Answer:
Yes
Step-by-step explanation:
To figure out if (1,2) is a solution to the system, we can plug the values in and see if it is true.
3x-2y=-1
3(1)-2(2)=-1
3-4=-1
-1=-1
It is true for this equation. Now let's check the next one.
y=-x+3
2=-(1)+3
2=2
Since both equations are true when we plug the values in, (1,2) is a solution to the system.
Answer: (-9,6)
Step-by-step explanation:
3x+2y=-15
2x=-18
First solve for x in second equation
2x=-18
2x/2=-18/2
X= -9
Now substitute your x into first equation to find y
3(-9)+2y= -15
-27+2y=-15
2y= -15+27
2y= 12
2y/2=12/2
Y= 6
the answer to your question there would be 12
Answer:
No
Step-by-step explanation:
21 = 3p - 5
<u>Step 1</u> : Add 5 on both sides
21 + 5 = 3p
26 = 3p
3p = 26
<u>Step 2</u> : Divide 3 on both sides
p = 26/3
Hence, the solution of the given equation is 26/3, not 9.
Answer:
912m
Step-by-step explanation:
There are two triangles.
The height of the triangles are 16m and the base is 12m.
Multiply 12(16)/2 to get the area of the triangle.
The area of the triangle is 96m.
Multiply 96 by 2 to get 192.
There are three rectangles.
Height is 20m and the base is 12m
20(12) is 240. Then, multiply by three.
240(3) is 720.
Add 192 and 720 to get 912m.
Hope this helps! Comment if I did something wrong.
