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antiseptic1488 [7]
3 years ago
11

Write the augmented matrix for the following system of equations. - 3x + 2y = 7 5 – 2x = 7y

Mathematics
2 answers:
Alik [6]3 years ago
8 0
X,y= (-39/25 , 29/25)
never [62]3 years ago
7 0

Answer:

Point Form: (-\frac{39}{25} , \frac{29}{25} )

Equation Form: x=-\frac{39}{25} , y=\frac{29}{25}

Step-by-step explanation:

Using its matrix, you are going to solve with

Write both equations in standard form. ...

Make the coefficients of one variable opposites. ...

Add the equations resulting from Step 2 to eliminate one variable.

Solve for the remaining variable.

Substitute the solution from Step 4 into one of the original equations.

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Whats the value of x
Elenna [48]

Answer:

x = 105°

Step-by-step explanation:

The exterior angle of a triangle = sum of 2 opposite interior angles

x = 18° + 87° = 105°


3 0
3 years ago
what percent of the students who spend less than 4 hours a week on screens reported a grade average above 80? round your answer
kifflom [539]

Answer:

okay so 400%

Step-by-step explanation: Here's why so basically 80 divided by 4 is 20 and 20 rounded to the nearest tenth is 4 so 4 turned into a percentage is 400%. Sorry if I am incorrect.

8 0
2 years ago
Solve 15 ≥ -3x or 2/3 x ≥ -2.
hjlf
Solve each of the equations independently, then determine if the are continuous or discontinuous. 
15≥-3x [start here]
-5≤x    [divide both sides by (-3). *Dividing by a negative number means the direction of the sign changes!]
x≥-5  [just turned around for analysis]

Next equation:
2/3x≥-2    [start here]
x≥-2(3/2)  [multiply both sides of the equation by the reciprocal, 3/2)
x≥-3

So, (according to the first equation) all values of x must be greater than, or equal to -5.

(According to the second equation) all values of x must be greater than, or equal to -3. 
So, when graphed on a number line, both equations graph in the same direction, so they are continuous.

4 0
3 years ago
Read 2 more answers
Use the diagram of the right triangle above and round your answer to the nearest hundredth. If m <br> a. 17.32 m<br> b. 6.93 m<b
zepelin [54]
In ΔABC,
tanA = a/b
∴ a = b×tanA = 12×1/√3 = 6.928 ~ 6.93 m
7 0
3 years ago
HELP ME QUICKLY PLS I WILL GIVE BRAINLYST
Furkat [3]

Answer:

1. 1.25 or 1 and 1/4

2. 3/2 or 1 and 1/2

3. 6/7

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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