Blank × 0.1 = 47.2 find the missing number

Answer:

A, B, D

Step-by-step explanation:

In total, the number of greetings will be 1159.

Mathematical symbols used to represent quantities or values include numbers. They are employed in the measurement, comparison, addition, subtraction, multiplication, and division processes in mathematics. According to their qualities and properties, numbers can be categorized into a variety of groups, including natural numbers, whole numbers, integers, rational numbers, irrational numbers, real numbers, and complex numbers. There are specific properties and guidelines for mathematical operations for each group of numbers. Mathematics depends on numbers, which are also utilized in many other disciplines, including science, engineering, economics, and statistics.

The number of greetings exchanged between the host and the other mothers and daughters must be counted first. Since there is only one host, the number of mother-daughter pairs is 20 - 1 = 19. There are thus a total of 38 greetings, 19 between the host and the other moms, and 19 between the host and the other daughters.

The number of pleasantries exchanged between the guest mums and everyone else must next be tallied. The host, the other mothers, and the daughters must all be greeted, making a total of 20 - 1 = 19 guest mothers. Thus, each host mother must extend 1 + 19 + 20 = 40 greetings. There will be 760 greetings exchanged between the guest mothers and everyone, or 19 x 40.

The number of pleasantries exchanged between the mothers and the invited girls must also be tallied. Moreover, there are 20 guest girls, so 19 of them must welcome the mothers. As a result, there will be 361 pleasantries exchanged between the mothers and the guest daughters.

In total, the number of greetings will be 38 + 760 + 361 = 1159.

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Answer:

$ 15

Step-by-step explanation:

From the question given above, the following data were obtained:

Avocados >>>> Price (dollars)

3 >>>>>>>>>>>> 5

6 >>>>>>>>>>>> 10

9 >>>>>>>>>>>> ?

From the table above,

3 avocados cost $ 5.

With the above information in mind, we can obtain the cost of 9 avocados as follow:

From the table above,

3 avocados cost $ 5.

Therefore,

9 avocados will cost = (9 × 5)/3 = $ 15

Thus, Josef will pay $ 15 for 9 avocados.

Answer:

15

Step-by-step explanation:

5+10= 15

The perimeter of rectangle M'N'O'P' is given as follows:

54 cm.

A dilation can be defined as a transformation that multiplies the distance between every point in an object and a fixed point, called the center of dilation, by a constant factor called the scale factor.

The ratio between the areas is given as follows:

126/14 = 9.

The area is measure in square units, while the perimeter is measured in units, hence the ratio of the perimeters is the square root of the ratio of the areas, that is:

3.

Hence the perimeter of rectangle M'N'O'P' is given as follows:

3 x 18 = 54 cm.

The complete problem is:

Rectangle MNOP has a perimeter of 18 cm and an area of 14 cm2. After rectangle MNOP is dilated, rectangle M'N'O'P' has an area of 126 cm2. What is the perimeter of rectangle M'N'O'P'?

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Answer:

144 km

Step-by-step explanation:

The monthly cell phone bill when shared data equals zero is given as follows:

$26.

The slope-intercept representation of a linear function is given by the equation presented as follows:

y = mx + b

The coefficients of the function and their meaning are described as follows:

The intercept of the line in this problem is given as follows:

b = 26.

Hence $26 is the monthly cell phone bill when shared data equals zero.

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Answer:

31 33 35 37 39

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

31,33,35,37,39

Answer:

Use photomath and look at each step! Sorry I would help but I’m bad at math.

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

The mean value is simply the average of the numbers.

(8+2+4+1+x)/5=4

15+x=20

x=5

The number on the fifth envelope is 5 if there are five envelopes on a table. Four of the envelopes are marked 8, 2, 4, and 1.

It is defined as the single number that represents the mean value for the given set of data or the closed value for each entry given in the set of data.

It is given that:

There are five envelopes on a table. Four of the envelopes are marked 8, 2, 4 and 1.

As we know, the arithmetic operation can be defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that is +, -, ×, and ÷.

From the data given in the question:

Let x be the number on the fifths envelope:

(8 + 2 + 4 + 1 + x)/5=4

15 + x = 20

x = 5

Thus, the number on the fifth envelope is 5 if there are five envelopes on a table. Four of the envelopes are marked 8, 2, 4, and 1.

