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lutik1710 [3]
3 years ago
7

Solve the system of equations. If the system has no​ solution, say that it is inconsistent. Graph the lines of the system.

Mathematics
1 answer:
8090 [49]3 years ago
7 0

Answer:

  c. The system is inconsistent

Step-by-step explanation:

Multiplying the first equation by 2 gives ...

  4x +2y = 4

Compare this to the second equation:

  4x +2y = -5

There are no values of x and y that can satisfy both equations. The system is inconsistent.

_____

The equations describe lines that are parallel and do not intersect.

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Toby exercises 14 hours a week. John exercises 20% more than Toby and Jenny exercises two more hours than John. Which expression
sleet_krkn [62]
John exercised 20% more than Toby. So the number of hours that John exercises per week is 14 + 0.2(14) = 14 + 2.8 = 16.8.

Jenny exercises two more hours than John. So the number of hours that Jenny exercises per week is 16.8 + 2 = 18.8.

So an expression representing the number of hours that Jenny exercises after w weeks is 18.8w.
8 0
3 years ago
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Two middle school classes take a vote on the destination for a class trip. Class A has 25 students, 56% of whom voted to go to S
Kryger [21]

Answer:

The value of <em>n </em>is 15.

Step-by-step explanation:

The combined proportion is computed using the formula:

P=\frac{n_{A}\cdot p_{A}+n_{B}\cdot p_{B}}{n_{A}+n_{B}}

The information provided is as follows:

n_{A}=25\\p_{A}=0.56\\n_{B}=n\\p_{B}=0.60\\P=0.575

Compute the value of <em>n</em> as follows:

P=\frac{n_{A}\cdot p_{A}+n_{B}\cdot p_{B}}{n_{A}+n_{B}}

0.575=\frac{25\times 0.56+n\times 0.60}{25+n}\\\\0.575(25+n)=14+0.60n\\\\14.375+0.575n=14+0.60n\\\\0.60n-0.575n=14.375-14\\\\0.025n=0.375\\\\n=15

Thus, the value of <em>n </em>is 15.

6 0
3 years ago
What is the distance between the points (7, 8) and (–8, 0) on a coordinate grid?
Reptile [31]

Answer:

Hence, the distance between (7,8) and (-8,0) is:

17

Step-by-step explanation:    (a,b)=(7,8) and (c,d)=(-8,0)

Hope this helps!!!!!!

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3 years ago
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A square has sides of length s. a rectangle is 6 inches shorter and 1 inch longer.Which of the following expressions represents
MAVERICK [17]
The answer is s^2 - 5s +6. 
:) Have A Nice Day!!! :) 
PLEASE PICK ME FOR THE BRAINIEST ANSWER/CROWN!!! :) :) :)))) :D
7 0
3 years ago
Keith works 8 hours per day for 5 days per week. Melba works 2,250 minutes each week. who spends more time at work?​
artcher [175]
8 x 5 = 40

40 hours = 2400 minutes

2400>2250

Keith spends more time at work
8 0
3 years ago
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