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erma4kov [3.2K]
3 years ago
10

Para ampliar uma sala quadrada, foram acrescentados 4 metros em seu comprimento e 2 metros em sua largura, conforme a figura. Qu

al polinômio apresenta a área dessa sala após a ampliação? *
a) x² + 4x + 8
b) x² + 6x + 8
c) x² + 2x + 8
d) x² + 8
e) 2x + 6
Mathematics
1 answer:
ollegr [7]3 years ago
3 0

Answer:

b) x^2 + 6x + 8

Step-by-step explanation:

Para ampliar la habitación cuadrada, se agregaron 4 metros de largo y 2 metros de ancho, como se muestra en la figura.

Deje que la longitud y el ancho de la habitación antes de la expansión sean x.

La nueva longitud de la sala es (x + 4).

El nuevo ancho de la sala es (x + 2).

La nueva área de la sala será:

(x + 4)(x + 2)\\x^2 + 2x + 4x + 8\\x^2 + 6x + 8\\\\

Esa es la nueva área de la habitación.

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What's 7 hours - 30mins ?
Naddik [55]

Answer:

390 mins (or) 6 hours 30 mins

Step-by-step explanation:

7 hours = 420 mins

420 mins - 30 mins = 390 mins

390 mins = 6 hours 30 mins

Have a nice day!

8 0
3 years ago
Frances can complete 91oil changes in 7 days. How many oil changes can Frances complete in 11days? oil changes
Natali [406]

Answer:

143

Step-by-step explanation:

lets make a fraction:

so

91 oil changes/7days

lets take "x" as the unknown # of oil changes:

so

x/11

91/7=x/11

we can cross multiply:

91*11=7*x

1001=7x

143=x

so 143 oil changes in 11 days

Hope this helps!

4 0
3 years ago
Read 2 more answers
Can someone helpppp please I’m struggling!!
a_sh-v [17]
The answer is 31
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5 0
3 years ago
Which inequality describes this graph?
Alborosie

Answer:

x≠5

Step-by-step explanation:

An open circle means "less than" or "greater than", this means that anything is greater than or less than where the circle is placed. So, when an open circle is placed on a number line without any arrow, this means that that number is not equal to x.

5 0
2 years ago
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Please help me IDk this at all!!!!
jasenka [17]
It would help if you find common denominator... 12
so 1/3 times 4 both the numerator and denominator
4/12

and 3/4 times by 3 both the numerator and denominator
9/12

the recipe calls for 4/12 cup of oil and you have 9/12

two batches would be 8/12 cups of oil, you have 9/12 that is just enough for the recipe for two batches...

now to simplify it again, 1/3 + 1/3 = 2/3 and 2/3 is less than 3/4 
the answer would be the upper right
3 0
3 years ago
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