if a student took a test three times and got 90 all three times, what is the score needed to bring down the average to 88

After answering the question provided, we can predict that the result will be as by equation As a result, the correct response is: Minimum: 41.64; Maximum: 62.76.

A mathematical equation is a process that links two statements and indicates equality using the equals sign (=). A mathematical statement that proves the equality of two mathematical expressions is known as an equation in algebra. For instance, the equal sign separates the numbers 3x + 5 and 14 in the equation 3x + 5 = 14. A mathematical formula may be used to understand the link between the two sentences that are written on opposite sides of a letter. Frequently, the logo and the particular software are identical. like in 2x - 4 = 2, for example.

A binomial distribution with the specified values of n and p has a mean of = np and a standard deviation of = sqrt(np(1-p)).

Inputting n = 261 and p = 1/5 results in:

μ = np = 261 × 1/5 = 52.2

5.28 is equal to sqrt(np(1-p)) = sqrt(261 1/5 4/5)

Calculating the minimal typical value of 2 is as follows:

μ − 2σ = 52.2 − 2 × 5.28 ≈ 41.64

The calculation for the maximum typical value + 2 is as follows:

μ + 2σ = 52.2 + 2 × 5.28 ≈ 62.76

These values are rounded to the nearest hundredth, giving us:

The range is 41.64 to 62.76.

As a result, the correct response is: Minimum: 41.64; Maximum: 62.76.

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Answer:

Minimum: 39.28; maximum: 65.12

The mistake Lori made when multiplying is that she didn't regroup the 2 in the tens column, which is correct option(A).

Arithmetic operations can also be specified by the subtract, divide, and multiply built-in functions.

The operator that perform arithmetic operation are called arithmetic operators .

Lori solved this multiplication problem.

29 × 31 = 699

The mistake Lori made when multiplying is that she didn't

We first construct the extended multiplication.

The result of multiplying 1 × 9 is 9.

The result of multiplying 1 × 2 is 2

After that, we multiply 3 × 9 to get 27. Since 27 is a two-digit number, we must carry the first digit, 2, to the following column.

Then we carry the digit of 2, which is 8, and multiply 3 × 2, which results in 6.

Finally, we get 899 by adding 870 and 29.

Hence, the mistake Lori made when multiplying is that she didn't regroup the 2 in the tens column.

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Answer:

Step-by-step explanation:

(2x^2-x)+(x^2+3x-1)

2x^2-x+x^2+3x-1

x^2+3x-1

5x^2+2x-1+(4x^2-x+2)

5x^2+2x-1+4x^2+x-2

9x^2+6x-3

(3x^2+2x+1)+(x^2-1)

3x^2+2x+1+x^2-1

4x^2+2x

-x^2-1+(4x^2-x)

-x^2-1+4x^2-x

3x^2-1-x

Answer:

There is a key for a good life just work hard be nice and that key will be in your posetion

Step-by-step explanation:

all you have to do is work hard no need for brainly

Answer:

Part A) The independent variable is the hours that Tiya mows her neighbor's lawn, and we can denote that with x. It's the variable that isn't affected by other factors. The dependent variable is the amount of money Tiya earns, which we can denote with y. The dependent variable is the variable that is affected by other factors. The amount of money Tiya makes depends on how many hours she works.

Part B) As stated in part A, x is the hours and y is the money earned. The ordered pairs are in (x, y) form, with x being the hours and y being the money earned. For example, if Tiya worked one hour, x would be 1. As she earns 7 dollars per hour, she would earn 7 dollars (1*7), which is y. Therefore, one ordered pair could be (1, 7). Two hours would give Tiya 14 dollars, so we have another pair of (2, 14). Three hours would give Tiya 21 dollars, so we have (3, 21). We can do that for any numbers.

