Simplify.

(2x^2-5x+3) - (-x^2+4x-5)

Answer:

1616626178188391991

Answer:

Do you mean 103 or 10^3?

Answer:

Step-by-step explanation:

200 = 10^2 x 2

3 x (10 root 2)

= 30 root 2

= 42.42640687

*root = √

I hope this helped you!

Answer:

D

Step-by-step explanation:

The two lines marked with the pink arrow means that they're parallel, which means the other lines connecting them are the transversals. Because the set of angles listed in D are opposite sides of each transversal and inside of the parallel lines, it makes the most sense.

Answer:

1) biased sample

2) random sampling

Step-by-step explanation:

Since the results are based on feedback of students in only one class, it's not a good representative of the entire student body.

Also, since it's a math class there will be a bias.

Better method would be randomly selecting students from the entire school students list and take their feedback

Final answer:

To construct an equilateral triangle inscribed in a circle, the correct steps are to construct two diameters using the points where the arc intersects the circle and the center, and then connect the endpoints of the two diameters.

Explanation:

The correct step used in the construction of an equilateral triangle inscribed in a circle is to construct two diameters using the points where the arc intersects the circle and the center. This will create a cross shape inside the circle. Then, you connect the endpoints of the two diameters to form the equilateral triangle. This is because the lengths of the radii of the circle are equal, and connecting the points where the arc intersects the circle with the center creates two congruent radii.

Answer:

114.5 in³

Step-by-step explanation:

Volume of cone:

⅓ × 3.14 × 8² × 12

= 803.84 cm³

Volume of hemisphere:

⅔ × 3.14 × 8³

= 1071.786667 cm³

Total = 803.84 + 1071.786667

= 1875.626667 cm³

1 cm = 0.393701 inches

1 cm³ = 0.393701³ inches

Volume in in³:

1875.786667/0.393701³

= 114.4579471 in³

Answer:

The answer is option 4.

Step-by-step explanation:

It is given that the diameter of a wheel is 622 mm so in order to find its radius you have to divide it by 2 :

diameter = 622 mm

radius = 622 ÷ 2

= 311 mm

Next you have to use the formula of circumference of circle, C = 2×π×r where r represents radius :

Let π be 3.14,

Let r be 311 mm,

C = 2×3.14×311

= 1953.08 mm

Answer:

4th option (D.)

Step-by-step explanation:

got it right on edg 2020

Answer: 7

Step-by-step explanation:

The relationship between the temperature of the substance and the time it has been heated is that it heats up two more degrees every minute and started out as 40 degrees.

An equation is an expression that shows the relationship between two or more numbers and variables.

We have been given that Paul wrote the equation t=2m+40 to represent the temperature, t, in degrees Celsius. after a substance had been heated for m minutes. ​

Then we can see that it heats up two more degrees every minute and started out as 40 degrees..

The relationship between the temperature of the substance and the time it has been heated is that it heats up two more degrees every minute and started out as 40 degrees.

Learn more about equations here;

https://brainly.com/question/25180086

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Answer:

mean: 3.2 standard deviation: 1.4

Step-by-step explanation:

its correct

The mean number of males selected each month is 3.2, and the standard deviation is approximately 1.4 males.

The student's question is about finding the mean and standard deviation of the number of males selected each month to have lunch with the CEO in a division of a company. Given that 40% of the employees are male, we can determine the mean number of males selected for the lunch by multiplying the percentage of males by the number of employees selected each month, this is known as the expected value, E(X) = np. Since 40% of over 200 employees are male, we assume we have at least 80 males (0.40 x 200) in the division. If 8 employees are selected at random, the mean number of males expected, μ, would be 40% of 8, or 3.2 males.

To find the standard deviation, σ, we use the formula for the standard deviation of a binomial distribution, which is σ = sqrt(np(1-p)), where p is the probability of choosing a male (0.40) and n is the total number selected (8). In this case, the standard deviation is σ = sqrt((8)(0.40)(0.60)) and rounding to the nearest tenth gives us σ ≈ 1.4.

The angles are alternate interior angles, and they are congruent. Therefore, we can set the values equal to each other and solve for x.

15x + 5 = 140

15x = 135

x = 9

Hope this helps!! :)

Answer:

x = 9

Step-by-step explanation:

15x + 5 = 140

(Alternate exterior angles)

15x = 135

x = 9

Answer:

0

Step-by-step explanation:

The answer is 0. It shows up the most on the list. Also I know the awful Khan Academy brought you here.

