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mash [69]
3 years ago
8

HELP PLEASEEEEE THIS WAS DUE 17 DAYS AGO!!!!

Mathematics
2 answers:
Blizzard [7]3 years ago
7 0

Answer:

x= 2, y= 1

Step-by-step explanation:

x= 2y

2x +5y =9

substitute x

2 *2y +5y = 9

4y +5y = 9

9y = 9

y =1

x= 2*y = 2*1= 2

Natalka [10]3 years ago
7 0

Answer:

x= 2

y=1

Step-by-step explanation:

2*2y+5y=9

y=1

x=2*1

x=2

(x,y) = (2,1)

Check:

2=2*1

2*2+5*1=9

2=2

9=9

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danny has a trianglular pyramid all triangles are conguent what is the surface area?​the height is 6in and the width is 5in
Gre4nikov [31]

Answer: The answer is 60 square inches.

Step-by-step explanation:  Given that Danny has a triangular pyramid where all the four triangles are congruent. The height and base of one triangle are 6 inches and 5 inches respectively. We are to find the surface area of the pyramid.

The area of one triangle is given by

A=\dfrac{1}{2}\times\textup{base}\times\textup{height}=\dfrac{1}{2}\times 5\times 6=15~\textup{sq. inches}.

Since the pyramid consists of four congruent triangles, so the surface area of the pyramid will be

S=4\times A=4\times 15=60~\textup{sq. inches}.

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3 years ago
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elixir [45]

Answer:

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Step-by-step explanation:

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givi [52]

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