Answer:
C
Step-by-step explanation:
sqrt x can be zero, but you can't sqrt a negative number. there is no further restrictions on sqrt x, there it goes to positive infinity.
Answer:

Step-by-step explanation:
When you use "and" you multiply the probabilities
Probability to get a 4 is 1/6
Probability to get a 5 is 1/6
Probability to get a 4 with a dice "and" a 5 with the other is 1/6 * 1/6 = 1/36
Answer:

Step-by-step explanation:
Per person available ladles full of soup
Total number of persons
Hence total number of ladles full of soup
Now per person available ladles full of soup
Total number of persons that can be fed

Answer:
x = -64
Step-by-step explanation:
Step 1: Write out equation
9 - 3/4x = 57
Step 2: Subtract 9 on both sides
-3/4x = 48
Step 3: Multiply both sides by -4/3
x = -64
Answer:
Ivan gets £90 more than Tanya
Step-by-step explanation:
Given that
Total amount = £150
Ratio: 4:1
First of all we have to find the sum of ratio: 4+1 = 5
Now,
Ivan's Share:

Tanya's Share:

Ivan gets £120 and Tanya gets £30
The difference between their shares is the answer.
So,

Hence,
Ivan gets £90 more than Tanya