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Answer:

f(x) = x² - 4x + 10

Step-by-step explanation:

the standard form of a quadratic function is

f(x) = ax² + bx + c ( a ≠ 0 )

given

f(x) = (x - 2)² + 6 ← expand the factor using FOIL

     = x² - 4x + 4 + 6 ← collect like terms

    = x² - 4x + 10 ← in standard form

I don't know what kind of calculator you have at your disposal, so I'll just give one way of computing the sample mean and standard deviation.

• To get the mean, add up all the data points and divide the total by the number of data:

\(\bar x = \displaystyle \sum_i \frac{x_i}n = \frac{1243+1264+\cdots+1275}9 \approx 1273.89 \\ \implies \boxed{\bar x \approx 1274}\)

• To get the s.d. s, first compute the variance s² by adding up the squared difference between each of the data points and the sample mean, and divide the total by 1 less than the number of data:

\(s^2 = \displaystyle \sum_i \frac{\left(x_i-\bar x\right)^2}{n-1} = \frac{(1243-1274)^2+(1264-1274)^2+\cdots+(1275-1274)^2}8 \approx 1211.61\)

The s.d. is the square root of the variance:

\(s^2 \approx 1211.61 \implies s \approx 34.8082 \implies \boxed{s\approx 35}\)

The 90% confidence interval for the sample mean has upper and lower limits, respectively, of

\(\bar x \pm \dfrac{\left|Z_{\alpha/2}\right| s}{\sqrt n}\)

(positive root for upper limit, negative root for lower limit)

where \(Z_{\alpha/2}\) is the critical value for a (1 - α)×100% confidence level. By critical value, I mean

\(\mathrm{Pr}\left[ Z \le Z_c \right] = c\)

where Z is a random variable following the standard normal distribution.

In this case, we have a 90% confidence level, so α = 0.1, and the critical value is \(Z_{0.05} \approx -1.64\). Then the confidence interval has upper limit

\(\bar x + \dfrac{\left|Z_{0.05}\right|s}{\sqrt n} = 1274 + \dfrac{1.64 \times 35}{\sqrt9} \approx 1292.97 \approx \boxed{1293}\)

and lower limit

\(\bar x - \dfrac{\left|Z_{0.05}\right|s}{\sqrt n} = 1274 - \dfrac{1.64 \times 35}{\sqrt9} \approx 1254.8 \approx \boxed{1255}\)

Answer:

Man I can't express how much joy I have rn. thanks man!

Answer:

Step-by-step explanation:

5 x ( 9 + 4 ) = ( 5 x __ ) + ( 5 x __ )

using distributive property,

the answer is

( 5 x 9 ) + ( 5 x 4 )

if u want the final answer

it becomes

45 + 20

= 65

Hope this helps

plz mark as brainliest!!!!!!!!

Answer:

30 meters after 0.5 seconds

Step-by-step explanation:

To find the values of t for which the rocket's height is 30 meters, we can set h = 30 in the given equation and solve for t:

h = 65t - 5t

30 = 65t - 5t

30 = 60t

t = 30/60

t = 0.5

Therefore, the rocket's height is 30 meters after 0.5 seconds.

option D is the correct answer. The length of the corresponding side in polygon D is 2 inches.

As it is given that the polygon is similar

That means that the ratio of the perimeter of the polygon will be equal to the ratio of the corresponding sides.

perimeter of polygon C/Perimeter of polygon D = side of C/side of D

⇒ 192/48=8/length of the corresponding side(let us consider x)

⇒ 192/48=8/x ⇒ x = 8*48/192 = 2 inches.

Hence, the length of the corresponding side in Polygon D is 2 inches.

Therefore, option D is the correct answer.

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Answer:

4 hours

Step-by-step explanation:

Answer:

See explanation

Step-by-step explanation:

Given:

398,820 were randomly assigned to 2 groups

198,082 were given  a vaccine and 26 developed the disease

200,738 were given placebo and 78 developed the disease

For the vaccine treatment group:

Given:

Sample size, n₁ = 198,082

X₁ = 26

p'₁ = X₁/n₁ \( = \frac{26}{198082} = 0.000131 \)

q'₁ = 1 - p'₁ = 1 - 0.0001312 = 0.99986

For Placebo treatment group:

Sample size, n₂ = 200,738

X₂ = 78

p'₂ = X₁/n₁ \( = \frac{78}{200738} = 0.0003886 \)

q'₂ = 1 - p'₂ = 1 - 0.0003886 = 0.99961

\(Over P = \frac{n_1p_1 + n_2p_2}{n_1 + n_2} = \frac{(198082*0.0001312) + (200738*0.0003886)}{198082 + 200738}\)

\( = \frac{25.988 + 78.007}{398820} \)

\( = 0.0002608 \)

\(Over q = 1 - overp = 1 - 0.0002608 = 0.9997\)

Answer:

x =23

Step-by-step explanation:

ok first, the full degree of a straight line is 180°

subtract 38° out of 180°

180-38= 142

so 6x+4= 142°

subtract 4 from both sides of the equation

6x +4 -4= 142-4

6x=138

divide 6 from 6x and 138

x=23

Answer:

121

Step-by-step explanation:

300

-179

-------

121

Answer:

Step-by-step explanation:

fork knife

The function y = -x² + 3x + 4 is negative when - 1 > x > 4.

