Hi!
Explanation: <em><u>First you had to convert element to fraction is 2=2/1 ,and it gaves us -4/5÷2/1. Then apply to the fraction rules, -4/5 *1/2=-2/5 is the right answer. Hope this helps! And thank you for posting your question at here on Brainly. And have a great day. -Charlie </u></em>
Answer:
The answer is below
Step-by-step explanation:
a) For a normal model the sample size has to be equal or greater than 30 so that it can be a normal distribution.
b) Given that:
μ = 11.2 minutes, σ = 4.8 minutes, n = 45
The z score determines how many standard deviations the raw score is above or below the mean. It is given by:
For x < 10 minutes
Therefore from the normal distribution table, P(x < 10) = P(z < -1.68) = 0.0465
the answer is C will u make me brainlest please
The solution to all the questions about rectangles are;
4) Perimeter of the Squash field is 2 times the sum of it's Length and Width.
5) A = x²y² + 6xy + 5
6) V = x³y² + 6x²y + 5x + 3x²y² + 18xy + 15
<h3>Area and Perimeter of Rectangles</h3>
4) We can see the squash field is rectangular and the dimensions are;
Length; L = x + 1
Width; w = 4y
Formula for perimeter of a rectangle is;
P = 2(L + w)
P = 2((x + 1) + 4y)
In English sentence, we can say that;
Perimeter of the Squash field is 2 times the sum of it's Length and Width.
5) The beans field is rectangular and its' dimensions are;
Length; L = xy + 5
Width; w = xy + 1
Area of rectangular Beans field;
A = Length × Width
A = (xy + 5) * (xy + 1)
A = x²y² + 6xy + 5
6) Formula for volume of the cube formed by the height will be;
V = L * w * h
since h = (x + 3)
Thus, volume is;
V = (xy + 5) * (xy + 1) * (x + 3)
V = x³y² + 6x²y + 5x + 3x²y² + 18xy + 15
Read more about Area and Perimeter of Rectangles at; brainly.com/question/17297081