Answer:
e). the sample size is n = 1000 and 50 percent of all students use the vending machines.
Step-by-step explanation:
The efficiency of the test would be highest when the sample size includes a minimum of 1000 samples and at least half of the students must use them. Conducting the test under such conditions would make it impactful and show if the idea would be successful and beneficial or not. <u>If a lesser percentage of students use it, its investment might be difficult to recover or if the test is conducted with a smaller population, the results or outcomes might not be reliable or trustworthy for representing the entire population</u>. Thus, <u>option e</u> shows the correct situations.
Answer:
Step-by-step explanation:
1) Vertex form of a quadratic equation is y=a(x-h)2+k, where (h,k) is the vertex of the parabola.
2) The vertex of a parabola is the point at the top or bottom of the parabola.
3) 'h' is -6, the first coordinate in the vertex.
4) 'k' is -4, the second coordinate in the vertex.
5) 'x' is -2, the first coordinate in the other point.
A) 3y - x = 10 is the correct answer! (I just graphed it on Desmos.com)
Answer:
a. $20.45
b. $24.55
c. $4.55
Step-by-step explanation:
In this question, we are asked to calculate the cost price and profit or loss selling a pair of shoes.
we proceed as follows
Firstly, we want to find the cost price given the selling price and the mark up percentage.
mathematically;
profit =( selling price - cost price)/cost price * 100%
here our profit is 120% with the cost price being $45. we plug these values
120 = 45-cp/cp * 100%
120cp = 100(45-cp)
120cp = 4500 -100cp
220cp = 4500
cp = 4500/220 = $20.45
His profit is selling price - cost price = 45 - 20.45 = $24.55
His profit selling same shoe for $25 is 25-20.45 = $4.55
Answer:
The angles are 6,4,8and2 hope this helps