A function is made up of three parts: a set of inputs, a set of outputs, and a rule that links the components of the input set to the components of the output set so that each input is paired with exactly one output.

Consider the function,

y = - x² + 3x + 4

For the function to be negative y < 0.

Therefore,

- x² + 3x + 4 < 0

- ( x² - 3x - 4 ) < 0

- (  x² - 4x + x - 4 ) < 0

- [ x ( x - 4 ) + 1 ( x - 4 ) ] < 0

- ( x + 1 ) ( x - 4 ) < 0

Multiplying by -1 on each side of the inequality.

- ( x + 1 ) ( x - 4 )(-1) > 0( - 1 )

( x + 1 ) ( x - 4 ) > 0

x < - 1 or x > 4

Therefore, the function is negative when - 1 > x > 4.

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Answer:

true

Step-by-step explanation:

because 25+11 = 36

______

The study is an experimental study and the controlled variable of factor is the amount of exercise.

The difference between an experimental study and a mere observational study is that in experimental study, we have a controlled variable. There is an independent and a dependent variable.

If we are carrying out a mere observational study, we do not have a controlled variable. we just try to look closely to see if there is a possible  face value relationship between two variables.

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Answer:   Choice D

Valid. The inner circle is those who protrice a hocethorn, and the outer circle is those who are dribbed.

=======================================================

Explanation:

Refer to the diagram below. It's a visual representation of what choice D is describing.

The "protrice a hocethorn" circle is denoted as "circle P" or simply "P" for short. While circle D refers to those who are dribbed.

If we throw a dart randomly at the inner circle, then we always will land in the outer circle. This is because the inner circle is completely contained within the outer circle. The inner circle is a subset of the outer circle.

If you land in circle P, then you land in circle D.

But Steve did not land in circle D (premise 2). This must mean he could not possibly have landed in circle P.

This is how we reach the conclusion that he did not protrice a hocethorn

For more information, check out the modus tollens rule. Some logic textbooks may refer to it as "denying the consequent".

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

Here's another example of modus tollens

We can think of the events "it rains" and "the grass got wet" as two dominoes. If the second domino did not fall over, then there's no way the first one did. This is because first one topples the second.

Answer:A

Step-by-step explanation: make me brainlist if correct

Solving the given logarithmic equation, it is found that the horn is 100 times more intense compared to the weakest sound heard to the human ear.

The equation is given by:

\(d = 10\log{\frac{p}{p_0}}\)

In which:

In this problem, we have that d = 20, and we have to solve the logarithmic equation for p to find how many times more intense the sound is:

\(d = 10\log{\frac{p}{p_0}}\)

\(20 = 10\log{\frac{p}{p_0}}\)

\(\log{\frac{p}{p_0}} = 2\)

The logarithm is inverse of the function \(10^x\), hence we apply the function to both sides to find the ratio.

\(\frac{p}{p_0} = 10^2\)

\(\frac{p}{p_0} = 100\)

Hence, the horn is 100 times more intense compared to the weakest sound heard to the human ear.

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Answer:

$960.24

Step-by-step explanation:

Hello!

Let the regular price be x.

38% of x = 0.38x

0.38x = 364.89

The price of the table yesterday was around $960.24.

The author of the review is disappointed with the meatball sub casserole recipe posted on Recipe Masters, which did not turn out well despite following the recipe.

The author recommends that others should not attempt to make the recipe and believes that Recipe Masters should ensure that their posted recipes are reliable and thoroughly tested. The author also implies that the quality of the recipes on Recipe Masters is not as advertised, which could potentially lead subscribers to lose faith in the service and seek out free recipe sites instead.

Therefore, a suitable summary of the author's point of view would be: The author is dissatisfied with the meatball sub casserole recipe on Recipe Masters, which did not work out well and believes that Recipe Masters should provide reliable, thoroughly tested recipes as advertised.

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