Answer:
x =4 ,y =4 and z =0 is the solution.
Step-by-step explanation:
We shall solve the equations using elimination method
In equation 2 and 3 we can see that coefficient of z in both equations are same with opposite sides , adding equations (2) and (3)
3y+5z = 12
y -5z = 4 adding the equations
___________
4y = 16
dividing both sides by 4
y =
y = 4
Plugging the value of y in equation 2 or equation 3 ,we get
3(4) +5z = 12
12+5z = 12
5z = 12-12 or 5z =0 gives z =0
plugging y =4 and z =0 in equation 1
2x+3(4)+ 0 = 20
2x+12 = 20
2x =20-12
2x = 8
x = 8 divided by 2 gives
x =4
therefore solution of the system is given by
x=4 , y =4 and z =0
The rate of change is it drops 3 degrees every hour.
my work :12-(3×6)=-6
9:00 = 12 degrees
10:00 = 9 degress.
11:00 = 6 degress.
12:00 = 3 degress
1:00 = 0 degress.
2:00 = -3 degress
3:00 = -6 degress
Hope this helps if so mark as brainliest
U would do this because no matter the order, the answer will be the same
Answer:
hi
Step-by-step explanation:
Answer:
The diameter of the circle is 56 cm.
Step-by-step explanation:
Given : The area of the circle is 2464 cm square.
To find : The diameter of the circle?
Solution :
The area of the circle is defined as
Where, A=2464 cm² is the area,
r is the radius
Substituting the values,
Radius of the circle is 28 cm.
The diameter of the circle is
Therefore, The diameter of the circle is 56 cm.
Answer:
15% per year
7.5% half year
5000 * 7.5% = $375 every 6 months.
Step-by-step explanation:
