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Ksju [112]
3 years ago
11

If Marge has 14 2/5feet of chain And she wants to find how many 3/8 foot long pieces she can make. how many pieces will she have

?
Mathematics
2 answers:
alexgriva [62]3 years ago
4 0

Answer:  The number of pieces is 38.

Step-by-step explanation:  Given that Marge has 14\dfrac{2}{5} feet of chain that she wants to cut into \dfrac{3}{8} foot long pieces.

We are to find the number of pieces that she will have after cutting.

Let, 'n' be the number of pieces that she can make.

Therefore, we must have

\dfrac{3}{8}\times n=14\dfrac{2}{5}\\\\\\\Rightarrow \dfrac{3}{8}n=\dfrac{72}{5}\\\\\\\Rightarrow n=\dfrac{72\times 8}{3\times5}\\\\\\\Rightarrow n=\dfrac{576}{15}\\\\\\\Rightarrow n=38.4.

Thus, she can make 38 pieces from the chain.

const2013 [10]3 years ago
3 0
She can make 246.4 3 / 8 foot long pieces
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Z varies jointly with x, and y, and z=7 when x= 2, y= 2
fomenos

Answer:

56

Step-by-step explanation:

Complete question:

Z varies jointly with x and y , x=2 and y=2, z=7. Find z when x=4 and y=8 using joint variation . (I need the problem worked out step by step)

If z varies jointly with x, and y, this is expressed as;

z = kxy

If z=7 when x= 2, y= 2

7  = k(2)(2)

7 = 4k

k = 7/4

To get z when x= 4 and y = 8

z = kxy

z =7/4 (4)(8)

z = 7*8

z = 56

Hence the value of z is 56

7 0
3 years ago
HELP ASAP WITH THIS QUESTION
alexgriva [62]
Hey there (again)

x = 2y  \\ y = -2  \\ x = 2(-2) \\x= -4 \\ \\ \\ w + xy + 4x^2  = 2\\ w+-4(-2) + 3(-4)^2 = 2 \\ w + 8 + 3(16) = 2 \\ w + 8 + 48 = 2 \\ Subtract56: w + 56 =2 \\ 56 - 56 (Cancel) \\ 2 - 56 = -54 \\ w = -54

Answer: B  the simplification performed in step 2 is invalid or incorrect

Good luck on your assignment and enjoy your day 

~MeIsKaitlyn:)
5 0
3 years ago
A repairman charges $55 for a home visit plus $45 per hour for the time he spends making repairs. How many hours did he work if
levacccp [35]

Answer:

3.5

Step-by-step explanation:

6 0
3 years ago
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Which function family are these 3? thanks..​
Julli [10]

Answer:

1) Function; Linear Function (y=x)

2) Function; Exponential Function (y=bˣ)

3) Not a function.

Step-by-step explanation:

So, let's go through each table of values. I'm also going to graph them (see attached graphs) because it will make things simpler and provide a visual.

First, also recall what the definition of a function is. A function is a function if and only if an x only has <em>one</em> distinct y-value. No x can have two or more y-values. For instance, (1,2) and (1,3) is <em>not</em> a function between the x repeats. So, let's go through the choices:

1)

We have the table as shown. Let's plot the points. See TABLE 1:

First, there are no repeating x-values, so we can be sure that this is indeed a function.

Looking at the graph, we can see that this resembles a linear graph. So, the parent function of this is a line.

The parent function of a line is:

y=x

So, table 1 is associated with a linear function.

2)

Let's again plot the points. See TABLE 2.

Again, there are no repeating x-values, so this is also a function.

Looking at the graph, this resembles an exponential function. The function increases slowly at first but starts increasing increasingly fast. The parent function is thus an exponential function.

So, table 2 is associated with an exponential function.

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First, notice how all the x-coordinates are repeating. And since they do <em>not</em> equal the same thing, this is not a function.

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7 0
3 years ago
Read 2 more answers
What is the area of this composite figure?
Natalija [7]

Answer:

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Step-by-step explanation:

The figure is made up of a square and a circle. The circle is divided in half and each piece is set on one side of the square. This means that the diameter of the circle is equal to the length of the sides of the square, 2 inches.

The area of the square can be found by multiplying length times the width:

2*2=4

The area of the square is 4 inches, and since we multiplied two lengths, we square the value:

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A=\pi r^2

The radius is half of the diameter, so the radius is 1. Insert values and solve:

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The area of the circle is equal to π. Add the values together:

4+\pi =7.14

The area of the figure is 7.14 in²

:Done

4 0
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