Part C) With every hour, Tiya earns 7 dollars. In order to find y, which is the amount of money totally earned, we multiply x by 7 (7 dollars per hour). Therefore, y = 7x.

answer:

6

step-by-step explanation:

v = l x w x h

v = (1)(2)(3/2)

v = 3

3 ÷ 1/2 = 6

Answer:

y= -1x+ 3

Step-by-step explanation:

y= Mx+ C

m= gradient or slope

m= y2-y1/ x2-x1

=5-(-2)/-2-5

=7/-7

=-1

C= intercept on the y-axis

=3

therefore y= -1x + 3

Answer: each pencil would cost 0.36¢

Step-by-step explanation: first, divide 12.82 by 36 to get the unit rate. The answer should be 0.356111111. Now round that to the nearest cent. 0.356111111~0.36

Answer:

Each pencil is worth 36 cents

Step-by-step explanation:

To do the problem we have to find the unit price which is [tex]Total Price/Total Units[/tex]

Once you have that round the answer then the answer is 0.36

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☁Brainliest is greatly appreciated!☁

Hope this helps!!

- Brooklynn Deka

Answer:

arc BD = 148°

Step-by-step explanation:

The arc BC  is twice the inscribed angle BDC

arc BC = 2 × 56° = 112°

The 3 arcs sum to 360° , then

arc BD = 360° - (100 + 112)° = 360° - 212° = 148°

Answer:

[tex]f(x) = \frac{2x}{5y+6}[/tex]

Step-by-step explanation:

Answer:

Below!

Step-by-step explanation:

f(x) = 2x/5x+6

Sub y for f(x) : y = 2x/5x+6

Swap x and y : x = 2y/5y+6

Multiply both sides by 5y+6 : 2y = (5y + 6) x

Distribute x : 2y = 5xy + 6x

Change sign : 2y - 5xy = 6x

Factor out y : (2-5x)y = 6x

Divide both sides by 2-5x : y = 6x/2-5x

Substitute for y : f^-1(x) = 6x/2-5x

Answer: f^-1(x) = 6x/2-5x

That's the best I could do with my current math knowledge, I hope it makes sense :)

Answer:

...

Step-by-step explanation:

....

Answer:

The two angles are equal where the unequal sides meet.

It can be viewed as a pair of congruent triangles with a common base.

It has 2 diagonals that intersect each other at right angles.

The longer or main diagonal bisects the other diagonal.

A kite is symmetrical about its main diagonal

Circumference of a circle = Diamter x PI

Because the circumference is given in terms of PI, the diameter is the given number.

The diameter would be 7 feet

Answer:

252

Step-by-step explanation:

espero que te ayude :3

[tex]15\% \bold{ \: \: de} \: 1680[/tex]

[tex] \frac{15}{100} \times 1680 \\ \\ = \frac{15}{10} \times 168 \\ \\ = \frac{2520}{10} \\ \\ = 252[/tex]

The least value, first quartile, median, third quartile, and greatest value of the data are 4, 5, 8, 9.75 and 15 respectively.

The first step is to arrange the number in ascending order: 4, 5, 5, 6, 8, 8, 9, 10, 12, 15

The median is the number in the center of the data set. The number is 8.

First quartile = 1/4 x (n + 1) = 2.75 number : 5

Third quartile = 3/4 x (n + 1) = 8.75 = 9.75

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Answer:

7 4/5

Step-by-step explanation:

2 1/10 + 5 7/10 = 2 + 5 + 1/10 + 7/10 = 7 8/10 = 7 4/5

Answer:

I do not see anything

Step-by-step explanation:

?????????

Answer:

Integers.

Step-by-step explanation:

I'm assuming you are talking about number groups, such as integers, natural numbers, whole numbers, etc.

If so, then -15 belongs to the 'integers' group.

This is because consists of numbers that are not fractional components, such as -5, 5, 4, -4, -15, 15, 8, 91, 200, -200, etc. Basically, integers include only negative and positive numbers.

Natural numbers include positive integers only, such as 5, 15, 87, 100, 20, etc.

Whole numbers do not include negative numbers, fractions, or decimals. Examples of whole numbers include: 8, 16, 20, etc.

Therefore, -15 belongs to integers.

Answer:

Hundredth? Hundredth is for decimals. If you meant to the nearest Hundred, then it's 100.

Step-by-step explanation:

If you actually meant hundredths though, then it would be 75, because 75 doesn't have any decimals

Answer:

-12.444

Step-by-step explanation:

Answer:

12.444444444

Step-by-step explanation:

I am not sure you have ordered the follwoing.

But the answer should be 12.44444444444 according to Y+Xx/x

Answer:

[tex]Mid(A) = 73[/tex]

[tex]IQR(B) = 8[/tex]

The difference of the medians of class A and class B is between  the interquartile range of either data set.

