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yKpoI14uk [10]
4 years ago
14

I need help with number 6.

Mathematics
1 answer:
PilotLPTM [1.2K]4 years ago
6 0
To solve this question identify each of the variables. In this case both length and width.

Say length = x
Width = 2x + 8
Perimeter = 34

Perimeter = 2lengths + 2 widths
34 = 2(x) + 2(2x+8)
34 = 2x + 4x + 16
34 = 6x + 16
34 - 16 = 6x
18 = 6x
18/6 = x

X = 3 inches

The length of the rectangle is 3 inches.







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Answer:

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Step-by-step explanation:

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Here is a flower made up of yellow hexagons, red trapezoids, and green triangles. How many copies of this flower pattern could y
RUDIKE [14]

Answer:

Step-by-step explanation:Answer:

Part a) You could build 5 copies of the flower pattern  

Part b) You would have 40 red trapezoids left over

Step-by-step explanation:

The complete question in the attached figure

Part a)

Let

x -----> the number of yellow hexagons

y ----> the number of red trapezoids

z ----> the number of green triangles

we know that

The flower pattern has the following ratios

Find out how many copies of this flower pattern could you build if you had 30 yellow hexagons,50 red trapezoids, and 60 green triangles

1) For x=30

Divide 30 by 6 (remember that in one pattern there are 6 yellow hexagons)

Verify the quantity of y needed and the quantity of z needed

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Find the value of z

45<60 --->is ok

2) For y=50

Divide 50 by 2 (remember that in one pattern there are 2 red trapezoids)

Verify the quantity of x needed and the quantity of z needed

Find the value of x

150 > 30 ----> is not ok

3) For z=60

Divide 60 by 9 (remember that in one pattern there are 9 green triangles)

60/9=6.7 copies

Round down

6 copies -----> 6(9)=54 green triangles

Verify the quantity of x needed and the quantity of y needed

Find the value of x

36> 30 --->is not ok

therefore

You could build 5 copies of the flower pattern

Part b)

we know that

x:y:z=6:2:9

If you build 5 copies

1) You would use 5*6=30 yellow hexagons and you would have 0 hexagons left over

2) You would use 5*2=10 red trapezoids and you would have (50-10=40) trapezoids left over

3) You would use 5*9=45 green triangles and you would have (60-45=15) triangles left over

therefore

You would have 40 red trapezoids left over

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Math Help please!
ivolga24 [154]
<span>I believe you MEANT 8/(x^2-25)+9/(x-5)  Parentheses in this format are important...the way you typed it means (8/x^2)-25+(9/x)-5 which I doubt you mean. Anyway.

If you factor the first denominator you will see that it is equal to (x+5)(x-5). Division by zero has no meaning so x cannot equal -5 or 5.

If we multiply the second fraction by (x+5) we will have a common denominator of (x^2-25) for the entire equation leaving us with:

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The second problem is worked in exactly the same way, notice that there is no "solution" as there is no equal sign.  This is an "expression" not an "equation".</span>
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