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FrozenT [24]
3 years ago
6

Write an equation for the following situation: 15 less than a number is equal to 12

Mathematics
1 answer:
weeeeeb [17]3 years ago
3 0
Break it down
"15 less than " means -15
"a number" means unknown or placeholder means x
"is equal to" means '='
'12' means 12
-15+x=12
add 15
x=27
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James got 5 questions wrong out of 40 questions what percent of the questions did he get correct
Arte-miy333 [17]
8% of them right, 40/5



8 0
4 years ago
1. The factors of a2 - 9 are
Mazyrski [523]

Answer:

Step-by-step explanation:

1. (a+3)(a-3) = a²+3a-3a-9 = a²-9

2. a linear equation consists of a polynomial of degree one.

5 0
3 years ago
First one to Answer it correctly gets 5 stars :)
faust18 [17]

Answer:

im not the best but i think 200 or 400 m

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
HELLLLLLLLPPPPPPPPPPPP,
Marat540 [252]

Answer:

-1/12

Step-by-step explanation:

12x-3 = -4

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6 0
3 years ago
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

#SPJ1

4 0
2 years ago
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