PLEASE HELP!!!!!!
Marina is Heating a solution in the chemistry lab. The temperature of the solution starts at 20 degrees Celsius . she turned on the burner and find septic Solutions temperature increases by 3° Celsius every minute this graph shows the temperature change.

A. (2,24)

B. ( 26,4)

C. (1,20)

D. (4, 32)​

Answer:

The answer should be about 114.

Step-by-step explanation:

Of you look at the shape of the other angles. B and D seem to be about 90 and the shape of A is just a little bit bigger than ninety. I started by adding 78, 90, and 90 together which gave me 246. Then I subtracted 246 from 360 which gave me 114. I had estimated the answer to be around 110.

Answer:

The answer is term

Step-by-step explanation:

Glad i could help

Therefore, 16 men can dig the same hole in 6 days.

Answer:

it must be 21

Step-by-step explanation:

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The three angles opposite the three equal sides are equal in size because the three sides are equal.

Given,

An equilateral triangle in geometry is a triangle with equally long sides. The three angles opposite the three equal sides are equal in size because the three sides are equal. It is also known as an equiangular triangle since each angle is 60 degrees.

A right-angled triangle has one angle that is 90 degrees, thus if we define an equilateral triangle as having all angles that are 90 degrees, their sum would be 270 degrees, which is not conceivable because the sum of all the angles in a triangle is 180 degrees.

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Answer:

A = 2, B = 3 and C = 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

2x + 3y = 2 ( subtract 2x from both sides )

3y = - 2x + 2 ( divide all terms by 3 )

y = - \(\frac{2}{3}\) x + \(\frac{2}{3}\) ← in slope- intercept form

with slope m = - \(\frac{2}{3}\)

Parallel lines have equal slopes, thus

y = - \(\frac{2}{3}\) x + c ← is the partial equation

To find c substitute (2, 0) into the partial equation

0 = - \(\frac{4}{3}\) + c ⇒ c = \(\frac{4}{3}\)

y = - \(\frac{2}{3}\) x + \(\frac{4}{3}\) ← in slope- intercept form

Multiply through by 3

3y = - 2x + 4 ( add 2x to both sides )

2x + 3y = 4 ← in standard form

with A = 2, B = 3 and C = 4

Answer:

(4,0)

Step-by-step explanation:

Solve for x so 2x - 3x = -4 then -x = -4 so x = 4

Answer:

  (a)  A is steeper; 4/5 > 2/5

Step-by-step explanation:

The slope of A is the coefficient of x, so is 4/5. This eliminates choices B and D.

The line in the graph has a rise of 2 units for each run of 5 units, so has a slope of ...

  slope = rise/run = 2/5

This eliminates choice C.

The correct description of the relationship is the first one:

  Equation A has a steeper slope, because 4/5 is greater than 2/5.

To construct the probability distribution chart for the random variable X = the number of geometry sets given out on December 1, we need to consider the possible values for X (0, 1, 2, 3, 4, 5) and calculate their corresponding probabilities.

The total number of gifts given out each day is 5, so the maximum number of geometry sets that can be given out is also 5.

The probability distribution chart for X is as follows:

X (Number of Geometry Sets) Probability (P(X))

0 0/5 = 0

1 1/5 = 0.2

2 2/5 = 0.4

3 2/5 = 0.4

4 0/5 = 0

5 0/5 = 0

b) The expected number of calculators given out on December 1st can be calculated by multiplying the probability of each possible outcome by the corresponding number of calculators.

The possible outcomes for the number of calculators given out on December 1st are 0, 1, 2, 3, 4, or 5. However, we know that the maximum number of calculators available is 9.

The expected number of calculators given out on December 1st can be calculated as:

(0 * P(X = 0)) + (1 * P(X = 1)) + (2 * P(X = 2)) + (3 * P(X = 3)) + (4 * P(X = 4)) + (5 * P(X = 5))

Substituting the corresponding probabilities from the probability distribution chart, we get:

(0 * 0) + (1 * 0.2) + (2 * 0.4) + (3 * 0.4) + (4 * 0) + (5 * 0) = 0 + 0.2 + 0.8 + 1.2 + 0 + 0 = 2

Therefore, the expected number of calculators given out on December 1st is 2.

c) To find the probability that there will be at least 2 mechanical pencils given out on December 1st, we need to calculate the probability of having 2, 3, 4, or 5 mechanical pencils.

From the probability distribution chart, we can see that the probability of having 2 mechanical pencils is 2/5 (P(X = 2)). The probability of having 3 mechanical pencils is also 2/5 (P(X = 3)).

To find the probability of at least 2 mechanical pencils, we sum these probabilities:

P(X >= 2) = P(X = 2) + P(X = 3) = 2/5 + 2/5 = 4/5

Therefore, the probability that there will be at least 2 mechanical pencils given out on December 1st is 4/5 or 0.8.

