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Jlenok [28]
3 years ago
9

4x+3y=12

Mathematics
1 answer:
77julia77 [94]3 years ago
8 0

Answer:

B, C, F

Step-by-step explanation:

Given:

\left\{\begin{array}{l}4x+3y=12\\ \\2x+3y=-6\end{array}\right.

Subtract the second equation from the first equation:

(4x+3y)-(2x+3y)=12-(-6)\\ \\4x+3y-2x-3y=12+6\\ \\2x=18\\ \\x=9

Option B "The x coordinate of the solution is 9" is ture

Substitute it into the first equation:

4\cdot 9+3y=12\\ \\36+3y=12\\ \\3y=12-36\\ \\3y=-24\\ \\y=-8

Option F "The y coordinate of the solution is -8" is true.

Point (9,-8) is in the IV quadrant, so option C is true.

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2, 2, 2, 3, 4, 4, 11<br> What is the median of the seven data values shown?
Oduvanchick [21]

Answer:

Median is 3

Step-by-step explanation:

6 0
3 years ago
Given that -15 is a root of x² +mx +45 = 0 find the constant m​
o-na [289]

Answer:

m = 18

Step-by-step explanation:

Given :

=> -15 is a root of the polynomial

=>  It is a zero to the solution.

Process :

Substitute -15 in place of x.

=> (-15)² + (-15)m + 45 = 0

=> 225 + 45 - 15m = 0

=> 15m = 270

=> m = 270/15

=> m = 18

5 0
3 years ago
A line has the same slope as the line 3x+9y=5 and passes though the point (-1,2).what is the equation of the line?
MrRissso [65]

Answer:

y = -1/3x + 5/3

Step-by-step explanation:

First solve the equation. Simply put it is y = -1/3x + 5/9.

So, we have our slope which is -1/3. Now just plug it in.

y - y1 = m(x - x1)

y - 2 = -1/3(x - (-1))

Distribute.

y - 2 = -1/3x - 1/3

Add 2 to both sides

you get y=-1/3x + 5/3

6 0
4 years ago
Tony rides the bus to and from school. His total riding time each day is 45 minutes. How much time does Tony spend riding to and
elena-14-01-66 [18.8K]

Answer:

225 minutes or 3 hours and 45 minutes

Step-by-step explanation:

45 (minutes per day) times 5 (days in a school week) = 225 minutes

or add 45 (minutes per day)+ 45+45+45+45 = 225

To get the hours:

Divide 225 by 60 (minutes per hour) and it is 3 - remainder 45.

3 0
3 years ago
Read 2 more answers
???????????????? Help it's probably super easy btw
Deffense [45]
Points:

Quadrant I: (+, +)
Quadrant II: (-, +)
Quadrant III: (-, -)
Quadrant IV: (+, -)

Thus the point (5,4) is found in Quadrant I.
6 0
4 years ago
Read 2 more answers
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