Answer:
40
Step-by-step explanation:
27+8+5=40 since 8 & 5 are the total amounts she took out of the original bag.
Answer:
A recent report estimated that 25% of all college students in the United States have a sexually transmitted disease (STD). The director of the campus health center believes that the proportion of students with STDs is higher at their campus.
According to the American Heart Association guidelines, the daily maximum amount of sugar a teenager should have is 4 teaspoons. The parents of a local high school have expressed concerns that the average daily sugar intake of their students is higher than these guidelines and have been pressuring school officials to limit unhealthy snack and beverage choices offered in the cafeteria and student store.
Step-by-step explanation:
The first two researches involve the single sample compared to mean of population.
The 3rd and 4th research involves comparing samples of men and women that is two individual groups.
Answer:
- No
- Yes
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the additive inverse of non complex 9 is -9 .
<u>Step-by-step explanation:</u>
Complex number is said to be the sum of whole numbers and imaginary numbers.The additive inverse of the any number is the changing the sign of the number. That is instead –ve sign is positive and vice versa.
Additive Inverse of Complex Numbers:
Let take the complex numbers 
and its inverse be 
Step 1: Now add the Z and Z-1, we get
Step 2: Combine Like term, we get
Step 3: By using zero product property, we can equating as
and 
and 
Thus, the additive inverse of the complex numbers 
.
Now, additive inverse of 
= 
.
Therefore , the additive inverse of non complex 9 is -9 .
