Answer:
a. 25
Step-by-step explanation:
Note that the specifically state that they are vertical angles. This means that the two measurements should equal each other. Set the two expressions equal to each other, and isolate the x. Note the equal sign, what you do to one side, you do to the other:
3x = x + 50
Subtract x from both sides to isolate the x:
3x (-x) = x (-x) + 50
3x - x = 50
2x = 50
Isolate the x, divide 2 from both sides:
(2x)/2 = (50)/2
x = 50/2
x = 25
x = 25, or (a) 25 is your answer.
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Ok do in the first you have to do a darwin’s if what 87 and i don’t know more
Answer:
£10.80
Step-by-step explanation:
20% =
= 0.2 , then
£54 × 0.2 = £10.80
Let be B = how much water is in container B;
A = how much water is in container A;
B = 2A;
B - ( 1 / 6 )B = A + ( 1 / 6 )B + 1.8 ;
Then, 2A - ( 2A ) / 6 = A + ( 2A ) / 6 + 18 / 10 ;
2A - A / 3 = A + A / 3 + 9 / 5 ;
30A / 15 - 5A / 15 = 15A / 15 + 5A / 15 + 27 / 15 ;
30A - 5A = 15A + 5A + 27 ;
25A = 20A + 27 ;
5A = 27 ;
A = 27 / 5 ;
A = 5.4 liters;
B = 2 × 5.4 = 10.8 liters ;