How do I ask a quaestion

Answer:

$36.75

Step-by-step explanation:

12.25×3=36.75

12.25 per hour to find 3 hours you multiply by 3 which is 36.75

explain more for me to understand better pls

Answer:

[tex]61\% = \frac{61}{1 00 } \:→fractional \: expression \\ 61\% = 0.61 \: → decimal \: expression[/tex]

Answer:

a) The mean is $55 and the standard deviation is $0.6957

b) The shape of the sampling distribution of x is approximately normal.

c) 0.0749 = 7.49% probability that the average cell phone service paid by the sample of cell phone users will exceed $56.

Step-by-step explanation:

Normal probability distribution

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

In this question:

Mean of the distribution: 55

Standard deviation of the distribution: 22

Sample of 1000.

This means that:

[tex]\mu = 55, \sigma = 22, n = 1000[/tex]

Part A: What are the mean and standard deviation of the sample distribution of X?

By the Central Limit Theorem, the mean is 55 and the standard deviation is [tex]s = \frac{22}{\sqrt{1000}} = 0.6957[/tex].

Part B: What is the shape of the sampling distribution of x?

By the Central Limit Theorem, the shape of the sampling distribution of x is approximately normal.

Part C: What is the probability that the average cell phone service paid by the sample of cell phone users will exceed $56?

This is 1 subtracted by the pvalue of Z when [tex]X = 56[/tex]. So:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{56 - 55}{0.6957}[/tex]

[tex]Z = 1.44[/tex]

[tex]Z = 1.44[/tex] has a pvalue of 0.9251

1 - 0.9251 = 0.0749

0.0749 = 7.49% probability that the average cell phone service paid by the sample of cell phone users will exceed $56.

Answer:

1/5,30%,75%,5/6

Step-by-step explanation:

first turn all of them in to decimals:

1/5=0.20

30%=0.30

75%=0.75

5/6=0.83

then put the decimals in order from least to greatest

done!

Answer:

4.6 is between 4 and 5

-2 1/3 is between -2 and -3

Step-by-step explanation:

That is the numbers around them in a number line

Answer:

Step-by-step explanation:

Volume of the entire figure = L (Area 1  + Area 2)

where L = 10 m

Area 1 (blue prism) = 4 x 3 = 12 m²

Area 2 (brown prism = 1 x 7 = 7 m²

plugin  values into the formula:

Volume of the entire figure = L (Area 1  + Area 2)

                                             = 10 (12 + 7)

                                             = 120 m³ + 70 m³

                                             = 190 m³

Answer:

the magnitude of a real number without regard to its sign

Step-by-step explanation:

An example would be :

-16 =[16]

Answer:

Y=x+3

Step-by-step explanation:

Substitute c=3 and m=1 in eqn 1

y=1x+3

y=x+3

Thus the required equation of the line is found

Answer:

675

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define

(5t - 3) · (3t + 7)

t = 6

Step 2: Evaluate

Answer:

(5t -3)(3t+7) (im multiplying them together, if that's not what the questions asking lmk. but anyway, put them next to eachother and then plug in 6 for t)

(5(6) -3)(3(6)+7) (multiply where possible)

(30 -3)(18+7) (use the distributive property/foil to multiply the two)

540 +210 -54 -21 (add the positive numbers and subtract the negative )

750 - 75 (subtract)

675 (the answer)

Step-by-step explanation:

I hope this helps :)

Answer:

Answer Placeholder (I'm going to solve it and answer when I'm done)

Step-by-step explanation:

Answer:

19

Step-by-step explanation:

let the smallest square be A, medium square is B and the largest is C ;

as the length side of the main square is 28, we can find that,

A= 28-22 = 6

C= 28-15 = 13

So to find B,

A+B+C = 28

B = 28-A-C

B = 28-6-13 = 9

So the line with questioned mark is,

28-9 = 19

Answer: Duno

Step-by-step explanation:

Answer:

2 handshakes

Step-by-step explanation:

10 divided by 5 is 2

Answer:

A,B,D,E

Step-by-step explanation:

hope u get to right

Answer:

12

Step-by-step explanation:

TB= TA

6= TA

TA+TB= AB

6+6=12

Answer:

There are 4 pieces of lasagna left

Answer:

$190.

Step-by-step explanation:

We can write the equation 120=25+1/2n where n is the cost of a new guitar. First, we subtract 25 from both sides to get 95=1/2n. Then, we multiply both sides by 2 to get 190=n. Therefore, the cost of a new guitar is $190.

Answer:

the answer is d

Step-by-step explanation:

basically dived that shape to 2 peices.

the big rectangle: 12 x 7 = 84

the small rectangle: 2 x 3 = 6

then add these 2 areas together to get the area of the object: 84 + 6 = 90

therfore, teh area of the object is 90 sq cm

mark brainliest plz :P

Answer:

its £39

Step-by-step explanation:

Answer:

Dive 2: -9 37/40 feet

Dive 3: -12 1/20 feet

Step-by-step explanation:

To solve this, we subtract 2 1/8 from -7.8 twice. First, convert -7.8 to a mixed number, that gets us -7 8/10. Now, we find the LCM of 8 and 10. That is 40. Now, we multiply 1/8 by 5/5 to get 5/40. Now, we multiply 8/10 by 4/4 to get 32/40. Now, we subtract 2 5/40 from -7 32/40. This gets us -9 37/40. That means Dive 2 was -9 37/40 feet. Now, we subtract 2 5/40 from -9 37/40. That gets us -12 2/40. We can simplify that to -12 1/20. That means Dive 3 was -12 1/20 feet.

Answer:

6 more girls than boys

Step-by-step explanation:

7+5=12

36 divided by 12 = 3

3x7=21

3x5=15

Answer: Rectangle

Reasoning: 4 straight sides, 2 pairs of sides of equal length.

Answer: 40.2t - 25

Step-by-step explanation:

-0.2t - 5 (-8t + 5)

-0.2t + 40t -25

39.8t - 25

Answer:

x - 7

Step-by-step explanation:

Let's let x = 4 and see which one would be different

x - 7 = 4 - 7 = -3

7 + (-x) = 7 + -4 = 3

-x + 7 = -4 + 7 = 3

7 - x = 7 - 4 =3

As you can see, the top answer would be negative while all the rest are positive. This is because, in that case, the negative sign was attached to the 7 instead of the x.

Answer:

x - 7

Step-by-step explanation:

Answer:

23

Step-by-step explanation:

((3+2)^2+2)-2^2

   5^2

    25+2=27-4=23

Answer:

swedwedvads

Step-by-step explanation:

evEVevwq