(-5) X ? =-15 find the missing number

Answer:

.2 repeating

Step-by-step explanation:

if you are allowed to use calculators, then do so, if not, you're going to have to do a lot of division

Answer:

0.22222222222222222.....

The answer is 0.2 and 2 is repeating

Step-by-step explanation:

This is the answer because:

1) If you divide 2 and 9, you will keep on getting 0.2222222 as your answer; therefore 0.2 is the repeating decimal.

Hope this helps!

The probability of Event A is 1/360 and the probability of Event B is 1/15.

For Event A, we can calculate the probability by considering the order in which the acts are scheduled.

There are 6 acts, so there are 6 possible choices for the first act. After the first act is scheduled, there are 5 remaining acts, so there are 5 possible choices for the second act.

Similarly, there are 4 possible choices for the third act, and 3 possible choices for the fourth act.

Finally, there are 2 possible choices for the fifth act, and only 1 choice remains for the last act.

Therefore, the total number of possible ways to schedule all 6 acts is:

6 x 5 x 4 x 3 x 2 x 1 = 720

Since we are only interested in one specific order of the first four acts, we need to count the number of ways to schedule the remaining two acts after the first four have been scheduled in the desired order.

There are 2 remaining acts, so there are 2 possible choices for the fifth act.

Only one act remains for the last slot.

Therefore, the total number of ways to schedule all 6 acts such that the acrobat is first, the singer is second, the violinist is third, and the whistler is fourth is:

1 x 1 x 1 x 1 x 2 x 1 = 2

Thus, the probability of Event A is:

P(A) = 2/720 = 1/360

For Event B, we want to count the number of ways to schedule the first four acts as the whistler, the acrobat, the guitarist, and the dancer, in any order.

There are 4 acts, so there are 4 possible choices for the first act. After the first act is scheduled, there are 3 remaining acts, so there are 3 possible choices for the second act.

Similarly, there are 2 possible choices for the third act, and only one choice remains for the fourth act.

Therefore, the total number of possible ways to schedule the first four acts is:

4 x 3 x 2 x 1 = 24

Since we do not care about the order in which the last two acts are scheduled, we can simply choose any two acts from the remaining 2. There are 2 ways to do this.

Therefore, the total number of ways to schedule all 6 acts such that the first four acts are the whistler, the acrobat, the guitarist, and the dancer, in any order is:

24 x 2 = 48

Thus, the probability of Event B is:

P(B) = 48/720 = 1/15

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Answer:

y > 0

Step-by-step explanation:

\(y = e^{4x}\)

This is an exponential function;

Consider as x → ∞, y → ∞;

If x = 0. y = e⁰ = 1;

As x → -∞, y → 0;

y ranges from 0 to ∞ therefore, i.e. y > 0

4.2 x 10^8 is  2*10^6  times the value of 2.1 x 10^2 when division is performed.

The concept that will be used to solve the question is division operation.

We were given 4.2 x 10^8 which is greater than  2.1 x 10^2

The operation can be expressed as :

4.2 x 10^8 =( n *2.1 x 10^2)

where n = the number of times that 4.2 x 10^8  is greater than 2.1 x 10^2

Then make n the subject of the formular which is

n = 4.2 x 10^8/2.1 x 10^2

n = 2*10^6

Therefore, the values of 4.2 x 10^8 is greater than 2.1 x 10^2 in 2*10^6 times.

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Answer:

21 rides

Step-by-step explanation:

let x = number of rides you can ride

32.50 + 0.80x \(\leq\) 50

subtract 32.50 from both sides

0.8x \(\leq\) 17.5

divide the left and right by 0.8

x \(\leq\) 21.875

this means you can ride 21 times, because you can't ride a ride unless you can afford the whole cost

how to check; 32.50 + 0.8(21) is 49.30 and 80 cents more would go over your 50 dollar spending limit

This line plot shows the measurements of cars and trucks in half-inch increments from 3 inches to 12 inches.