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The answer is: Mean (μ) = 140

Given that 80% of federal government employees use e-mail, the probability of selecting an employee who uses e-mail is 0.80. And, the probability of not selecting an employee who uses e-mail is 0.20.The sample size of federal government employees is 175.Part 1 of 2: To find the mean of the number of federal government employees who use e-mail, multiply the probability of selecting an employee who uses e-mail by the sample size. Mean (μ) = npwhere, n = sample sizep = probability of success (use e-mail)= 0.80μ = np= 175 × 0.80= 140Therefore, the mean is 140.Therefore, the answer is: Mean (μ) = 140.

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Answer:

Step-by-step explanation:

#3 D

#4 c

Answer:

1. D

2. C

Step-by-step explanation:

I used a ✨calculator✨

Answer:

\(Area = 216\pi\)

Step-by-step explanation:

Given

See attachment for semicircles

Required

The area of the paper

First, calculate the area of each petal.

The petal is made up of:

1. Semicircle of diameter 12cm

2. Semicircle of diameter 18cm (i.e. 12cm + 6cm)

3. A hole semicircle of diameter 6cm

The area of each semicircle is calculated as follows:

\(Area = \frac{\pi r^2}{2}\)

For (1):

\(d = 12cm\) --- diameter

\(r = 0.5 * d = 0.5* 12cm = 6cm\) --- radius

So:

\(A_1 = \frac{\pi * 6^2}{2}\)

Evaluate the exponent

\(A_1 = \frac{\pi * 36}{2}\)

Divide 36 by 2

\(A_1 = 18\pi\)

For (2):

\(d = 18cm\)

\(r = 0.5* 18cm = 9cm\)

So:

\(A_2 = \frac{\pi * 9^2}{2}\)

\(A_2 = \frac{\pi * 81}{2}\)

\(A_2 = 40.5\pi\)

For (3):

\(d = 6cm\)

\(r = 0.5* 6cm = 3cm\)

So:

\(A_3 = \frac{\pi * 3^2}{2}\)

\(A_3 = \frac{\pi * 9}{2}\)

\(A_3 = 4.5\pi\)

Recall that (3) is a hole.

So, the area (A) of a petal is:

\(A = A_1 + A_2 - A_3\)

\(A = 18\pi + 40.5\pi - 4.5\pi\)

\(A = 54\pi\)

The paper uses 4 petals.

So:

\(Area = 4 * A\)

\(Area = 4 * 54\pi\)

\(Area = 216\pi\)

1) The sequence S is: 9, 12, 15, 18.

2) The types of sequences are:

a) Sequence a is increasing.

b) Sequence 200, 130, 130, 90, 90, 43, 43, 20 is non-decreasing.

1) The sequence S is defined as sn = 3n + 3 * 2. To find the values of S, we can substitute different values of n into the equation:

S1 = 3(1) + 3 * 2 = 3 + 6 = 9

S2 = 3(2) + 3 * 2 = 6 + 6 = 12

S3 = 3(3) + 3 * 2 = 9 + 6 = 15

S4 = 3(4) + 3 * 2 = 12 + 6 = 18

So, the sequence S is: 9, 12, 15, 18.

2) Let's determine the type of the sequences:

a) Sequence a = 2/1, 131.

- This sequence is increasing since the terms are getting larger.

b) Sequence 200, 130, 130, 90, 90, 43, 43, 20.

- This sequence is non-decreasing since the terms are either increasing or staying the same (repeated).

To summarize:

a) Sequence a is increasing.

b) Sequence 200, 130, 130, 90, 90, 43, 43, 20 is non-decreasing.

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The number d is not a divisor of the integers 400, 366 and 213

The least possible value of d is 17

The numbers are given as:

400, 366 and 213

The divisor is given as: d

Where d > 1

To determine the least possible value of d, we make use of the following Python program, where comments are used to explain each action.

#This iterates from 2 to the smallest number of the three divisors

for d in range(2,213):

   #This checks for the common remainder

   if(400%d == 366%d) and (400%d == 213%d):

       #This prints the value of d, when the smallest remainder of all three integers is determined

       print(d)

At the end of the program, the output is 17

Hence, the least possible value of d is 17

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The Length of the conjugate axis is equal to 2b. The transverse axis is an essential feature of a hyperbola, as it determines the overall shape of the hyperbola.

In a hyperbola, the name of the green segment is called the transverse axis. The transverse axis is the longest distance between any two points on the hyperbola, and it passes through the center of the hyperbola. It divides the hyperbola into two separate parts called branches.

The transverse axis of a hyperbola lies along the major axis, which is perpendicular to the minor axis. Therefore, it is also sometimes called the major axis.

The other axis of a hyperbola is called the conjugate axis or minor axis. It is perpendicular to the transverse axis and passes through the center of the hyperbola. The length of the conjugate axis is usually shorter than the transverse axis.In the hyperbola above, the green segment is the transverse axis, and it is represented by the letters "2a". Therefore, the length of the transverse axis is equal to 2a.

