20.sometimes
21.always
22.always
23.sometimes
Answer:
The freezing point of the water with the added potassium is 24 degrees Fahrenheit.
Step-by-step explanation:
To find the freezing point of the water with the added potassium, you need to subtract 8 degrees from the initial freezing point of water, This is because you know that after adding potassium to water, the freezing point went down by 8 degrees Fahrenheit. So you need to subtract 8 degrees from the initial freezing point of water (32 degrees Fahrenheit). 32º F - 8º = 24º F. So the freezing point of the water with the added potassium is 24 degrees Fahrenheit.
To make it easier, I am going to simplify it.
4×16-16 ? 4×[24-2×(4+8)]
64-16 ? 4×[24-2×12]
48 ? 4×[24-24]
48 ? 4×[0]
48 ? 4×0
48 ? 0
48>0
The symbol is >, so the answer is A.
Answer:
k = 10
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the opposite interior angles
115 = (4k+5) + (6k+10)
Combine like terms
115 = 10k+15
Subtract 15 from each side
115-15 = 10k +15-15
100 = 10k
Divide by 10
100/10 = 10k/10
10 =k