All categories

3 years ago

3x + 7y = 21 –3x – 7y = 42 Solve the system of equations?

Mathematics

1 answer:

likoan [24]3 years ago

8 0

9514 1404 393

Answer:

no solution

Step-by-step explanation:

The equations describe parallel lines. There are no values of x and y that will satisfy both equations.

In standard form, the two equations are ...

3x +7y = 21

3x +7y = -42 . . . . . with positive leading coefficient

If (x, y) values satisfy the first equation, they cannot satisfy the second equation, and vice versa.

You might be interested in

1/3x + 3 = -2 <br> steps please

Lunna [17]

Answer:

what is this for?

Step-by-step explanation:

3 0

3 years ago

Write an equation in slope-intercept form of the line with the parametric equations x=2t and y=1-t

pentagon [3]

Answer: -x/2 + 1

Step-by-step explanation:

write t in terms of x

x = 2t

t = x/2

substitute t in y

y = 1 - t

y = 1 - x/2 or -x/2 + 1

6 0

2 years ago

Read 2 more answers

Find a number that is 6 less than ，3 divided by 5

djverab [1.8K]

Answer:

-3.06

Step-by-step explanation:

3-6=-3

-3/5=-0.6

6 0

3 years ago

Read 2 more answers

For two events and , the probability that occurs is 0.8, the probability that occurs is 0.4, and the probability that both occur

sergey [27]

Answer:

P(B|A)=0.25 , P(A|B) =0.5

Step-by-step explanation:

The question provides the following data:

P(A)= 0.8

P(B)= 0.4

P(A∩B) = 0.2

Since the question does not mention which of the conditional probabilities need to be found out, I will show the working to calculate both of them.

To calculate the probability that event B will occur given that A has already occurred (P(B|A) is read as the probability of event B given A) can be calculated as:

P(B|A) = P(A∩B)/P(A)

= (0.2) / (0.8)

P(B|A)=0.25

To calculate the probability that event A will occur given that B has already occurred (P(A|B) is read as the probability of event A given B) can be calculated as:

P(A|B) = P(A∩B)/P(B)

= (0.2)/(0.4)

P(A|B) =0.5

7 0

3 years ago

A plan for an executive travelers' club has been developed by an airline on the premise that 5% of its current customers would q

fgiga [73]

Answer:

Step-by-step explanation:

Download docx

4 0

3 years ago