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zysi [14]
3 years ago
14

How many solutions does the following system of equations have? v=3x +2 2v=5x+8

Mathematics
1 answer:
Alja [10]3 years ago
4 0

Answer:

The answer is C, zero solutions.  

Step-by-step explanation:

y = 5/2x + 2

2y = 5x + 8

Multiply 2 to the first equation.  

2y = 5x + 4

Compare it with the other equation

2y = 5x + 4

2y = 5x + 8

Cancel 2y and 5x on both sides.  

Remaining:

4 = 8

4 ≠ 8.  Therefore, the answer is C, zero solutions.  

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A sack of potatoes weighs 14 pounds 5 ounces. After Wendy makes potato salad for a picnic, the sack weighs 5 pounds 14 ounces. W
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Answer: Wendy used 8 pounds and 7 ounces of potatoes for the potato salad
4 0
3 years ago
In which of the following do you expect the correlation coefficient to be negative?
Oksanka [162]

Answer:

The graph I expect to have a negative correlation is the third graph.

Step-by-step explanation:

Positive correlation is when the the x-values increase with a corresponding increase in y-values.

Negative correlation is when the x-values increases with a corresponding decrease in y-values.

No correlation is when only x or y variable changes.

From the graphs given the only one that has a negative correlation is the third graph.

5 0
2 years ago
Two opposite sides of the square are increased by 8 inches and the other two sides are decreased by 5 inches. the area of the ne
Iteru [2.4K]

Answer:

The length of a side of the square would be 8.

Step-by-step explanation:

7 0
2 years ago
A decent-sized square plot of land in town is one acre. If Mr. Pearson wants to play football with his son Connor, then how far
sammy [17]
One acre of land is equal to 4046.86 sq.m.
To know how far they can throw the ball from corner to corner can be interpreted in two ways: throwing the ball diagonally across the field or throwing the ball horizontally across the field. For the first question, since the field is a square, you can use the equation Diagonal of Square = A x sq.root of 2.

In this case, the answer would be 89.97 m.

If the ball is thrown horizontally across the field, then you would only need to know the length of one side of the square, which is the square root of the area. Doing this would give you the answer 63.61 m.
4 0
3 years ago
Read 2 more answers
Help please urgent 25 point
uranmaximum [27]

Answer:

60

Step-by-step explanation:

b = the hypotenuse of a right angle triangle

a = the adjacent side.

R is being defined by the cosine

cos(R) = adjacent /  hypotenuse

adjacent = 16* sqrt(2)

hypotenuse = 32*sqrt(2)

Cos(R) = 16*sqrt(2) / 32*sqrt(2)      sqrt(2) cancels.

cos(R) = 1/2

R = cos-1(1/2)

R = 60 degrees.

4 0
3 years ago
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