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kvv77 [185]
3 years ago
11

What is the value of 7 + z ÷ 2, when z = 10?

Mathematics
2 answers:
Len [333]3 years ago
8 0

To solve this problem, we must substitute the given value for z (10) into the expression and then simplify, as modeled below:

7 + z / 2

7 + 10/2

Now, in order for us to simplify this expression, we must remember the order of operations, outlined by PEMDAS. This tells us that we should compute values in parentheses first, then exponents, after that multiplication and division, and finally addition and subtraction. This means that we must perform the division in our problem and then the addition after. This is modeled below:

7 + 10/2

(Divide 10/2)

7 + 5

(Find the sum)

12

Therefore, your answer is 12.

Hope this helps!


mafiozo [28]3 years ago
5 0

Plug in 10 for z. Remember to follow PEMDAS (Parenthesis, Exponents (& roots), Multiplication, Division, Addition, