msangeleyes6363 msangeleyes6363

21-12-2017
Mathematics

contestada

7k+4l=20 and -8k+2l=10
What is the value of k?

Respuesta :

anchitam9 anchitam9

23-12-2017

7k+4l=20
(-8k+2l=10)-1
8k-4l=-10
+
7k+4l=20
15k+0=10
10/15= 2/3
k=2/3

Answer Link

Otras preguntas

Explain why Bob would conclude the emissions of the two signals occurred at different times even though they are simultaneous to Alice. Note that this explanati

helium originates from helium originates from only the big bang. mostly from stellar nucleosynthesis with a small contribution from the big bang. only radioacti

schleroderma is an autoimmune disorder in which the connective tissues become thickened and hardened, causing the skin to become hard and swollen.

Menciones tres ejemplos de cada una de las siguientes propiedades : textura- conductividad electrica- masa

1. If someone sent you a professional email with many grammatical and spelling errors, what do you think this would say about the sender? 2. Why do you think th

During radical neck surgery for cancer, the surgeon inadvertently cut the cervical branch of the facial nerve. Which of the following signs would not be observe

a diversification strategy should avoid adding businesses that make excessive demands on nonfinancial resources, including which of the following? multiple sele

Black coat is dominant over white coat in guinea pigs. A homozygous black pig is mated with another homozygous black pig. What are the genotypes of the parents?

"parents of children who vandalise schools and other public property must pay heavy fines to the government for their children's action". write an essay giving

Assuming that everything else is equal, a corporate bond issued by an electronics manufacturer most likely pays a _________ (higher or lower?) interest rate tha