A line plot, also known as a dot plot or a dot chart, is a simple graph that displays data along a number line. In a line plot, each data point is represented by a dot or other symbol above its location on the number line. The dots are used to indicate the frequency or number of times each value occurs in the data set. Line plots are often used to display small to moderate-sized data sets and are especially useful for displaying categorical or discrete data. They are simple to create and interpret, making them a popular tool in data analysis and visualization.

Here,

A line plot is a graph that displays data along a number line, with X's or other marks above each value to indicate how many times it appears in the data set. To create a line plot from the measurements of the cars and trucks, you would follow these steps:

Choose a scale for the number line that includes all the measurements. For example, you could use a scale where each unit represents 1 inch, and the number line goes from 0 to 12 inches.

Make a dot for each measurement at the corresponding location on the number line. For example, if a car measures 5.5 inches, you would make a dot above the number 5.5 on the number line.

Repeat step 2 for each measurement, placing each dot above the corresponding value on the number line.

Count the number of dots above each value on the number line and make an X or other mark above the corresponding value to indicate how many times it appears in the data set.

Connect the X's or marks above each value to create a line that shows the frequency of each measurement.

Here is an example of what the completed line plot might look like:

        X

3        X

3  X     X

4  X     X

4  X     X

5  X     X

5  X  X  X

6  X  X  X

6  X  X  X

7  X  X  X

7  X  X  X

8  X  X  X

8  X  X  X

9  X  X  X

9  X  X  X

10  X  X  X

10  X  X  X

11  X  X  X

11  X  X  X

12  X  X  X

The X's above each value indicate how many times that value appears in the data set.

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Complete question:

Robert measured the cars and trucks to the nearest half inch measure each and complete the line plot.

        X

3        

3  

4  

4  

5  X     X

5  X  X  X

6  X  X  X

6  X  X  X

7  X  X  X

7  X  X  X

8  X  X  X

8  X  X  X

9  X  X  X

9  X  X  X

10  X  X  X

10  X  X  X

11  X  X  X

11  X  X  X

12  X  X  X

Answer:

33 m^2

Step-by-step explanation:

Since the area of a kite can be found by h1*b1 + h2*b2, the area is

3 * 1 + 3 * 10 = 33 m^2

Answer:

To express the given expression T² − 8t + 16 in the form (t+a)sqrd , we need to factor it.

We can start by noticing that T² − 8t + 16 can be written as (T-4)² which is the square of a binomial.

We can see that T² − 8t + 16 can be factored as (T-4)² .

So the expression T² − 8t + 16 can be expressed in the form (t+a)sqrd where a = -4

(t-4)² = (t+(-4))²

So the expression T² − 8t + 16 can be expressed in the form (t-4)²

Answer:

D.

Step-by-step explanation:

6a² = surface area for cube

6(5)² = 150

2\(\pi\)(r)(h)+2\(\pi\)r²  = surface area cylinder

2\(\pi\)(2)(3)+2\(\pi\)(4) = 20pi

150 + 20pi = 212.8318531

Answer: 32

Step-by-step explanation:

We know that the original number of paper snowflakes was 36, plus 28 given by her brother. The new total would be 64 paper snowflakes and she only uses half of the paper snowflakes. The answer would be 32.

Answer:

Starting with the equation:

(x + 1)^2 = 13/4

We can use the square root property, which states that if a^2 = b, then a is equal to the positive or negative square root of b.

Taking the square root of both sides, we get:

x + 1 = ±√(13/4)

Simplifying under the radical:

x + 1 = ±(√13)/2

Now we can solve for x by subtracting 1 from both sides:

x = -1 ± (√13)/2

Therefore, the solutions to the equation are:

x = -1 + (√13)/2 or x = -1 - (√13)/2

Step-by-step explanation:

The perimeter of Sam's string is 178 inches.

Given information:

Sam has a rectangular shaped window.

