26-05-2017
Mathematics

contestada

what is the value of -4k+2(5k-6)= -3k - 39

Respuesta :

26-05-2017

-4k+2 (5k-6)=-3k-39
-4k+10k-12=-3k-39
6k-12=-3k-39
+3k both sides
9k-12=-39
+12 both sides
9k=-27
÷9 both sides
k=-3

check

-4 (-3)+2 (5 (-3)-6)=-3 (-3)-39
12+2 (-15+-6)=9-39
12+2 (-21)=9-39
12-42=-30
-30=-30
k=-3 holds true

Answer Link

Otras preguntas

a teacher had 57.72 in his checking account. he made a deposit of 209.54. then he wrote a check for 72.00 and another check for 27.50. what is the new balance i

Which of the following was the central idea of the Wilmot Proviso? a. To forbid slavery in territories gained in the Mexican War b. To keep the federal or ter

over time do you think the Catholic Church's mission were more helpful or harmful to the native Americans? Explain

In poetry and fiction, the main reason for using vivid words is to A. keep the reader guessing B. create a mental image C. explain an idea D. illustrate the wri

which number is a factor of 14, but not a multiple of 2?

calculate the mass of a gas with a density of 0.0065 g/cm3 and volume of 260 cm3

How many times greater is 46 than 0.46? Explain to a classmate

A piece of wire was cut into 2 pieces in the ratio 5:9. The longer piece was 25cm. Find the length piece.

true or false social networking sites never allow members to post messages on the pages of other members

Which of the following ideologies was first practiced in classical Greece? a. Absolute monarchy b. Confucianism c. Caste system d. Democracy