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Katen [24]
3 years ago
11

Question 19 I know the answer is 1.5 but how

Mathematics
1 answer:
katrin2010 [14]3 years ago
5 0
Suppose the width of the path is x. 
the dimensions of the extended rectangle are (12+x+x), and (16+x+x) 
(12+2x)(16+2x)=285
4x²+56x+192=285
4x²+56x-93=0
Not easy to factor it, so use the quadratic formula to solve:
x={-56+√[(56²-4*4*(-93)]}/2*4 or x={-56-√[(56²-4*4*(-93)]}/2*4
x=1.5 (ignore the negative solution.)
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¿ cuál será el volumen de una pirámide hexagonal si las aristas de la base miden 8cm, la apotema vale9.93cm y su altura es de 28
dem82 [27]

Answer:

2224.32 cm³

Step-by-step explanation:

La fórmula para el volumen de una pirámide hexagonal = 1/3 (1/2 × P × a) × h

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P = Perímetro =

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Volumen de la pirámide hexagonal = 2224.32 cm³

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3 years ago
What is the final amount if 1920 is increased by 5% followed by a further 15% increase? Give your answer rounded to 2 DP.
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25g = 25,000 <br> g=1000<br> im doing math homework and need help asap!
andreyandreev [35.5K]
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