Length = 65 inches.

Width = 24 inches.

To find the perimeter:

you can use the formula:

Perimeter = 2 x (Length + Width)

Substituting the values into the formula, we have:

Perimeter = 2 x (65 + 24)

Perimeter = 2 x 89

Perimeter = 178 inches

Therefore, the perimeter of the rectangular window is 178 inches.

So, the perimeter of the rectangular window is 178 inches. This means that if you were to walk along the outline of the window, you would cover a total distance of 178 inches. It's important to note that the perimeter represents the total length of all the sides combined, and it is measured in the same unit (in this case, inches) as the length and width of the window.

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Therefore , the solution of Inverse function comes out to be of x-20 equals to x+20

A function f has an inverse function only if for every y in its range there is only one value of x in its domain for which f(x)=y. This inverse function is unique and is frequently denoted by f−1 and called “f inverse.” For an overview into the idea of an inverse function, see the function machine inverse.Steps for finding the inverse of a function fReplace f(x) by y in the equation describing the function. Interchange x and y. In other words, replace every x by a y and vice versa.

Here,

Solve for y.

Replace y by f-1(x).

y=x-20

x=y-20

Solve for y,x = y-20

x+20

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Answer:

ƒ^(-1)(x) = x + 20

Step-by-step explanation:

To find the inverse of the function ƒ(x) = x - 20, we need to switch the roles of x and y and solve for y.

Let's start by replacing ƒ(x) with y:

y = x - 20

Next, swap x and y:

x = y - 20

Now, solve for y by isolating it:

x + 20 = y

Therefore, the inverse of the function ƒ(x) = x - 20 is given by:

ƒ^(-1)(x) = x + 20

The sum of a number squared and three less than the number is 129.

Mathematical expression: x^2 + ( 2 x - 3 ) = 129

x^2 + 2 x -3 = 129

x ^2 + 2x - 3 - 129 =0

x ^2 + 2x - 132 = 0

Answer:

43.6 has 3 significant figures.

\(\textit{arc's length}\\\\ s = r\theta ~~ \begin{cases} r=radius\\ \theta =\stackrel{radians}{angle}\\[-0.5em] \hrulefill\\ s=175\pi \\ \theta =\stackrel{1~revolution}{2\pi } \end{cases}\implies 175\pi =r(2\pi )\implies \cfrac{175\pi }{2\pi }=r\implies \stackrel{ft}{87.5}=r\)

The dot plot that displays the data distribution is the dot plot on the lower left corner of the options with

Two dots at 0

One dot at 2

Two dots at 3

Four dots each at 4, 5, and 6

One dot at 7

A dot plot is a graphical presentation of data, on a number line, with the number of points of dot representing the frequency of data at each value on the number line.

The data can be presented as follows;

2, 6, 4, 3, 0, 3, 4, 6, 5, 0, 4, 5, 7, 5, 6, 4, 5, 6

The above data can be arranged in increasing order as follows; 0, 0, 2, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7
Therefore, the frequencies of 0s is two, the frequencies of 4s, 5s and 6s are four each, and the frequency of 7 is one, which corresponds to the third graph or the graph in the bottom left corner of the figure.

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The greatest distance that can be filmed by the drone is 6374.5 km. Rounded to the nearest kilometer, 6375 km.

Now, For the greatest distance that can be filmed by a drone with a maximum altitude of 0.12 km, we can use the Pythagorean theorem.

Let's a right triangle with one leg being the radius of the Earth 6378 km and the other leg being the maximum altitude of the drone 0.12 km.

Hence, The hypotenuse of this triangle represents the line of sight from the drone's camera to the horizon.

Hence, By Using the Pythagorean theorem, we can solve for the length of the hypotenuse:

h² = 6378² + 0.12²

h = √40684000.145

h = 6374.5 km

Therefore, The greatest distance that can be filmed by the drone is 6374.5 km. Rounded to the nearest kilometer, 6375 km.

