2/7k - 1/14k = -3 Please answer for k. Show all work


Answer 1
Answer: 2/7k−1/14k=−3Step 1: Simplify both sides of the equation.2/7k−1/14k=−32/7k+−1/14k=−3(2/7k+−1/14k)=−3(Combine Like Terms)3/14k=−3Step 2: Multiply both sides by 14/3.(14/3)*(3/14k)=(14/3)*(−3)

Related Questions


If B is the midpoint of ac and the length of ac is 23.8, what is the length of ab A. 11.7 B. 11.9 C. 12.4 D. 19.1



Option B:11.9

Step-by-step explanation:

We are given that B is the mid point of AC.

Length of AC=23.8 units

We have to find the length of AB.

We know that when B is the mid point of AC then



By using segment addition property

Let AB=x

Then , BC=x

Substitute the values then we get

Hence, length of AB=11.9 units

Option B is true.

Well, the midpoint simply means the point right half-way between both endpoints, thus is just half that or ab = 23.8/2.

neil has 1216 sports card that he divides into 32 packages with he same number of cards. how many cards are in each package?



1216/32= 38

I hope this helps!!


F(X)= 1/x-3,g(x)=3x+1/x A.use composition to prove whether or not the functions are inverses of each other the domain of the composition using internal notation



that is not basic math

Step-by-step explanation:

that or im dumb


Issac, BYU-Idaho student, found an old article in the school paper, the Scroll, that asserted that 11% of girls "wait for their missionary". Now that some years have passed and the missionary age limits have changed, and Isaac wants to revisit the question and would like to estimate what proportion of girls "wait for their missionary". If he is willing to accept a margin of error of 3%, and a 90% confidence level, how many observations does he need in his sample


Answer: 151

Step-by-step explanation:

When the prior estimate of population proportion is available , then the formula for sample size:  

, where p= prior estimate of population proportion

z*= critical-value.

E= Margin of  error.

Let p be the proportion of of girls "wait for their missionary".

p = 11% =0.11

E= ± 0.03

The critical z-value corresponding to 90% confidence level = z*=1.645 [using z-table ]

Substitute all the values in the above formula , we get

Required sample size  :

[Rounded to next integer.]

Thus, the number of observations he needs in his sample = 151


Write a number that is the same when rounded to the nearest hundred and ten


A number when you round to the nearest hundred and tens is the is is the number 200


Find the 10th term of the geometric sequence 3,6,12,24


It's 768. You're just multiplying each answer by two 10 times. 3x2=6 6x2=12 etc.

HURRY Given ​ f(x)=x^2−2x−5​. Enter the quadratic function in vertex form in the box.



Step-by-step explanation:

The given quadratic function is

We complete the square to obtain the vertex form;

Add and subtract half the coefficient of

Factor by identifying the perfect square

Simplify to obtain the vertex form as


there are 3200 students at Martinsville high school. there 575 students involved in athletics during the spring athletic seasons. what proportion best represents the percent of students not involved in athletics during the spring season? what percent of students is not involved in athletics?


3200- 575= 2625 students are not involved in athletics

the proportion is  2625/3200=525/640=105/128

The percent is 2625/32 %≈ 82 %
105/128 or 0.820313
Simplify 2625/3200

bob bought 3 packs of model xars.he gave 4 cars to ann.bob has 11 cars many model cars were in each pack


There are 5 model cars were in each pack.

Let x represent the number of each cars in each model.

Since bob bought 3 packs of model cars, hence:

Number of cars Bob bought = 3x

He gave out 4 cars to Ann and still had 11 cars left, hence:

3x - 4 = 11

3x = 15

x = 5 cars

Hence there are 5 model cars were in each pack.

Find out more at:

Well since he gave Ann 4 cars and 11 are left, you would add them up which gives u a total of 15 cars. Now you would have to divide 15 by 3 (the total number of pack) which is 5. This means that there were 5 cars in each pack
Random Questions
Led revolutionaries to seize Santo Domingo and declare the Dominican Republic independent. Toussaint L'Ouverture Ramón Matías Mella Antonio Montesino Rafael Trujillo 4. ___________ is an upbeat style of music using drums, a guiro scraper, and an accordion. Merengue Encomienda Cassava Campesino 5. Controlled the Dominican Republic as a corrupt dictator for over 30 years. Ramón Matías Mella Rafael Trujillo Toussaint L'Ouverture Antonio Montesino 6. He freed his slaves and led a revolt which marked the start of the Ten Years' War in Cuba. Fulgencio Batista Diego Velazquez de Cuellar Fidel Castro Carlos Manuel de Céspedes 7. ___________ is a form of music that combines Spanish guitar and African drums. Caribbean Son Salsa Mambo 8. The Spanish policy of ___________ parceled land to colonists and enslaved indigenous Taino people. cassava campesino encomienda merengue 9. ___________ is the Dominican Republic's largest industry. Fishing Tourism Sugar Manufacturing 10. The ___________ religion teaches the worship of nature spirits and the spirits of dead ancestors. Scientology Hindu Voodoo Buddhism 11. A slave who led a revolt; succeeded in capturing the entire island of Hispaniola. Ramón Matías Mella Toussaint L’Ouverture Antonio Montesino Rafael Trujillo 12. In communist Cuba, the President has ___________ power. unlimited zero limited little 13. ___________ are poor farmers who own small plots and raise livestock, rice, and vegetables. Merengues Encomiendas Cassavas Campesinos 14. ___________ is the oldest city and the capital of the Dominican Republic. Viñales Puerto Plata Havana Santo Domingo 15. A(n) ___________ is a Spanish person born in Cuba. juventud teem taino criollo 16. The Cuban crocodile lives in the ___________ Swamp. Vinales Zapata Turquino Santiago 17. Dominicans participate in a two-party system and ___________ elections. fair limited free closed 18. ___________ is a rare gemstone found only in a single mountain in the Dominican. Lapis lazuli Jade Cassava Larimar 19. The Dominican Republic shares the island of ___________ with Haiti. Bahamas Jamaica Santo Domingo Hispaniola 20. Followers of ___________ worship orishas, or spirits, similar to saints. Roman Catholicism Mambo Castro Santerí­a 21. Cuba and Hispaniola are part of the ___________, a group of islands in the Caribbean Sea. Continental Antilles Grand Antilles Greater Antilles Caribbean Antilles 22. ___________ is the Caribbean's largest nation. Cuba The Dominican Republic Haiti Jamaica 23. Cuba's main agricultural product is ___________. wheat bananas maize sugar 24. ___________ is the capital of Cuba and its largest city. Santo Domingo Viñales Puerto Plata Havana 25. Led a group of revolutionaries in toppling dictator Fulgencio Batista; made Cuba the communist state it is today. Diego Velazquez de Cuellar Fulgencio Batista Carlos Manuel de Céspedes Fidel Castro
HOWEVER GIVES ME THE CORRECT ANSWERS I WILL MARK BRAINLEST PLEASE HELP XOXOXOXOXOXOX :))))))))))))))) 1.   Is the passage of dialogue written correctly or incorrectly?      "Which movies are opening this weekend?" Peter asked his sister. She replied, "Well, I've been waiting for the new listings to appear on the theater's website."   A. correctly   B. incorrectly Is the passage of dialogue written correctly or incorrectly?      "Oh, wow!" Ashley cried. "I love these shoes." "They would look good on you," said her friend.   A. incorrectly   B. correctly Is the passage of dialogue written correctly or incorrectly?            "I'll rake the leaves," the young boy said to his father.      "That's a kind offer," his father replied.   A. correctly   B. incorrectly 4.   Is the passage of dialogue written correctly or incorrectly?      "That's an excellent choice," the clerk said. Then she added, "I'm sure your grandson will like it."   A. correctly   B. incorrectly 5.   Is the passage of dialogue written correctly or incorrectly?      "I think I can fix it," said the repairman.      "How long will it take to repair?" asked my mother.      "Only a few days," the repairman replied.   A. incorrectly   B. correctly 6.   Is the passage of dialogue written correctly or incorrectly?      Would you please water the plants? asked Cory.      I would be glad to, replied Marcy.   A. incorrectly   B. correctly 7.   Is the passage of dialogue written correctly or incorrectly?      Then he added, "I have a new idea for a tree house." "Will it cost a lot?" his mother asked. "I think we can do it for free," Vernon replied.   A. incorrectly   B. correctly Is the passage of dialogue written correctly or incorrectly?      "Is he still stuck at the airport?" asked Matt.      "He just got back late last night," said Phil.      "Oh, that's a relief!" sighed Matt.   A. correctly   B. incorrectly Is the passage of dialogue written correctly or incorrectly?      "Did you finish your homework"? asked Forrest.      "I have to write a summary of this story after I finish reading it". Jeff answered.      "I will leave you to it", said Forrest. "By the way, it's an exciting story", he added.   A. incorrectly   B. correctly 10.   Is the passage of dialogue written correctly or incorrectly?      "Why, it's quite easy," Janice said. "If you want, why don't we meet at the library to study? I could use some more practice, and we could work together."      "Thanks, Janice," Megan said enthusiastically. "You're a really good friend! What time should I get there?"   A. incorrectly   B. correctly