Question 11- is 10
question 12- is 36
Question 15- is 58
Answer:
43
Step-by-step explanation:
36+12-5
48-5
Answer:
-14c+10
Step-by-step explanation:
add the -8c and -6c together and add 7 and 3 together. number comes after the variable
Since 10% = 0.10 by moving the decimal two spots to the left, we can say that 0.10L is the amount of alcohol with 10% concentration in L liters. Similarly, 0.60L is 60% for L liters and 0.30L is the amount of liters with 30%. If the amount of 10% alcohol solution in liters is x and the 60% in y, we get 0.10x+0.60y=0.30L due to that the liters add up to get a 30% amount of alcohol (this equation represents the amount of alcohol). Next, x+y=L. Since we know that we have 90 liters of 0.60, y=90 and we have
0.10x+54=0.30L
x+90=L. Plugging x+90 for L, we get 0.10x+54=0.3(x+90)=0.3x+27. Subtracting 27 and 0.1x from both sides, we get 0.2x=27. Next, we can multiply both sides by 5 (since 1/0.2=5) to get x=135 liters
10 * √96
10 * √(16 * 6)
10 * √16 * √6
10 * 4 * √6
40 * √6
40√6
