2x + 22 = 4(x + 3)...distribute thru the parenthesis
2x + 22 = 4x + 12...subtract 2x from both sides, subtract 12 from both sides
22 - 12 = 4x - 2x...simplify
10 = 2x...divide both sides by 2
10/2 = x...reduce
5 = x <==
Answer: There are 152 apples.
The explanation is shown below:
- You need to write the following three equations, where
is the the number of apples,
is the number of pears and
is the number of oranges:
1) ![a+p=184](https://tex.z-dn.net/?f=a%2Bp%3D184)
2) ![a+o=248](https://tex.z-dn.net/?f=a%2Bo%3D248)
3) ![o=3p](https://tex.z-dn.net/?f=o%3D3p)
- You must substitute the equation 3) into the equation 2):
![a+3p=248](https://tex.z-dn.net/?f=a%2B3p%3D248)
- Now, you need to solve for
in the equation 1) and then you must substitute it into
:
![p=184-a](https://tex.z-dn.net/?f=p%3D184-a)
![a+3(184-a)=248](https://tex.z-dn.net/?f=a%2B3%28184-a%29%3D248)
- Solve for
, as following:
![a+552-3a=248\\-2a=-304\\a=\frac{-304}{-2}\\a=152](https://tex.z-dn.net/?f=a%2B552-3a%3D248%5C%5C-2a%3D-304%5C%5Ca%3D%5Cfrac%7B-304%7D%7B-2%7D%5C%5Ca%3D152)
- Therefore, there are 152 apples.
Answer:
$150/$1.35 = £111.1 => £950 + £111.1= £1061.1
The total cost does Rian spend on airport tax : (111.1/1061.1) x 100 = 10.47%
Step-by-step explanation:
First....6÷1/2= 12
so.....12*3.9=46.8 milligram
Answer:
I’m not 100% sure but I think 120°.
Step-by-step explanation:
This is because, angles on a straight line add up to 180°. Because there is 60 degrees on one side of line B, this means the other section is 120° (120°+60°=180°) The angle labelled (3x) is alternate to the angle of 120°. Alternate angles are always equal, meaning that 3x is equal to 120°.
I hope this is right.