Answers

Answer:

b, its the logical answer

Step-by-step explanation:

The value of the expression -4(x-5)+8x=9x-3 will be -5x = -23 The correct option is D.

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given expression is -4(x-5)+8x=9x-3. The solution to the expression is given below:-

-4(x-5)+8x=9x-3

-4x + 20 + 8x= 9x - 3

4x - 9x = -20 - 3

-5x = -23

Therefore, the value of the expression -4(x-5)+8x=9x-3 will be -5x = -23 The correct option is D.

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Please help meh please

Answers

Step-by-step explanation:

Movie pricing per person is $7.75

hockey pricing per person is $7.90

The Movie pricing is less per person because 7.90<7.75

I hope it answers

Answer:

movies

Step-by-step explanation:

im adding a picture of the explination because i worked it out

Which expressions are equivalent to 16? Select each correct expression

1 to the 16th power
2 to the 4th power
4 to the 2nd power
8 to the 2nd power
16 to the power of 0
16 to the power of 1

Answers

Answer: Choose 2 to the 4th power, 4 to the 2nd power, and 16 to the power of 1

Step-by-step explanation:

When working with exponents, whatever number is the corner of another number, multiply it by itself. For instance, if you have 2 to the 4th power, multiply 2x2x2x2 which is 16. Also there is 4 to the 2nd power which is 4x4 which is also 16. Lastly you have 16 to the power of 1 and anything multiplied by 1 stays the same.

Correct choices are 2 to the 4th power, 4 to the 2nd power, and 16 to the power of 1.

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

When working with exponents, whatever number is the corner of another number, multiply it by itself.

For instance, if you have 2 to the 4th power, multiply 2x2x2x2 which is 16. Also, there is 4 to the 2nd power which is 4x4 which is also 16. Lastly, you have 16 to the power of 1 and anything multiplied by 1 stays the same.

Therefore, the correct choices are 2 to the 4th power, 4 to the 2nd power, and 16 to the power of 1.

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hurry ASAP 100 points !!!!

Answers

Answer:

I am pretty sure 1=constant independednt, 2 is inconsistent and three is constant dependent

Step-by-step explanation:

I am not positive tho..

Answer:

the first one is y=-5+2x

Can someone help me please, thank you to everyone who does!

Answers

Answer:kk

Step-by-step explanation:

please help asap no trolls!!

Answers

Answer:

def?

Step-by-step explanation:

Answer:

D, E, F

Step-by-step explanation:

I have ixl too!

Hope this helps.

The amount a tutor is compensated for one-hour individual or group
tutoring sessions is shown in the table. The relationship between
compensation and number of sessions is linear.
Sessions
1
2
3
4
5
39.50
69.00
98.50
128.00 157.50
Group ($)
Individual ($)
29.50
49.00
68.50
88.00
107.50
a. Find the rate of change and the initial value for the group sessions.
b. Find the rate of change and the initial value for individual sessions.
c. Compare and contrast the rates of change and initial value.

Answers

Answer:

Step-by-step explanation:

the slope is 29.5, so it is 29.5$ per hour for group

39.5-29.5 = 10$ for initial for group

49-29.5 = 19.5 perhour for individual

29.5-19.5 = 10$ for initial for indiivudla

same initial but different rates

10p - 3p-2/4+5 when p = 10

*I'm in 5th grade pls help*​

Answers

Answer:

10(10)-3(10)-2/4+5=149/2 (decimal 74.5)

Factor the polynomial completely.
3x^(2) - 8x + 5

Answers

Answer:

(x-1) (3x-5)

Step-by-step explanation:

i hope this helps have a wonderful day!

Answer:

i am only in 8th grade but this is the answer

(x-1)(3x-5)

Step-by-step explanation:

Write the equation that describes the line with slope = 4 and y-intercept = -2 in slope-intercept form.

Answers

Answer:

2 66

Step-by-step explanation:

beacuse ima gansta and you a cracka so whats up with it

please i need help with 4th grade math please write the answer and shiw the solution hownto solve the problem step by step.thank you much appreciated.


Aaron has between 100 and 110 baseball cards in his collection.If he counts his cards 2 at a time,he has 1 card left over.If he counts his cards 5 at a time,he has 2 cards left over . How many cards are in Aaron's collection ? ​

Answers

Answer:

110

Step-by-step explanation:

Answer:

107 cards

Step-by-step explanation:

So if you skip count by 5 up to one hundred, and then add 2, it's still and even number which the skip counting by 2 says won't work. So then skip count by 5 up to 105 and add 2 to get 107. Hope that makes sense! :)

is 11/12 equivalent or greater to 11/13​

Answers

Answer:

[tex] \frac{11}{12} > \frac{11}{13} [/tex]

Step-by-step explanation:

Here , the fraction has same numerators but the denominators are different. Whenever any 2 fractions have same numerator but diffeent denominators , the fraction whose denominator is less is greater than the fraction whose denominator is more.

