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ANTONII [103]
3 years ago
12

HELP HELP HELP HELP HELP

Mathematics
2 answers:
Harman [31]3 years ago
8 0
B
I need 20 characters lol
vekshin13 years ago
7 0

Answer:

If you look at the numbers in the second matrix, you can see that they are both four times the corresponding numbers in the first matrix.

This means that correct answer is B, the numbers were multiplied by the scalar 4.

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Two lines or equations are described in each part. Decide whether each system has one solution, no solution, or infinitely many
olga55 [171]
To get the solution of a set of equations means to get a point that satisfies both equations.

Part (1):
The first line has a rate of change of 7, this means that slope of first line is 7
The second line has a rate of change of -7, this means that slope of second line is -7
Since the slope of the first line = - slope of the second line, then these two lines are definitely perpendicular to each other.
Two perpendicular lines will meet only in one point. This means that one point only will satisfy both equations (check the image showing perpendicular lines attached below)
Therefore, only one solution exists in this case

Part (2): 
The first given equation is:
2x + 3y = 5.5
The second given equation is:
4x + 6y = 11
If we simplified the second equation we will get: 2x + 3y = 5.5 which is exactly similar to the first equation.
This means that the two given equations represent the same line. 
Therefore, we have infinite number of solutions

Part (3):
We are given that the two lines are parallel. This means that the two lines are moving the same path side by side. Two parallel lines can never intersect. This means that no point can satisfy both equations (check the image showing parallel lines attached below).
Therefore, we have no solutions for this case.

7 0
3 years ago
Read 2 more answers
How do you multiply mixed fraction like this one?<br><br> 2 3/4 x 3 1/2<br> Somoene help me please
In-s [12.5K]

Answer:

Hope it will help you a lot.

7 0
2 years ago
Read 2 more answers
X*2+1=10 then x=? Tell me the value of x
Trava [24]

Answer:

<h2>4.5</h2>

Step-by-step explanation:

x \times 2 + 1 = 10

2x +  1 = 10

Move constant to R.H.S and change its sign

2x = 10 - 1

Subtract the numbers

2x = 9

Divide both sides of the equation by 2

\frac{2x}{2}  =  \frac{9}{2}

Calculate

x = 4.5

Hope this helps..

Best regards!!

6 0
3 years ago
A shopkeeper purchased hammocks for $800 and sold them at a discount of 25%. What was the selling price? Choose the correct opti
myrzilka [38]

Answer:

B

Step-by-step explanation:

25% of 800 is 200, so 800-200 is 600

6 0
2 years ago
How do I do this and what is the correct answer?
mariarad [96]
B=3

Hope this helps.
Correct me if I’m wrong.
8 0
3 years ago
Read 2 more answers
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