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An equation which is true include the following: A. 4 × n × n × n × n = 4n⁴.

In Mathematics, an exponent is a mathematical operation that is typically used in conjunction with an algebraic expression in order to raise a quantity to the power of another.

This ultimately implies that, an exponent is represented by the following mathematical expression;

bⁿ

Where:

By applying the multiplication law of exponents for powers to each of the expressions, we have the following:

4 × n × n × n × n = 4n⁴

4 × n⁴ = 4n⁴

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Answer:

Eastbound train: 95 miles per hour

Westbound train: 105 miles per hour

Step-by-step explanation:

Let:

The eastbound train travels 10 miles per hour slower than the westbound train

So e = w - 10

Every hour, the distance between the two trains is the sum of the values.

(w - 10) + w = distance apart in 1 hour

5(w - 10 + w) = distance after 5 hours

Solve:

The westbound train is 105 miles/ hour.

The eastbound train is 95 miles per hour

-Chetan K

The number of square feet needed to cover the hole is 44ft²

To find this, we need to find the area of the green region and subtract the little square that it has inside.

Remember that for a rectangle, the area is the product between the dimensions, then the area of the green region is:

A = 12ft*4ft = 48ft²

The little square has an area:

a = 2ft*2ft = 4ft²

Then the area needed is:

area = 48ft² - 4ft² = 44ft²

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For Data Set B, we see that the data is more varied. The absolute deviations are 4, 3, 2, 5. The average of these absolute deviations is 3.5. MAD_B = (4+3+2+5)/4 =3.5 M ADB

Hence, The average of these absolute deviations is 3.5.

Just add the powers while it is multiply

-1+(-3)

= -1 - 3

= -4

So it is \(2^{-4}\)

Answer:

45% as a decimal is 0.45

Step-by-step explanation:

45% ÷ 100 = 0.45

Answer:

x = 6

y = 12

Step-by-step explanation:

Answer:

Step-by-step explanation:

19.

The numbers are m and n

Sum of m and n = m + n

Sum is multiplied by 91 = 91 x ( m + n )

20.

Let the number be = m

Six subtracted from the number = m - 6

41 times the difference = 41 x ( m - 6)

21.

Let the number be = r

Difference between 83 and 10 = 83 - 10 = 73

\(The \ number\ divided \ by\ the \ difference \ = \frac{r}{73}\)

22.

Total of p and 23 = p + 12

\(Total \ divided \ by \ 18 = \frac{p + 12 }{18}\)

23.

The product of c and 3  = 3c

Sum of 9 and 12 = 21

Product is more than Sum = 3c + 21

24.

Sum of y  and 10 = y + 10

Number x decreased by 5 = x - 5

\(Sum \ divided \ by \ difference = \frac{ y + 10 }{x - 5}\)

Answer:

D) 1541

Step-by-step explanation:

I like to answer it w without deriving the formula of f(g(x)). So, we go this way, you firstly have to find g(7) which will be equal to 3 * 7 - 5 = 16.

And then you find f(16) = 6*16*16+5 = 1541. That's all.

The nth term of the sequence -3, 0, 5, 10, 25, 5, 47 can be represented by the piecewise function:

nth term =

-3 + (n - 1) * 5, if n mod 5 ≤ 5

5 + (n - 1) * 15, if n mod 5 > 5

To find the nth term of a sequence, we need to identify the pattern or rule that governs the sequence. Upon analyzing the given sequence -3, 0, 5, 10, 25, 5, 47, we can observe the following:

The sequence starts with -3 and increases by 5 each time, except for the 5th term, where it increases by 15 (from 10 to 25). After the 5th term, the sequence starts again with 5 and continues to increase by 15 each time.

