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Alisiya [41]
3 years ago
7

I need help!!

Mathematics
1 answer:
mestny [16]3 years ago
4 0
I think the answer is +4
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9 2/3 as whole number
trapecia [35]

Answer:

Step-by-step explanation:

9 is a whole number 2 surge of 1 is 66 answer to 9.66

3 0
3 years ago
Janiyah is 2/3 years older than Hannah. Hannah is 1/4 a year older than Sia. If Sia is 10 1⁄2 years old, how old is Hannah?
Sever21 [200]

Hannah is 10 and 3/4 years old

Step-by-step explanation:

8 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
SimplIfy [(-49)÷7]÷(-7)]
Marysya12 [62]

Answer:

I think the answer is 1

Step-by-step explanation:

-49÷7=-7

-7÷-7=1

4 0
3 years ago
In a coffee shop, the average drink is currently $4.50 while the average pastry is $2.25. You've made a total of $5,250 today. W
Kamila [148]

Answer:

4.50x+2.25y=5,250  where x denotes number of drinks and y denotes number of pastries.

Step-by-step explanation:

Let x denotes number of drinks and y denotes number of pastries.

Cost of the average drink = $4.50

Cost of the average pastry = $2.25

Total amount = $5,250

Therefore,

4.50x+2.25y=5,250

6 0
3 years ago
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