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professor190 [17]
3 years ago
13

Perform the indicated operation 5 1/5 -3 1/2

Mathematics
1 answer:
Zina [86]3 years ago
7 0

Answer:


26/5 - 7/2

find common denominator which is 10

52/10 - 35/10 =

17/10 which simplifies to 1 7/10

the answer is B


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marysya [2.9K]
The fraction equal to .66 is <span>33⁄50</span> 

 
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In which step did Rob make a mistake?
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Explanation:

Using the PEMDAS rule:
P = parentheses
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Step 1: 6 + 4 x 3 - 10/5

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Rani, Anita, Jassi and Zoyz are each given a piece of wire of the same length. They bend the wire into different shapes as shown
LenKa [72]

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Saw this question before. The answer is Anita' square.

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3 years ago
The price of a sandwich decreases from $6 to $4. What is the percent decrease in the price of the sandwich?
Anettt [7]

Answer:

33.33%

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7 0
3 years ago
Find the length and width of a rectangle that has the given area and a minimum perimeter. Area: 162 square feet
Gnom [1K]

Answer:

The width and length of rectangle is 12.728 m

Step-by-step explanation:

Let the length of the rectangle = L

let the width of the rectangle = W

The subjective function is given by;

F(p) = 2(L + W)

F = 2L + 2W

Area of the rectangle is given by;

A = LW

LW = 162 ft²

L = 162 / W

Substitute in the value of L into subjective function;

f = 2l + 2w\\\\f = 2(\frac{162}{w} )+2w\\\\f = \frac{324}{w} + 2w\\\\\frac{df}{dw} = \frac{-324}{w^2} +2\\\\

Take the second derivative of the function, to check if it will given a minimum perimeter

\frac{d^2f}{dw^2}= \frac{648}{w^3} \\\\Thus, \frac{d^2f}{dw^2}>0, \ since,\frac{648}{w^3} >0 \ (minimum \ function \ verified)

Determine the critical points of the first derivative;

df/dw = 0

\frac{-324}{w^2} +2 = 0\\\\-324 + 2w^2=0\\\\2w^2 = 324\\\\w^2 = \frac{324}{2} \\\\w^2 = 162\\\\w= \sqrt{162}\\\\w = 12.728 \ m

L = 162 / 12.728

L = 12.728 m

Therefore, the width and length of rectangle is 12.728 m

3 0
3 years ago
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