Answer:
Area of the trapezium = 30
Step-by-step explanation:
a = 14
b = 4
h= 5
Area of trapezium = ( a + b) h = (14+4) 5
= x 18 x 5 = 6 x 5 <em> [I solved </em><em> and 18]</em>
= 30!
Answer:
Step-by-step explanation:
the answer is 34 when you get a2 ans subtract the mineral you get a desemel and if you round that using the arcoulation sistum you get 34 hope this helps messege me if it dose
8 litres (amount of 20% solution needed) and 7 litres for (amount of 50% solution needed)
<u>Step-by-step explanation:</u>
Let consider ‘x’ for 20% acid solution and (15 – x) for 50% acid solution. And so, the equation would be as below,
20% in x + 50% in (15 – x) = 15 litres of 34%
Convert percentage values, we get
0.20(x) + 0.50 (15 – x) = 15 (0.34)
0.20 x + 7.5 – 0.50 x = 5.1
-0.3 x + 7.5 = 5.1
0.3 x = 7.5 – 5.1
0.3 x = 2.4
Apply ‘x = 8’ value in (15 – x) we get,
15 – 8 = 7 litres
The value of 7 litres for (amount of 50% solution needed)