Hello we know that the triangles are proportional so they have the same ratio
the unknown side is 21 because of this.
18/6=3/1
for each 1 unit in the bottom triangle there are 3 in the top
9×3=21
Answer:
4-Cups
3-Plates
Step-by-step explanation:
4x6 = 24
3x8 = 24
Answer:
Option c) is correct.
That is x-5y=12 and 3x+2y=-15 are the system of linear equations satisfies the point (-3,3) so this is the solution.
Step-by-step explanation:
To verify that which system of linear equations having the solution (-3,-3)
Let ![x-5y=12\hfill (1)](https://tex.z-dn.net/?f=x-5y%3D12%5Chfill%20%281%29)
and ![3x+2y=-15\hfill (2)](https://tex.z-dn.net/?f=3x%2B2y%3D-15%5Chfill%20%282%29)
To solve it we have to use elimination method
First multiply the equation(1) into 3 we get
![3x-15y=36\hfill (3)](https://tex.z-dn.net/?f=3x-15y%3D36%5Chfill%20%283%29)
Now subtracting the equations (2)and (3) the signs may vary in the second equation we get
![3x-15y=36](https://tex.z-dn.net/?f=3x-15y%3D36)
![-3x-2y=+15](https://tex.z-dn.net/?f=-3x-2y%3D%2B15)
________________
![-17y=51](https://tex.z-dn.net/?f=-17y%3D51)
_______________
![y=-\frac{51}{17}](https://tex.z-dn.net/?f=y%3D-%5Cfrac%7B51%7D%7B17%7D)
![y=-3](https://tex.z-dn.net/?f=y%3D-3)
Now substitue the value y=-3 in equation (1) we get
![x-5y=12](https://tex.z-dn.net/?f=x-5y%3D12)
![x-5(-3)=12](https://tex.z-dn.net/?f=x-5%28-3%29%3D12)
![x=12-15](https://tex.z-dn.net/?f=x%3D12-15)
Therefore x=-3
Therefore the solution is (-3,-3)
Therefore Option c) is correct.
That is x-5y=12 and 3x+2y=-15 are the system of linear equations satisfies the point (-3,3) so the solution is (-3,-3).
Answer:
<h2>A) Height is the missing measurment.</h2><h2 /><h2> B) 1,400= 20 × 14 × H</h2><h2 /><h2>C) 1400 ÷ H = 280</h2>
Step-by-step explanation:
A) Length × Width × Height
B) V is 1,400
L is 20
W is 14
H is unknown so use a variable
C) 20 × 14= 280.