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Pachacha [2.7K]
3 years ago
12

18x-6y= 54 12y=6x-18 Solve this system of equations using the substitution method.

Mathematics
1 answer:
olga_2 [115]3 years ago
5 0

Answer:

x=10/3 , y=1/6

Step-by-step explanation:

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Different types of angels
marshall27 [118]

Step-by-step explanation:

assuming you are looking for angles and not angels:

Zero Angle (0° in Measure)

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7 0
1 year ago
The president of a certain university receives a salary that is three times the salary of one of the department heads. The total
marissa [1.9K]

Answer:

Salary of President =   $180,000

Salary of Dept. Head =  $60,000

Step-by-step explanation:

The question is to find the salary of president and department head.

We let the salary of one of department heads be "x"

Since, the salary of president is THREE (3) TIMES a department head, we can say:

Salary of President = 3x

Now, we know the total of these 2 salaries is 240,000. Thus, we can write:

Salary of President + Salary of Dept. Head = 240,000

3x + x = 240,000

Now, we can solve for x:

3x + x = 240,000\\4x=240,000\\x=60,000

And now the president is "3x", so his salary is:

3(60,000) = 180,000

Thus,

President's salary = 180,000

Dept head's salary = 60,000

8 0
3 years ago
Bricks are delivered to a work site and stacked in rows and columns, forming a rectangular prism. The length of the prism is 3 f
topjm [15]
Correct so far. Finish up.
.. (x +3)(x)(x -1) = 1170
.. x^3 +2x^2 -3x -1170 = 0 . . . . . . one sign change ⇒ one positive real solution

This is a cubic equation with one positive real solution. There are several possible approaches to solving this. My favorite is to let a graphing calculator show me the solution.

You can also factor 1170 = 13*10*9, so x=10.

The width of the prism is 10 feet; the length is 13 feet; the height is 9 feet.

6 0
3 years ago
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