Mathematics High School

Find the value of x.

Find The Value Of X.

Answers

Answer 1

in this problem x equals 10

Step-by-step explanation:

jd

Answer 2

Answer:

13

Step-by-step explanation:

Related Questions

Find a counterexample to show that the given conjecture is false:

The sum of two positive even integers is always an odd integer.

Answers

Answer:

20 + 16 = 36

Step-by-step explanation:

The conjecture: "The sum of two positive even integers is always an odd integer" can be easily be proven false with a counterexample.

Pick A=20 and B=16, both are positive even integers.

The sum of both A + B = 36 is an even integer. This is a counterexample because being even is the contrary of being odd.

Counterexample: 20 + 16 = 36

In fact, the conjecture is always false, since there cannot be found any pair of positive integers whose sum is odd.

Other possible counterexamples are:

10 + 8, 700 + 40, 12 + 14, etc.

7+7 please help me i need help quick right away

Answers

Answer:

very funny and 14

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

7 plus 7? how old are you?

All shirts are the same price. Which deal is cheaper per shirt?
A) Buy 2 shirts and get 25% off.
B) Buy 3 shirts and save 30%.

Answers

Answer:

The answer of this question is option A

Let’s say each shirt is $10.

If I buy 2 shirts for $20 and get 25% off, I will have spent $15. This would come out to $7.50 per shirt.

If I buy 3 shirts for $30 and get 30% off, i will have spent $21. Which is $7 per shirt.

The answer is option B

un icosagono es un poligono que contiene 20 lados, cuantas diagonales se pueden trazar desde todos sud vertices si cada lado mide 15cm y su area es 900cm2?

Answers

Answer:

El número de diagonales de un icoságono = 170 diagonales

Step-by-step explanation:

Los parámetros dados son;

El número de lados del polígono = 20

La longitud de cada lado = 15 cm.

El área del polígono = 900 cm²

La fórmula para encontrar el número de diagonales, ∑D, de un polígono de n lados se presenta como sigue;

Número de diagonales, ∑D = n (n - 3) / 2

Por lo tanto, el número de diagonales de un icoságono (20 lados) ∑D (20) es;

∑D (20) = 20 × (20 - 3) / 2 = 170 diagonales.

Se pueden trazar 170 diagonales en un icoságono.

Matemáticamente, es posible determinar la cantidad de diagonales en función del cantidad de lados del polígono a través de la siguiente fórmula:

[tex]d = \frac{n\cdot (n-3)}{2}[/tex] (1)

Donde:

[tex]d[/tex] - Cantidad de diagonales.[tex]n[/tex] - Cantidad de lados.

Si sabemos que [tex]n = 20[/tex], entonces la cantidad de diagonales del icoságono es:

[tex]d = \frac{20\cdot (20-3)}{2}[/tex]

[tex]d = 170[/tex]

Se pueden trazar 170 diagonales en un icoságono.

Invitamos cordialmente a ver esta pregunta sobre polígonos: https://brainly.com/question/10956189

help i need help with pre-algebra

Answers

This is the answer key it should help you

HELP WILL MARK YOU BRAINLIEST NO GUESSES PLZ!!!!

Answers

I got 2 : 3. You didn’t give answer choices but after you commented the answer choices I was able to determine that 2:3 is the answer.

Solve:
7 - 3(-9x + 3) = 11

Answers

x=13/27
explaination: hope this helped

The area of a rectangular painting is 5734cm^2
If the length of the painting is 94cm , what is its width?

Answers

Answer: 61cm

Step-by-step explanation:

So to work out this question you do 5734÷94 which would work out the with which is 61

61×94=5734

For anyone who had the similar question.

Answers

B, i just double checked!

A rhombus has 4 equal sides.
What is the order of rotational symmetry for a rhombus?

1
2
3
4

Answers

Answer:

B. 2

Step-by-step explanation:

Got Correct On MyPath.

The order of rotational symmetry for a rhombus is 2.

What is Polygon?

A polygon is a two-dimensional geometric figure that has a finite number of sides. The sides of a polygon are made of straight line segments connected to each other end to end

A rhombus is a special case of a parallelogram, and it is a four-sided quadrilateral.