The most frequent number of children in household is given by the mode and M = 0

The mode in statistics refers to a number in a set of numbers that appears the most often. Place all numbers in a given set in order; this can be from lowest to highest or highest to lowest, and then count how many times each number appears in the set. There are two types of modes

Multimodal and Bimodal

Given data ,

To find the most frequent number of children in a household in Cam's neighborhood, we can use a frequency table to count how many times each number appears in the data set:

A = 0, 0, 2, 1, 2, 8, 3, 0, 0

From the frequency table, we can see that the most frequent number of children in a household is 0, which appears 3 times in the data set.

And , the mode of the data set is M = 0

Therefore, the most frequent number of children in a household in Cam's neighborhood is 0.

Hence , the mode M = 0

To learn more about mode click :

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The value of x cannot be determined from the given information.

To find the value of x, we need to have more information about the problem. The given information, mAB = 46° and mCD = 25°, does not directly provide a relationship between x and those angles. Therefore, the value of x cannot be determined from the given information.

https://brainly.com/question/33062035

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Answer:

5/168

Step-by-step explanation:

Probability is the likelihood or chance that an event will occur.

Probability = Expected outcome/Total outcome.

According to the question, if the bag contains 5 red raffle tickets, 7 blue raffle tickets and 2 green raffle tickets, the total number of ticket is given as:

5+7+2 = 14tickets

The total outcome = 14.

If Jackie selects a green ticket on her first two selections, the probability of selecting a green twice from the bag and replacing it will be 2/14×2/14 = 4/48.

Note that the total number of ticket remains complete each time she selects since the ticket was always REPLACED.

If Jackie picks a red on her third selection, the probability of picking a red will be 5/14.

The probability that she selects a green ticket on her first two selections and a red ticket on her third selection will then be:

= 4/48 × 5/14

= 1/12×5/14

= 5/168

Answer:

5/686

Step-by-step explanation:

Red raffle tickets=5

Blue raffle tickets=7

Green raffle tickets= 2

Total raffle tickets=14

Three tickets were selected randomly with replacement

Probability of selecting Green tickets on her first two selections and red tickets on her third selection =propability of selecting Green raffle tickets twice and red raffle tickets once

=2/14×2/14×5/14

=1/7×1/7×5/14

=1/49×5/14

=5/686

Note: There are two green tickets and since it is selected with replacement, the total green tickets and the total raffle tickets doesn't change.

Answer:

B. Median is greater than the mean and the majority of data points are to the right of the mean.

Step-by-step explanation:

Mean = sum(x × p(x))

= (1×0.1)+(2×0.15)+(3×0.2)+(4×0.45)+(5×0.1)

= 3.3

Probability of more than 3.3 is:

0.45 + 0.1 = 0.55 > 0.5

Answer:

Its B on edge :)

Step-by-step explanation:

good luck <3

Answer:

Its 7 hope i helped

Step-by-step explanation:

I think this question is -2 times -8 pls tell me if thats wrong but the answer would be 16. PLs mark me as brainliest.

Answer:

I believe it is 2 so X=2

Answer:

1297.37 feet.

Step-by-step explanation:

Given:

The carousel at a local theme park has a diameter of 32 feet.

Each ride last three minutes and the speed of the carousel is 4.3 revolutions per minute.

Question asked:

What is the maximum distance riders travel in one full ride? Round to the nearest hundredth.

Solution:

First of all we will find the radius of the carousel:-

Diameter = 32 feet

Radius, r = [tex]\frac{Diameter}{2} =\frac{32}{2} =16\ feet[/tex]

Now, we will find distance covered by the carousel in one ride that means its circumference;

[tex]Circumference\ of \ the \ circle=2\pi r[/tex]

                                               [tex]=2\times\frac{22}{7} \times16\\ \\ =\frac{704}{7} \\ \\ =100.571\ feet[/tex]

In 1 minute, number of revolution taken by carousel = 4.3

As each ride last for 3 minutes:-

In 3 minutes, number of revolution taken by carousel = 3 [tex]\times[/tex] 4.3 = 12.9

In 1 revolution, distance covered by carousel = 100.571 feet

In 12.9 revolution, distance covered by carousel = 100.571  [tex]\times[/tex] 12.9

                                                                                 = 1297.365 feet

Thus, the maximum distance riders travel in one full ride is 1297.37 feet.

