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maw [93]
3 years ago
5

Solve using Cramer's rule. 3x + 2y = 5 x + 3y = 4 i need an answer ASAP

Mathematics
2 answers:
jarptica [38.1K]3 years ago
7 0

Step-by-step explanation:

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Dovator [93]3 years ago
4 0

Answer:

Step-by-step explanation:

Using Cramer's rule to find the values of x and y, there are 3 different values that we need to calculate, they are D, Dx, and Dy. In all 3 cases the “D” stands for the determinant

D = Determinant of x and y values in 2 x 2 matrix

x = Dx/D and y = Dy/D, here we replace x and y values with the values after the equal sign respectively

x = 29/58 = 1/2

y = -29/58 = -1/2

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Given that AB is a line segment and the angle a = 75°, work out the value of x.
Lapatulllka [165]

Answer:

x = 21

Step-by-step explanation:

given : angle a = 75

we need to find the value of x.

To find the value of x.

we know that it is a straight angle so the sum of angles on a line will be 180

3x + 2x + a = 180

5x + 75 = 180

5x = 180 - 75

5x = 105

x = 105/5

x = 21

8 0
3 years ago
(-0.75x + 6) - (2.5x - 1.9)
Komok [63]

Answer:

problem given:  (-0.75x + 6) -(2.5x -1.9)

distribute: -0.75x+6 -2.5x-1.9

combine like terms: -0.75x-2.5x= -3.25x ; 1.9+6=7.6

solution:  -3.25x+7.6

7 0
3 years ago
What is the slope of the line connecting (1,5) and (4,14)?
yan [13]

m = change in y over change in x

 m = (14-5)/(4-1)

m = 9/3 = 3

 m = 3

3 0
3 years ago
If 17 is 32 than what does 17+17+17+17+17=?
IceJOKER [234]

Answer:

The answer is 160

Step-by-step explanation:

Comment

There really should be no answer to this. It sort of destroys the meaning of equality. However, you might be working in different bases. I'll assume that, but the base will be a fraction, which brings up other problems.

Solution

You have 5 17s there. So you will need five 32s. 5 * 32 = 160

The answer is 160

5 0
2 years ago
5×n = 45÷3 <br> Find n without dividing
vazorg [7]

Answer: 3

Step-by-step explanation:

45 / 3 = 15

So,

What times 5 = 15

The answer is 3.

4 0
3 years ago
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