D. divide them by 25 and there it is
Answer:
Alina had at the beginning cookies
Step-by-step explanation:
we know that
c-----> represent 30% of all the cookies Alina had
Let
x-----> the 100% of all the cookies Alina had
by proportion
The answer to this question would be: 40% or 0.4
In this question, you are asked the probability of hitting bull's eye on the fourth shot. This event is only one(only fourth, not all four shot) and should be independent to the first 3 shots. That mean, the chance should still 40% since every shot chance is 40%.
Answer:
It is an Observational study. The population of interest is fifth-grade boys and girls in your school district.
Step-by-step explanation:
Consider the provided information.
Observational study is the study in which observer only observe the subjects, and measure variables of interest without allocating treatments to subjects.
Experiment study is the study in which the researchers are applying treatments to experimental units in the research, then the effect of the treatments on the experimental units is observed.
Now consider the provided survey.
Here, students are randomly selected form the population of fifth-grade boys and girls.
The aim of the study is to observe the subjects and no treatment was administered to the students.
Thus. it is an Observational study.
The population of interest is fifth-grade boys and girls in your school district.
The study is to observe who is faster fifth-grade boys or fifth-grade girls at solving Ken-Ken puzzles.
Answer:
-3+4i
Step-by-step explanation:
on a graph the complex number is (-3,4) The magnitude is -3^2+4^2=c^2
c=5 when solved