Here 11 is common in both the numerators but when we talk about denominators , 12 < 13 . So,

[tex] \frac{11}{12} > \frac{11}{13} [/tex]

Verification :-

[tex] \frac{11}{12} = 0.9166666667 = 0.91(appx)[/tex]

[tex] \frac{11}{13} = 0.8461538462 = 0.84(appx)[/tex]

if g(x)= 1- 3/4x find the value of g(-12)

Answers

Answer:

17/16

Step-by-step explanation:

g(-12) = 1+3/48 = 1+1/16

The function of  g(x)= 1- 3/4x  the value of g(-12) is 1.0625.

Given:

g(x)= 1- 3/4x

g(-12) = 1-3/4x(-12)

g(-12) = 1-3/-48

g(-12) =1.0625

What is function?

The function X to Y assigns exactly one element of Y to each element of X . The set X is called the range of the function and the set Y is called the code interval of the function.

A function is an equation that has only one answer for y for each x. A function specifies exactly one output for each input of a given type. It is common to call either f(x) or g(x) instead of the y function. f(2) means that we should find the value of our function when x is 2.

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Eugene wanted to make note cards by cutting pieces of paper in half. Before starting he got six more pieces to use. When he was done he had 26 half-pieces of paper. With how many pieces did he
start?

Answers

Answer:

7

Step-by-step explanation:

26/2 = 13

13 - 6= 7

Answer = 7

Answer is 7
Why?
26/2 = 13
13-6=7

2 2/3 x 1 1/8
Multiply mixed fractions

Answers

Answer:

3

Step-by-step explanation:

P(2, -3), y = -6x + 10

Answers

Answer:

heffe nedda polla di cepta

Step-by-step explanation:

Help me
Please and thank you

Answers

Answer:

-0.5

Step-by-step explanation:

First start at 1.5 and since it says -2 you will go down -2 to the left and then you will land on -0.5

Hope this helps :)

A 15-pound bag of apples cost $6.30. At that rate, how much would a 29-pound bag of apples cost?

Answers

thats alot of apples. what does a person need with all if those apples?

Answer:

here,

15 pound bag =$6.30

or, 1 pound bag = 6.30/15

or, 1 pound bag = $0.42

or,29 pound bag = 29 X $ 0.42

or, 29 pound bag = $ 12.18

Hence, a 29 pound bag of apple cost $12.18

How do I divide 3 1/3 by 2/9

Answers

Answer:

15

Step-by-step explanation:

thats the answer im not sure if u want me to explain it. But if you do need it to be explained look it up. Give brainliest please.

Answer:

15

Step-by-step explanation:

Turn 3 1/3 to an Improper Fraction

to do that you have to multiply the Whole Number (3) by the Denominator(3)

3×3=9

Then add the numerator (1)

9+1=10

3 1/3 will turn into 10/3

then since you're divided you're going to have to KCF(Keep, Change, Flip)

2/9 will turn into 9/2

When you Flip, Divison will turn into Multiplcation

Look at the picture on how to solve it....

$2.50 per 1/4 hour. Can someone explain how to solve this?

Answers

10$ an hour so they are making $2.50 every 15 minutes

Answer:

2.50 dollars every 15 minutes

Step-by-step explanation:

Paula walked on the treadmill for 11 minutes. The machine told her she had a total of 671 strides. What was her rate in strides per minute?

Answers

Answer:

61 strides per minute

Step-by-step explanation:

You just divide 671 by 11

hope this helps:)

Answer:

61

Step-by-step explanation: All you have to do is divide 671 by 11

State the segment that represents the image, based on the information given.

Answers

Answer should be D. CPA

The clockwise rotation of  ΔAPG about 90 degree gives ΔCPA.

What is Rotation?

Each point in a figure is transformed into a rotation by rotating it a specific amount of degrees around another point.

Given:

We have ΔAPG.

Now, we have to rotate about 90 clockwise rotation.

Then, ΔAPG will overlap on ΔCPA

Hence, the clockwise rotation of  ΔAPG about 90 degree gives ΔCPA.

Learn more about Rotation here:

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