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Bumek [7]
4 years ago
5

13) -3x - 4y = 8-4x - 3y=6​

Mathematics
1 answer:
Dvinal [7]4 years ago
6 0

Answer:

x = 0, y = -2

Step-by-step explanation:

-3x - 4y = 8  (1)

-4x - 3y=6​ (2)

Multiply (1) by -4 and (2) by -3, we have:

12x + 16y = - 32  (3)

12x + 9y= -18​ (4)

Subtract (4) from (3), we have:

(12x + 16y) - (12x + 9y) = - 32  - (-18)

<=> 7y = - 14

=> y = - 2

Replace y with - 2 in (3), we have x = 0

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Witch measurement is the most precise 3/32 in, 3/12 in, 1/12 ft, or 1/36 yd
Anna71 [15]

Answer:

The most precise measurement is 1/36 yd.

Step-by-step explanation:

In order to compare measurements, you would need to first convert them all to the same form of measurement in order to place them from least to greatest.  Since there are 12 inches per foot and three feet per yard, that would mean there are 36 inches per yard.  Since the first two measurements 3/32 and 3/12 are both in inches, then we just need to convert 1/12 ft and 1/36 yd to inches.  Since there are 12 inches per foot, we can multiply 1/12 x 1/12 to get 1/144 inches.  Likewise, since there are 36 inches per yard, we can multiply 1/36 x 1/36 to get 1/1296 inches.  Looking at our fractions, we see that 1/1296 inches would be the most precise measurement because it is the smallest fraction.  

5 0
3 years ago
Pls help me on this question :-
Nastasia [14]

Answer:

We conclude that the rule for the table in terms of x and y is:

  • y = 3x+2

Step-by-step explanation:

The table indicates that there is constant change in the x and y values, meaning the table represents the linear function the graph of which would be a straight line.

We know the slope-intercept form of the line equation

y = mx+b

where m is the slope and b is the y-intercept.

Taking two points

  • (-2, -4)
  • (-1, -1)

Finding the slope between (-2, -4) and (-1, -1)

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(-2,\:-4\right),\:\left(x_2,\:y_2\right)=\left(-1,\:-1\right)

m=\frac{-1-\left(-4\right)}{-1-\left(-2\right)}

m=3

We know that the y-intercept can be determined by setting x = 0 and finding the corresponding y-value.

Taking another point (0, 2) from the table.

It means at x = 0, y = 2.

Thus, the y-intercept b = 2

Using the slope-intercept form of the linear line function

y = mx+b

substituting m = 3 and b = 2

y = 3x+2

Therefore, we conclude that the rule for the table in terms of x and y is:

  • y = 3x+2
7 0
3 years ago
Which of the following is an advantage to using equations?
VMariaS [17]

We are given some statements, we need to find which of the given statements is an advantage to using equations.

<h3><em>The correct option is </em></h3><h3><em>(A). When given two names for the same quantity, you can use algebra to solve the equations.</em></h3>

Incorrect options are :

(B). You can forget what an equation represents when it is used by itself.

(C). every problem needs an equations if you want to solve it.

3 0
4 years ago
How do you write y + 2 = 2(x − 2) in standard form?
Juli2301 [7.4K]

Answer:

y+2=2x-4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Can someone help me please
Talja [164]

Answer:

B

Step-by-step explanation:

4 0
3 years ago
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