Based on this pattern, we can divide the sequence into two parts:

Part 1: -3, 0, 5, 10, 25 (increasing by 5 each time)

Part 2: 5, 20, 35, 50, 65 (increasing by 15 each time)

Now, to determine the nth term, we can consider the formula for arithmetic sequences:

nth term = first term + (n - 1) * common difference

For Part 1, the first term is -3 and the common difference is 5. Thus, the nth term for Part 1 is given by:

nth term = -3 + (n - 1) * 5

For Part 2, the first term is 5 and the common difference is 15. Therefore, the nth term for Part 2 can be expressed as:

nth term = 5 + (n - 1) * 15

However, since the sequence alternates between Part 1 and Part 2, we need to determine which part the nth term falls into. For that, we can use modular arithmetic:

If n mod 5 is less than or equal to 5, then the nth term is from Part 1.

If n mod 5 is greater than 5, then the nth term is from Part 2.

Let's calculate a few terms to illustrate this:

For n = 1, the sequence starts with -3, so the 1st term is -3.

For n = 2, we are still in Part 1, so the 2nd term is 0.

For n = 3, Part 1 continues, so the 3rd term is 5.

For n = 4, we are still in Part 1, so the 4th term is 10.

For n = 5, Part 1 ends, and the 5th term is 25.

For n = 6, the sequence starts with 5 in Part 2, so the 6th term is 5.

For n = 7, Part 2 continues, so the 7th term is 20.

For n = 8, we are still in Part 2, so the 8th term is 35.

Based on this analysis, we can conclude that the nth term for the given sequence is:

If n mod 5 ≤ 5:

nth term = -3 + (n - 1) * 5

If n mod 5 > 5:

nth term = 5 + (n - 1) * 15

Therefore, depending on the value of n and the remainder when divided by 5, we can use the appropriate formula to calculate the nth term.

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Answer:

Plastic: 36%

Cardboard: 8%

Metal: 24%

Glass: 32%

Step-by-step explanation:

27 + 6 + 18 + 24 = 75 (there are 75 materials)

27 out of 75 is equal to: 36%

6 out of 75 is equal to: 8%

18 out of 75 is equal to: 24%

24 out of 75 is equal to: 32%

Please mark Brainliest if correct

Hope this helps!

Answer:

Plastic Containers: 36%

Cardboard Boxes: 8%

Metal Cans: 24%

Glass Jars: 32%

Step-by-step explanation:

Plastic Containers: \(\frac{27}{27+6+18+24} =\frac{27}{75} =\frac{36}{100}\) or 36%

Cardboard Boxes: \(\frac{6}{27+6+18+24} =\frac{6}{75} =\frac{8}{100}\) or 8%

Metal Cans: \(\frac{18}{27+6+18+24} =\frac{18}{75} =\frac{24}{100}\) or 24%

Glass Jars: \(\frac{24}{27+6+18+24} =\frac{24}{75} =\frac{32}{100}\) or 32%

The amount the women would pay for 2.4 kg of chicken and 2 kg of meat in total is $15.2

The meaning of unit price is a price quoted in terms of so much per agreed or standard unit of product or service

Given that, a woman bought 1.8 kg of chicken and 1.6 kg of meat. The chicken cost $5.40 and the meat cost $6.40,

We need to find, if she had bought 2.4 kg of chicken and 2 kg of meat, how much would she have had to pay,

To find the same, we will first find the unit price of each,

Unit price = total price / total quantity

Since, 1.8 kg of chicken costs $5.40,

Therefore, 1 kg will cost = 5.40 / 1.8 = $3

Similarly,

If 1.6 kg of meat costs $6.40,

Therefore, 1 kg will cost = 6.40 / 1.6 = $4

Now, to find the cost of 2.4 kg of chicken and 2 kg of meat, we will multiply the unit prices to the required quantities,

Therefore,

2.4 kg of chicken will cost = 2.4 x 3 = $7.2

2 kg of meat will cost = 2 x 4 = $8

In total, she had to pay = 8+7.2 = $15.2

Hence, the amount the women would pay for 2.4 kg of chicken and 2 kg of meat in total is $15.2

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