The answer is b) cubic units / metre
Answer:
![x=9](https://tex.z-dn.net/?f=x%3D9)
Step-by-step explanation:
ABC is the sum of the angles CBD and ABD. So:
![\angle ABC=\angle CBD+\angle ABD](https://tex.z-dn.net/?f=%5Cangle%20ABC%3D%5Cangle%20CBD%2B%5Cangle%20ABD)
Substitute them for their equations:
![(-7x+241)=(-4x+123)+(154-7x)](https://tex.z-dn.net/?f=%28-7x%2B241%29%3D%28-4x%2B123%29%2B%28154-7x%29)
Solve for x. Combine like terms on the right:
![-7x+241=-11x+277](https://tex.z-dn.net/?f=-7x%2B241%3D-11x%2B277)
Add 11x to both sides:
![4x+241=277](https://tex.z-dn.net/?f=4x%2B241%3D277)
Subtract 241 from both sides:
![4x=36](https://tex.z-dn.net/?f=4x%3D36)
Divide both sides by 4:
![x=9](https://tex.z-dn.net/?f=x%3D9)
The value of x is 9.
And we're done!
Answer:
42
Step-by-step explanation:
because 15 by 42 = 630
1 nickel = 5 cents
1 dime = 10 cents
The total = $2.40
There’s a total of 30 coins.
12 nickels = $0.60
18 dimes = $1.80
Isabelle has 12 nickels.