The blue segment is the conjugate axis, and it is represented by the letters "2b".

Therefore, the length of the conjugate axis is equal to 2b.The transverse axis is an essential feature of a hyperbola, as it determines the overall shape of the hyperbola. In particular, the distance between the two branches of the hyperbola is determined by the length of the transverse axis.

If the transverse axis is longer, then the branches of the hyperbola will be further apart, and the hyperbola will look more stretched out. Conversely, if the transverse axis is shorter, then the branches of the hyperbola will be closer together, and the hyperbola will look more compressed.

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Answer:

Therefore the circumference of the circle is greater than the perimeter of the square

Answer:

at least 17 sales

Step-by-step explanation:

On Wednesday she wants to earn 128.

Per day value = 60

128-60=68

She still needs to earn 68.

68 divided by 4=The number of sales needed to get 68 dollars=17

Thus she needs to make at least 17 sales, at most means maximum but she wants to earn AT LEAST 128 which means she wants more thus, answer is 4th option.

When a sample has the same characteristics as the target population, the sample is said to be a representative sample.

When a sample has the same characteristics as the target population, the sample is said to be a representative sample.

Let's take a look at this definition in more detail below:

A representative sample is a sample that adequately represents the population, which is selected randomly, so that each member of the population has an equal chance of being included. A representative sample should have the same characteristics of the population it represents.

To get a representative sample, researchers must select participants randomly. A representative sample has the same distribution of variables as the population in which it was derived. It is generally believed that a representative sample is necessary for generalizing the results to the population

Therefore, the results obtained from a representative sample can be generalized to the larger population.In a nutshell, a representative sample is a sample that represents the population from which it was selected. It should have similar characteristics to the population from which it was drawn.

A representative sample is a necessary prerequisite for generalizing the results to the larger population. It ensures the accuracy of the study and the validity of the results obtained. The sample size should be large enough to provide adequate statistical power and enable the results to be generalized to the population.

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To estimate the sample size, we can use the formula:

n = (z*sigma / E)^2

where:

z = z-score corresponding to the desired confidence level (in this case, 98% confidence level corresponds to a z-score of 2.33)

sigma = estimated standard deviation (given as $5.1)

E = maximum margin of error (given as $2)

Plugging in the values, we get:

n = (2.33*5.1 / 2)^2 = 68.89

Rounding up to the nearest whole number, we get a sample size of n = 69. Therefore, we need a sample size of at least 69 to estimate the mean amount spent by customers at the local gas station with 98% confidence and a margin of error of no more than $2.

7889 grams of jam

Step-by-step explanation:

In 5544 grams of jam, 1757 grams of sugar ==> 31.69%

let x be the grams of jam

2500 grams of sugar ==> 31.69%

x grams of jam ==> 100%

\(x \times 31.69\% = 2500 \\ x = 2500 \div 31.69\% \\ x = 7888.92 \: grams \\ x = 7889 \: grams \: (nearest \: whole \: number)\)

Answer:

A graph has time ont the x-axis and height on the y-axis

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

27,804

Step-by-step explanation:

28x993= 27,804

Answer:

$210.25

Step-by-step explanation:

The class width for a frequency distribution with 8 classes is approximately 3.75.

To determine the class width for a frequency distribution with 8 classes, we need to calculate the range of the data and divide it by the number of classes.

Given the data set: 29, 42, 21, 33, 35, 44, 20, 26, 34, 22, 35, 31, 14, 29, 26, 22, 30, 31, 15, 18, 19, 38, 24, 27, 25, 15, 24, 27, 26, 40.

To find the range, we subtract the lowest value from the highest value:

Range = Highest value - Lowest value

Range = 44 - 14

Range = 30

To calculate the class width, we divide the range by the number of classes:

Class Width = Range / Number of Classes

Class Width = 30 / 8

Class Width = 3.75

Therefore, the class width for a frequency distribution with 8 classes is approximately 3.75.

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The required number of ways after probability in which 5 distinguishable balls can be placed in 4 indistinguishable boxes is 35.

Given that there are 5 distinguishable balls and 4 indistinguishable boxes. We need to find the number of ways in which these balls can be placed in these boxes. To find the total number of ways in which we can place 5 distinguishable balls in 4 indistinguishable boxes, we have to use the concept of partitions of integers. But, the balls are distinguishable, so we have to count the number of permutations of these 5 balls. We know that the number of ways to partition a positive integer n into k positive integers is equal to the number of ways to partition n into exactly k positive integers. But, in this case, we have to partition 5 into at most 4 positive integers. Now, solving this expression by expanding the brackets and adding the coefficients of the terms up to \($x^5$\), we get:

\($(x^1+x^2+x^3+x^4)^4+\dots+(x^5)^4\\=(\frac{x^5-x}{x-1})^4+\dots+x^{20}-4x^{16}+10x^{12}-20x^8+35x^4-1$\)

Thus, the answer is $35$.

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