Pls help urgently extra points and mark brainlist easy reading

Answer:

Step-by-step explanation:

Word problem is a topic in mathematics that involves the interpretation of a given question with a mathematical expression so as to determine the value of the required variable.

Example: The price of a pencil is $10, and that of a ruler is $15.25. If Charles bought 5 pencils and 4 rulers, calculate the total amount of money spent.

price of a pencil = $10

price of a ruler = $15.25

Then,

cost of 5 pencils = $10 x 5

                            = $50

cost of 4 rulers = $15.25 x 4

                         = $61

Total amount of money spent by Charles = $50 + $61

                              = $111

The total amount of money spent by Charles is $111.

Answer:

irrational

Step-by-step explanation:

its a decimal that never ends or repeats and cant be accurately turned into a fraction, like pi

Answer:

33

Step-by-step explanation:

[tex] {x}^{2} - 5x - 2 = 0 \\ \\ equating \: it \: with \\ a {x}^{2} + bx + c = 0 \\ we \: find : \\ a = 1 \\ b = - 5 \\ c = - 2 \\ \\ {b}^{2} - 4ac \\ = {( - 5)}^{2} - 4 \times 1( - 2) \\ = 25 + 8 \\ = 33 \\ \\ by \: quadratic \: formula \\ \\ x = \frac{ - b \pm \sqrt{ {b}^{2} -4ac } }{2a} \\ \\ x = \frac{ - ( - 5) \pm \sqrt{33}}{2 \times 1} \\ \\ x = \frac{ 5 \pm \sqrt{33}}{2}...(1) \\ \\x = \frac{ 5 \pm \sqrt{n}}{2}...(2) (given)\\ \\ equating \: equations \: (1) \: and \: (2) \\ \\ \huge \red{ \boxed{n = 33}}[/tex]

Answer:

3. The class median is lower than the exam median

Step-by-step explanation:

The median of the box plot is indicated by the vertical line that divides the box.

Thus, the Class median grade is about 80, while the Exam median grade is more than 80.

Comparing grades, this means that the class median is lower. than the exam median.

Therefore, "the class median is lower than the exam median" is the right information that describes the median.

Answer:

C-  The class median is lower than the exam median

Step-by-step explanation:

i took test

Answer:

Step-by-step explanation:

lets see

27=7*4=7*2*2

48=3*2*2*2*2

both numbers are divisible by 4

27/3=9, 48/3=16

Answer = 3

Answer:

6. my bad is it wrong

Step-by-step explanation:

Answer:

Collision theory, theory used to predict the rates of chemical reactions, particularly for gases. The collision theory is based on the assumption that for a reaction to occur it is necessary for the reacting species (atoms or molecules) to come together or collide with one another.

Answer:

1025 Please Mark Me Brainliest

Step-by-step explanation:

Answer:

45 feet

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

in right angle triangle

h^2=p^2+b^2

5^2=3^2+b^2

25-9=b^2

b=√16=4

radius=4

diameter=4×2=8

Answer:

Step-by-step explanation:

find the inverse of the function y=9x+12

To find the inverse function, swap x and y, and solve the resulting equation for x.

If the initial function is not one-to-one, then there will be more than one inverse.

So, swap the variables: y=9x+12 becomes x=9y+12.

Now, solve the equation x=9y+12 for y.

[tex]f^{-1}[/tex](x) = (x-12)/9

y=(x−12)/9

Answer:

its c

Step-by-step explanation:

Answer:

400 miles

Step-by-step explanation:

50 miles.....1 gallon

x miles......8 gallons

50*8=400

Answer:

c

Step-by-step explanation:

Answer:

QR=11

Step-by-step explanation:

Answer:

$750

Step-by-step explanation:

rent is 30% of $2,500 Tom's total monthly budget.

30/100 x 2500 = 750

Answer:

dont know sos

Step-by-step explanation:

Answer:

Step-by-step explanation:

12 pound turkey

one person eats 1 lb

12 people will eat 12 lbs

Answer:

answer is b

Step-by-step explanation:

Answer:26.9072480941

Step-by-step explanation:

Answer:

A/5%=b-c+3-5%=d£&68+7-7'

Answer:

SEE BELOW

Step-by-step explanation:

A: Yes, it is 18.80%. Sample Mean= 135, Sample Standard deviation= 25/sq rt of 10 = 7.906, normalcdf(142, 999999, 135, 7.906) = .18796 × 100 = 18.796 = 18.80%

B: If we increase the sample size to 50, then, due to the Central Limit Therme, there should be less variation within the data (it should point to a more clear center). Sample Mean= 135, Sample Standard deviation= 25/sq rt of 50 = 3.535, normalcdf(142, 999999, 135, 3.535) = .02385 × 100 = 2.385 = 2.39%

The probability that the mean playtime is more than 142 seconds for an SRS of 10 videos is not accurately calculated and the probability that the mean playtime is more than 142 seconds is 0.0244.

Given :

A) The probability that the mean playtime is more than 142 seconds for an SRS of 10 videos is not accurately calculated because the sample size is too small due to which the central limit theorem cannot be applied.

B) According to the given data, the sample size is 50.

[tex]P(\bar{X}>142)=P\left(\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n} }}>\dfrac{142-\mu}{\dfrac{\sigma}{\sqrt{n} }}\right)[/tex]

[tex]P(\bar{X}>142)=P\left(Z>\dfrac{142-135}{\dfrac{25}{\sqrt{50} }}\right)[/tex]

[tex]P(\bar{X}>142)=P\left(Z>1.9798\right)[/tex]

Using the z table the above expression becomes:

[tex]P(\bar{X}>142)=0.0244[/tex]

For more information, refer to the link given below:

https://brainly.com/question/898534

Answer:

310 is equivalent to 620 because 3 x 20 = 10 x 6 = 60. 930 is equivalent to 620 because 9 x 20 = 30 x 6 = 180. 1240 is equivalent to 620 because 12 x 20 = 40 x 6 = 240.

Step-by-step explanation:

Answer:

30%

Step-by-step explanation:

What's 6 divided by 20?

6/20 = 30