Step-by-step explanation:

Given

The attached box plots

To answer this, see attached image for how to read a box plot

With reference to the attached image of how to read the box plot;

Solving (a): The median of class A

[tex]Mid(A) = 73[/tex]

Solving (b): IQR of class B

IQR is calculated as:

[tex]IQR =Q_3 - Q_1[/tex]

From the box plot of class B, we have:

[tex]Q_3 = 87[/tex]

[tex]Q_1 = 79[/tex]

So, we have:

[tex]IQR(B) = 87 - 79[/tex]

[tex]IQR(B) = 8[/tex]

Solving (c):

[tex]Mid(A) = 73[/tex]

[tex]Mid(B) = 82[/tex]

[tex]IQR(B) = 8[/tex]

IQR of class A is calculated as:

[tex]IQR =Q_3 - Q_1[/tex]

From the box plot of class A, we have:

[tex]Q_3 = 76[/tex]

[tex]Q_1 = 68[/tex]

So, we have:

[tex]IQR(A) = 78 - 68[/tex]

[tex]IQR(A) = 10[/tex]

The difference (d) between the medians is:

[tex]d =Mid(B) - Mid(A)[/tex]

[tex]d = 82 - 73[/tex]

[tex]d = 9[/tex]

From [tex]smallest[/tex] to [tex]largest[/tex], we have: 8, 9, 10

i.e. IQR(B), d, IQR(A)

Answer:

73

8

about half.

Step-by-step explanation:

Answer:

0.7

Step-by-step explanation:

9514 1404 393

Answer:

  (b)  g, h, f

Step-by-step explanation:

The larger the magnitude of the vertical scale factor, the quicker the graph takes on higher values. That makes its appearance narrower.

Here, you want to list the functions in decreasing order of vertical scale factor:

  g(x) . . . scale factor 4

  h(x) . . . scale factor 2

  f(x) . . . scale factor 1/3

Answer:

233.3 cubic units

Step-by-step explanation:

Volume of a pyramid

[tex] = \frac{1}{3} [/tex] × base area × height

The volume of the pyramid

[tex] = \frac{1}{3} \times (10 \times 10) \times 7[/tex]

[tex] = \frac{1}{3} \times 100 \times 7[/tex]

[tex] = 233.333...[/tex]

= 233.3 cubic units (rounded to the nearest tenth)

Answer: 45

Step-by-step explanation:

S is 45 (labelled on the diagram)

Answer: Step-by-step explanation:

11.39°

12.∠DOC=180-63-39=78

13.∠EOA=180-39=141

14.mAB=m∠AOB=39

15.mDC=m∠DOC=180-63-39=78

16.mAE=m∠EOA=180-39=141

17.mAED=m∠AOD=180

18.mBED=m∠EOD+m∠AOD=180+39=219

19.mEDA=m∠BOE+m∠AOD=180+39=219

Answer:

Step-by-step explanation:

Rational numbers are the type of numbers that can be written in fraction forms (1/b where a and b are integers and b ≠ 0). Rational numbers also include decimals that are repetitive (0.313131313131) and decimals that end (0.25).

The opposite are irrational numbers that cannot be written in fraction forms and that include decimals that do not end or repeat (0.249654296432926....).

It is good to know a fraction with denomination equal to zero will give an undefined value.

Step-by-step explanation:

This is the answer in the picture

Answer:

[tex]\frac{1}{7\cdot \:2^{\frac{2}{3}}x^3\sqrt[3]{x}}[/tex]

--------------

[tex]=\frac{\sqrt[3]{x^2}}{7\cdot \:2^{\frac{2}{3}}x^4}[/tex]

[tex]simplify :\sqrt[3]{x^2} :x^{2/3}[/tex]

[tex]=\frac{x^{\frac{2}{3}}}{7\cdot \:2^{\frac{2}{3}}x^4}[/tex]

[tex]simplify : \frac{x^{2/3} }{x^4} : \frac{1}{x^{33} \sqrt{x} }[/tex]

[tex]=\frac{1}{7\cdot \:2^{\frac{2}{3}}x^3\sqrt[3]{x}}[/tex]

--------------------

hope it helps...

have a great day!