Use addition to solve the linear system of equations. Include all of your work in your final answer.

2 answers:

muminat3 years ago

8 0

Answer: Im not entirely sure this could work but rearrange the formula into a simultaneous equation so this for instance; (rearrange in another way if this isn’t entirely right)

3x-y=6

x+y=4

then same sign subtract them to give you y and x and plot or use to find the linear system.

Step-by-step explanation: Just from common knowledge, so sorry if this is wrong but give it a go.

Korolek [52]3 years ago

3 0

3x-(x-4)=6
3x-x+4=6
2x+4=6
2x=2
X=1

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Suppose we draw 3 marbles from a jar containing 7 red and 5 blue marbles. At each stage, a ball is drawn and its color noted. Th

Vilka [71]

Answer:

The probability that the next two balls are blue is $\frac{5}{32}$

Step-by-step explanation:

There is a total number of 12 balls in the jar (7 Red and 5 blue), if the first marble drawn is a given, that is it is a Red marble, then following the instruction the Red marble and two more Red marbles are added. Therefore making the total number of marbles in the jar to be 14 marbles (9 red and 5 blue).

FIRST EVENT: So the probability of drawing the second marble to be a blue marble becomes = 5/14 [this is the number of blue marbles/ total number of marbles in the jar].

Thereafter the blue marble is returned and two more blue marbles are added to the jar making a total of 16 marbles (9 red and 7 blue}.

SECOND EVENT: So the probability of drawing the third marble to be a blue marble becomes = 7/16 [this is the number of blue marbles/ total number of marbles in the jar].

However, this is not the final answer because the first event and the second event must occur together, therefore, one has to multiply the first events probability and the second events probability to get the probability we are looking for.

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3 years ago

2m^2-5m-3=0 by factorization

musickatia [10]

Step-by-step explanation:

It is so simple Hope u understand