Answer:

1297.37 feet

Step-by-step explanation:

took test

Answer: 390

Step-by-step explanation:

Answer:

340

Step-by-step explanation:

with every number 0-4 stays with the 10's group that it was in to begin with. and numbers past that go to the next 10's group. so for this question you have 385. you have to move the 5 to a 10. therefor you have 390

Step-by-step explanation:

[tex] \because \: {a}^{m} \times {a}^{n} = {a}^{m + n} \\ \\ \therefore \: {3}^{5} \times {3}^{2} = {3}^{5 + 3} = {3}^{8} = 6,561 \\ [/tex]

Answer:

a=0

Step-by-step explanation:

Answer: A= 512x^3+2x

Step-by-step explanation:

Cube the x and 8 then add -2x to both sides leaving A alone.

Answer:

b

Step-by-step explanation:

Answer:

the answer is C,2^6×3^3

Step-by-step explanation:

6^3×2^6/2^3

=6^3×2^6-^3

=6^3×2^3

=2^6×2^3

Answer:

The answer is B and C

Step-by-step explanation:

The correct answers on plato

Answer:

your answer is 32,768

Step-by-step explanation:

Thats 8 to the 6th power divided by 8

8^6=262,144 divide that by 8 and u get 32,768

Hope this helps

Answer:b

Step-by-step explanation:

Answer:

(B)Sammi made a mistake in Step 2 because he chose a title without knowing if the table represents the number of hours read per week.

Step-by-step explanation:

please mark brainliest

or i d k just bye bye

Answer:

7 3/4 + 1 3/4 - 3 5/6 = 4 + 3/4 + 3/4 + 1/6

Step-by-step explanation:

7 3/4 + 1 3/4 - 3 5/6

we do not want the minus sign.

7 3/4 + 1 3/4 - 3 5/6 = 7 3/4 + 1 3/4 - 3  -   5/6

7 3/4 + 1 3/4 - 3 5/6 =  7+  3/4 + 1 +  3/4 - 3  -  5/6

7 3/4 + 1 3/4 - 3 5/6 = 7 + 1 - 3 + 3/4 + 3/4 - 5/6

7 3/4 + 1 3/4 - 3 5/6 = 5 + 3/4 + 3/4 - 5/6

7 3/4 + 1 3/4 - 3 5/6 = 4 + 3/4 + 3/4 + 1 - 5/6

7 3/4 + 1 3/4 - 3 5/6 = 4 + 3/4 + 3/4 + 1/6

To rewrite the expression 7 3/4 + 1 3/4 - 3 5/6 using addition instead of subtraction, we can change the sign of the subtraction term and find the common denominator to add the fractions.

To rewrite the expression 7 3/4 + 1 3/4 - 3 5/6 using addition instead of subtraction, we can change the subtraction to addition by changing the sign of the second term. So the expression becomes:

7 3/4 + 1 3/4 + (-3 5/6)

Now, to add fractions with different denominators, we need to find the common denominator. In this case, the common denominator is 12.

Converting all the fractions to have a denominator of 12, we get:

7 9/12 + 1 9/12 + (-3 10/12)

Adding the numerators, we have:

7 + 9 + 1 + 9 - 3 - 10 = 13

So the expression 7 3/4 + 1 3/4 - 3 5/6, using addition instead of subtraction, is equal to 13.

Answer: 125,000 BTUs

Step-by-step explanation:

Hi, to answer this question we have to apply proportions:

A fuel tank has a volume of 36 gallons. When filled with biodiesel, it provides 4,500,000 BTUs

So, the proportion is:

36 gallons / 4,500,000 BTUs

For 1 gallon  

1 gallon / x BTUs

36/4,500,000 = 1/x

Solving for x:

x = 1 / (36/4,500,000)

x = 125,000 BTUs

Feel free to ask for more if needed or if you did not understand something.

Look at the attached picture⤴⤴⤴

Hope this will help u...

Answer: (x-1)(x-3)

Step-by-step explanation:

X2-4x+3

Factorise

Factors of +3 that will give -4 is -3&-1

Substitute

X2-3x-x+3

X(x-3)-1(x-3)

(X-1)(x-3)