In a rhombus, opposite sides are parallel and the opposite angles are equal.

All the sides of a rhombus are equal in length, and the diagonals bisect each other at right angles

Rotational Symmetry of a Rhombus has four equal sides but of varying angles.

A rhombus has two lines of symmetry (vertical and horizontal), an order of two, and the angle of rotation of 180 degrees

Hence,  the order of rotational symmetry for a rhombus is 2.

To learn more on Polygons click:

https://brainly.com/question/24464711

#SPJ2

Select the correct answer.
Which complex number is equivalent to the given expression?
(2 + i)(8 – 3i) – (23 + 34i)

Answers

Answer:

-47

Step-by-step explanation:

Answer:

-4 - 32i

Step-by-step explanation:

Got it right on the test

Fahrenheit 451

Write a paragraph on the imagery' from this text with evidence, as well as a second paragraph for the mood.

Answers

Answer:

mark above answer BRILLIANT

NEED HELP PLEASE IM BEGGING YOU PLEASE!!!!!
NEED HELP WITH BOTH PLEASE

Answers

Answer:

14) F

15) D

Step-by-step explanation:

14

You have 80 minutes on a CD, minus the time you burned would equal the time you have left on the CD.

15

To find mark down, you multiply the percentage to the original price, and then subtract the answer to the original price.

Scientific notation
Express this number in scientific notation.
245,600,000,000

​

Answers

Answer: 2.456  x 10 to the power 11

Step-by-step explanation: Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Answer:

2.456  x 10 to the power 11

Step-by-step explanation:

Can someone answer this?

Answers

Answer:

y = 1500 + 800x

Step-by-step explanation:

This is the answer because Elisa charges 1500 dollars no matter what. That value is not dependant on anything. Every hour she is with the client is 800 dollars. That is why it is represented as 800x. X being the amount of hours. You add the two together to find how much Elisa's services cost.

Which of the following is both a perfect square and a perfect cube?
64
16
81
1,000

I know the answer is 64, but how? Can someone please explain me to me how to work this out?

Answers

Well the square root of 64 is 8, and the cube root of 64 is 4. They’re perfect whole numbers. We know 4 x 4 = 16 is a square from the fact above, and also because of what a square means. But we can go one step further. 4 x 16 = 64 is the product of two squares, so it is also a square. But you can also write it as 64 = 4 x 4 x 4, making it a cube.

Someone pls help me.

Answers

identity property in multiplication goes to the second option

commutative property goes to the first option

identity property in addition goes to the last option

associative property goes to the fourth option

distributive property goes to the third option

I may have gotten some wrong , if I did I am very sorry,if i didnt get any wrong, then I hoped this helped!

What is y +3 = 7(2 – 2) written in standard form?
Choose 1 answer: :
А)
-7x +y = -5
B
y=73 – 5
С
y = 7x – 17
– 7x + y = -17

Answers

Answer:

C)

Step-by-step explanation:

y+3=7x+7•−2

Multiply 7 by −2.

y+3=7x−14

Rewrite the equation with the sides flipped.

7

x

−

14

=

y

+

3

The heights of six students Aaron, Betty, Carrie, Dan, Evelyn and Frank are 58 inches, 60 inches, 63 inches, 64 inches, 68 inches and 69 inches. Carrie is 4 inches shorter than Aaron. The girls (Betty, Carrie and Evelyn) are the three shortest students. Dan is one inch shorter than Frank. Betty is the shortest student. What is the sum of Frank’s height and Evelyn’s height, in inches?

Answers

Answer: 132

Step-by-step explanation: I think it is 132 because C + 4 = A, D + 1 = F, and B is shortest. so the order is FDAECB with Frank at 69 and Evelyn at 63. Carrie has to be at 60 because Aaron, who is 64, is 4 inches taller than Carrie. So, when you add 69 and 63 together, you get 132. Also just to check, Dan, who is 68, is one inch shorter than Frank, who is the tallest. This is only true because the girls are the youngest.

Answer:

132

Step-by-step explanation:

I did it on a Mathcounts competition

Do #1 a-f please 15 points

Answers

Answer:

1a  expression

1b equation

1c equation

1d expression

1e expression

1f equation

Step-by-step explanation:

Equations have an equals sign, while expressions do not.

