MATHEMATICS HIGH SCHOOL

How are rectangular prims, triangle prims, and cubes different? How are they the same

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

a cube is a rectangular prism with all sides equal, and therefore all faces of equal area. A rectangular prism will have 4 faces of equal area and 2 faces of equal area. ... A rectangular prism has four faces that are rectangles and two faces that are squares. A cube has six faces that are squares.

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Simplify.13+(49−19)2

Enter your answer, as a simplified fraction, in the box.

Answers

Simplified :13+[2(10)]
13+20
Answer : 33

Suppose that a when a cell phone store charges 16$ for a car charger, it sells 92 units. When it drops the price to 15$ it sells 96 units. Assume that demand is a linear function of price. If each phone charger costs 1$ to make, what price should the store charge to maximize its profit?
If x is the number of times the price is reduced by one dollar.

Find a function for total profit with respect to x. A negative value for x will mean the price is increased.

Answers

D(x) = mx + c ; where x is selling price , c is constant, m is slope 
given D = 21 when x = $16 
21 = 16m + c ------------1) and also we know D = 24 unit, when x = $15, 
24 = 15m + c ------------2) 
subtract eqn 2) from eqn 1) we get 
-3 = m , and plug this value of m in eqn 1) we get 
21 = 16*(-3) + c => c = 69 
hence demand function 
D(x) = -3x + 69 
Cost price is C = $1 
Profit = Revenue - Cost price 
P(x) = Demand*Selling price - Cost per unit* Demand 
P(x) = (69 - 3x)*x - 1*(69 - 3x) 
P(x) = 69x - 3x² - 69 + 3x ; or 
P(x) = - 3x² + 72x - 69 -------------Answer 
Differentiate profit function with respect to x (selling price) 
dP/dx = -3*2x + 72 - 0 
0 = 72 - 6x ; plug dP/dx = 0 for maxima minima 
6x = 72 
x = $12 per unit --------Answer 
(Since d²P/dx² = -6 < 0 , hence profit will be maximum at x = $12 per unit 
and Demand would be D(@12) = 33 unit 
Revenue = 33*$12 = $396 
Cost = $1*33 = $33 
Max Profit = #396 - $33 = $363 

Josh was asked to solve the equation 15x-19=4x+11 His first step resulted in the equation 15x=4x=30 Describe what Josh did in his first step.

Answers

Answer:

Added 19 to each side

Step-by-step explanation:

15x-19=4x+11

Add 19 to each side

5x-19+19=4x+11+19

5x = 4x+30

Answer:

added 19 and 11

Suppose that you roll a pair of honest dice. If you roll a total of​ 6, you win​ $18; if you roll a total of​ 11, you win​ $72; if you roll any other​ total, you lose​ $9. Let X denote the payoff in a single play of this game. Find the expected value of a play of this game. Round your answer to the nearest penny.A.) -​ $0.50B.) −​ $1.00C.) ​$0D.) ​$0.75E.) −​ $0.75

Answers

You can roll a total of 6 by rolling (1, 5), (2, 4), (3, 3), (4, 2), or (5, 1). There are 36 total possible rolls that can be obtained, so you roll a total of 6 with probability 5/36.

You can roll a total of 11 by rolling (5, 6) or (6, 5), hence with probability 2/36 = 1/18.

Any of the other remaining 29 outcomes occurs with probability 29/36.

The expected value of your winnings is

$18*5/36 + $72*1/18 - $9*29/36 = -$0.75

so the answer is E.

What times 24 plus whag equals 1,947

Answers


THIS IS WHAT I KNOW 81.125 TIMES 24 EQUALS 1,947

Which statement best illustrates using the vertical line test to determine if the graph below is a function of x?The graph is not a function of x because the line x = 0 intersects the graph at two points.

The graph is a function of x because the line x = 5 does not intersect the graph.

The graph is not a function of x because the line y = 0 intersects the graph at two points.

The graph is a function of x because the line y = 5 does not intersect the graph.

Answers

Answer:

c yw

Step-by-step explanation:

Answer:

The answer is either a or c .

Step-by-step explanation:
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