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marusya05 [52]
3 years ago
11

a piece of yellow yarn was 230 inches long. after 90 inches had been cut from it, the piece of yellow yarn was twice as long as

a piece pf blue yarn. at first how mich longer was the yellow yarn than the blue yarn?
Mathematics
1 answer:
AlladinOne [14]3 years ago
7 0

The yellow yarn was 160 inches longer than the blue yarn.

https://www.cpsb.org/site/handlers/filedownload.ashx?moduleinstanceid=8283&dataid=7357&FileName=4.HW.17.pdf

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A concrete stepping stone measures 20 inches square. What is the area of 30 such tiles?
ratelena [41]
A single stepping stone as you have said is 20 inches sqaure. This means that it has an area of 20.

All you would need to do then is multiply 20 by 30 to get the area of thirty tiles. The result of this would be 600.

If you mean one side of the stepping stone is 20 inches then you would multiply 20 by 20 to get the area of one, since that would be multiplying length times width (the area formula). The area of one would result in 400 and you would then multiply this by the thirty tiles (400 times 30) to get 12000.
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3 years ago
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Quadrilateral CDEF is a rhombus. What is ECF?
romanna [79]

Answer:

Step-by-step explanation:

∠ECF=\frac{1}{2}(180-114)=\frac{1}{2}(66)=33°

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3 years ago
Look at the drawing of a triangle within a rectangle. The triangle and the rectangle have the same base, b, and height, h.
lara [203]

the total area of sections 1 and 2 is 48  square units !

<u>Step-by-step explanation:</u>

Here we have ,  The triangle and the rectangle have the same base, b, and height, h.  If the area of the triangle is 48 square units,We need to find what is the total area of sections 1 and 2 . Let's find out:

According to question , we have a triangle with same base and height as of rectangle inside a rectangle ! Following are the parameters of rectangle:

Length= b\\width= h\\

but , Area of rectangle = length(width) . Also , Area of triangle :

⇒ \frac{1}{2} (b)(h) = 48

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So , Area of rectangle =  (b)(h) = 96 . Total area of section 1 & 2 is given by :

⇒ 96=48+Area

⇒ Area=48

Therefore , the total area of sections 1 and 2 is 48 square units !

7 0
3 years ago
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23 decreased by the product of 44 and an unknown number is 199. What is the value of the unknown number?
Vedmedyk [2.9K]
Go step by step

23 is decreased by : 23 -

The product of 44 and an unknown number

Let x represent the unknown number
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The product of 44 and an unknown number : 44x

Equals 199 : = 199

Now, put that all together

23 - 44x = 199

Now, begin to solve

Subtract 23 on both sides of the equation

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Divide both sides of the equation by -44 to isolate x

x = -4

The unknown number is -4
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3 years ago
A bakery makes 40 different kinds of muffins. 25% of the muffins have chocolate as an ingredients. How many kinds of muffins hav
Mumz [18]

Answer:

10 muffins

Step-by-step explanation:

10 is 25% (one-fourth) of 40

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