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steposvetlana [31]
3 years ago
13

X=7. 3(x+6) +2x * help? heh heh

Mathematics
1 answer:
Katen [24]3 years ago
6 0

Answer:

x=5.277

Step-by-step explanation:

X=7.3(x+6)+2x

x=7.3x+43.8+2x

x-7.3x-2x=43.8

-8.3x=43.8

x=5.27710843373

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Una persona asegura que su casa tiene forma rectangular y que el perímetro de la misma es de 18 m y que además, su área es de 21
leva [86]

Considerando las fórmulas para el perímetro y el área de un rectángulo, hay que se chega en una <u>eccuación cuadrática sin solución</u>, o sea, las medidas no son posibles y la persona estaba mintiendo.

<h3>¿Cuál es la fórmula para el perímetro y el área de un rectángulo?</h3>

Considerando que las dimensiones son l y w, hay que:

  • El perímetro es: P = 2(l + w).
  • El área es: A = lw.

El <u>perímetro es de 18 m</u>, o sea:

2(l + w) = 18

l + w = 9

l = 9- w.

El <u>área es de 21 m²</u>, o sea:

lw = 21

(9- w)w = 21

-w² + 9 - 21 = 0

w² - 9w + 21 = 0

El discriminante es dado por:

D = 9² - 4 x 1 x 21 = -3.

El discriminante negativo implica que la <u>eccuación cuadrática no tiene solución</u>, o sea, las medidas no son posibles y la persona estaba mintiendo.

Puede-se aprender más a cerca de el perímetro y el área de un rectángulo en brainly.com/question/26475963

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4 0
1 year ago
Please help me solve this equation 2x+y=10
krek1111 [17]
This is the answer
2x + y = 10 \\ y =  - 2x + 10

if substitute 1 and 2 and 3 as x then the points will be :
\binom{x}{y}   \:  \:  \:  \:  \:  \: \binom{1}{8} \:  \:  \:  \:  \:  \:  \binom{2}{6}   \:  \:  \:  \:  \:  \:  \binom{3}{4}


and that's the picture



good luck

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3 years ago
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z=3-4i

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4 0
1 year ago
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Answer: 58unit²

Step-by-step explanation:

We will take 1 square as 1 unit

We will count the number of squares in in this figure.

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please click thanks and mark brainliest if you like :)

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