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pishuonlain [190]
3 years ago
7

PLZZ HELP Will give brainlist plz help its for my 9 week exam

Mathematics
1 answer:
kotykmax [81]3 years ago
4 0

Answer:

Its commutative property

Step-by-step explanation:

It means u can move stuff around so ya

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What is the value of -3(7+5)/3^2 +9(2)
MatroZZZ [7]

<em>answer = 14 \\ solution \\  \frac{ - 3(7 + 5)}{ {3}^{2} }  + 9(2) \\  =  \frac{ - 3 \times 12}{9}  + 18 \\  =  \frac{ - 36}{9}  + 18 \\  =   \frac{ - 36 + 18 \times 9}{9}  \\  =   \frac{ - 36 + 162}{9}  \\  = \frac{126}{9}  \\  = 14 \\ hope \: it \: helps \\ good \: luck \: on \: your \: assignment</em>

4 0
3 years ago
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Use the number line below, where RS = 7y +3, ST = 5y +8, and RT = 83.
Llana [10]

Answer:

Step-by-step explanation:

Given the vectors based on the number line as RS = 7y +3, ST = 5y +8, and RT = 83, the equation RS+ST = RT will be used to get the unknown.

Substituting the given equation into the expression we will have;

7y +3+5y +8 = 83

collect like terms'

7y+5y+3+8 = 83

12y + 11 = 83

12y = 83-11

12y = 72

y = 72/12

y = 6

b) Substitute y = 6 into RS and ST

Given RS = 7y+3

RS = 7(6)+3

RS = 42+3

RS = 45

For ST;

ST = 5y+8

ST = 5(6)+8

ST = 30+8

ST = 38

6 0
3 years ago
Por qué crees que el valor de la media no aparece en la tabla y es un número decimal?
vovikov84 [41]

La media no aparece en la tabla ya que se requiere un calculo para encontrarla, además, es un número decimal pues corresponde a la suma de los resultados dividida en el número de días.

<h3>¿Qué es la media?</h3>

En matemáticas, la media o promedio corresponde a la suma de todos los valores dividida en el número total de valores. En este caso la media corresponde a la suma de las temperaturas dividida en el número de días.

Calcular la media:

Usando la formula anterior, calculemos la media:

  • 16 + 19 +17 + 20 + 22 + 18 +15 = 127/7 = 18.7

El valor de la media es 18.7, al respecto se puede observar que:

  • Este valor no aparee en la tabla pues no corresponde a la temperatura de ningún día sino que debe ser calculado.
  • Este valor es decimal, lo que se común al hallar la media ya que se suman todos los valores y se dividen por un número determinado.

Nota: Esta pregunta esta incompleta. Aquí esta la parte faltante:

Aprenda más sobre promedio en: brainly.com/question/8917478

3 0
3 years ago
Select all irrational numbers
Sliva [168]

\sqrt{9}=3\notin\mathbb{I} \\\sqrt{12}=2\sqrt{3}\in\mathbb{I} \\\sqrt{16}=4\notin\mathbb{I} \\\sqrt{20}=2\sqrt{5}\in\mathbb{I} \\\sqrt{25}=5\notin\mathbb{I}

Hope this helps.

6 0
3 years ago
I brought 5 tickets. The tickets cost $170, including a $20 cover charge. How much did each ticket cost in equation format
WINSTONCH [101]

I think the answer is $870

7 0
3 years ago
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