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

Your class is collecting macroinvertebrates (insects & other small animals found in water) to determine the pollution level in a local creek. Each macroinve

Which graph shows the dilation image of rectangle ABCD with the center of dilation at the origin and a scale factor of 1.5? (First picture is the one you have t

What does 4 feet equal

(Picture included) Can someone tell me the answers to these two questions?

PLS HELP!!!! Rewrite the sentences making sure to replace the direct object nouns with direct object pronouns (dop). Hints: Don’t forget that dop’s are substitu

A science class planted a tree in the school courtyard that was 6 inches tall. It is growing 4 inches each week. write a function rule for the height, h, of the

please help!posted picture of question

which of the following products was a major export from China during the Ming and quing dynasties

Many species of bacteria have become resistant to antibiotics because antibiotics have been so widely used. now, bacteria that used to be killed by antibiotics

please help! posted picture of question