1a  expression

1b equation

1c equation

1d expression

1e expression

1f equation

Answer:

A Expression B Equation 2 1/4 C Equation 3 2/3 D Expression E Expression F Equation  

Step-by-step explanation:


What is the length of DE?
2.9 units
7.2 units
12.5 units

Answers

Answer:

7.2 units

Step-by-step explanation:

Estimate and Guess

We know that it cannot be 2.9 units long, because it slanted is 6 units long. The closest value to that is 7.2 units.

Answer: 7.2 units

PLZ ANSWER THIS QUICK! THANK U!!

Answers

There is 33 students in the class

Heeeeeeeeelp plssssssssssss

Answers

E and a are the same

Answer:

A and E

Step-by-step explanation:

This is an example of the distributive property.

28n-25 is the base

E shows 7(4n-5)

7*4=28=28n

7*5=35

7(4n-5)=28n-35

The temperature at 8 p.m. was 6 degrees. at 2 p.m. the temperature decreased 13 degrees. What was the temperature at 2 a.m.?

Answers

Step-by-step explanation:

Given parameters:

    Temperature at 8pm = 6°C

    Temperature at 2am = decreased by 13°C

Unknown:

Temperature at 2am

Solution:

Since this is a temperature decrease problem, the temperature at 2am should be lesser.

 Temperature at 2am = Temperature at 8pm - Temperature decrease

                                    = 6°C - 13°C

                                     = -7°C

2(7y−1)= 40 what is y?

Answers

Step-by-step explanation:

[tex]14y - 2 = 40 > > 14y = 42 > > y = 3[/tex]

Answer:

y=3

Step-by-step explanation:

Remember PEMDAS

Pleaseeeeeeeeeeeeeeeee solve this

Answers

Answer:

x=25

Step-by-step explanation:

All angles in a triangle add up to 180°, so add all the angles together

(2x+15)+(x+10)+(3x+5)=6x+30

So that means... 6x+30=180°

Get rid of the 30, so... 180-30=150

6x=150°

Divide each by 6

6x/6=x

150/6=25

x=25

Sorry if that was hard to understand!!

please help ASAP!!!! will give brainiest!!!

Answers

Answer:49ft

Step-by-step explanation:

PLZ HELP QUICK THANKS!

Answers

Answer:

L = [tex]5 \frac{1}{6} cm = \frac{31}{6} [/tex] cm

B = [tex]2 \frac{2}{7}cm = \frac{16}{7} [/tex]cm

Area = [tex] \frac{31}{6} cm \times \frac{16}{7}cm = \frac{496}{42}cm^{2} [/tex]

[tex]11 \frac{34}{42}cm^{2} [/tex]

[tex] = 11\frac{17}{21}cm^{2} [/tex]

A man can type 21 words per minutes. how long will it take him to type 3780 words
​

Answers

1min= 21 words
3780 divided by 21=180

Whoever can help me 1st I will mark the brain liest​

Answers

A is 163 and C is 143

Other Questions
Create an interface called Runner. The interface has an abstract method called run() that displays a message describing the meaning of run to the class. Create classes called Machine, Athlete, and PoliticalCandidate that all implement Runner. The run() should print the following in each class: Machine - When a machine is running, it is operating. Athlete - An athlete might run in a race, or in a game like soccer. PoliticalCandidate - A political candidate runs for office. ---------------------------------------------------------------------------------------------------- public class Athlete implements Runner { public void run() { // write your code here } } -------------------------------------------------------------------------------------- public class DemoRunners { public static void main(String[] args) { Machine runner1 = new Machine(); Athlete runner2 = new Athlete(); PoliticalCandidate runner3 = new PoliticalCandidate(); runner1.run(); runner2.run(); runner3.run(); } } ------------------------------------------------------------------------------------------ public class Machine implements Runner { public void run() { // write your code here } } ---------------------------------------------------------------------------------------------------- public class PoliticalCandidate implements Runner { public void run() { // write your code here } } ---------------------------------------------------------------------------------------------------- public interface Runner { // write your code here } ---------------------------------------------------------------------------------------------------- Tammy rents an apartment close to her school campus. 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