rarafeliv0i7a rarafeliv0i7a

13-10-2016
Mathematics

contestada

In the system -12c+3d=6 and -3c+6d=-9, which expression could you use for substitution?. A. d=-1/2c-3/2. B.c=-2d+3. C.c=1/4d-1/2. D. d=4c-2

Respuesta :

HomertheGenius HomertheGenius

18-10-2016

The system:
- 12 c + 3 d = 6
- 3 c + 6 d = - 9
----------------------
The 1st equation:
- 12 c = - 3 d + 6 / * ( - 1) ( multiple both sides by -1 )
12 c = 3 d - 6 / : 12 ( divide both sides by 12 )
c = d / 4 - 1/2
Answer:
C ) c = 1/4 d - 1/2

Answer Link

Otras preguntas

Please select the word from the list that best fits the definition She went fuimos fuiste fueron fui fue

Which trade route stretched from Morocco and Mali across the largest desert?

how must the electronegativities of two atoms compare

helps how the figure is solved

Luke surveyed five classes at Cedar Elementary about whether they preferred soccer or basketball. The table shows the number of students that choose each sport.

A store bought 500 toys at a cost of $20 each. The store sold all the toys at a percent markup of 40%. Find the total selling price.

Please help me with question 8

What route did the Ottoman Empire moved pepper through?

Based on this chart, why is the Social Security Administration facing a funding problem? Life expectancy is increasing slower than expected, so people are not l

Write an equivalant quotient for 14/-7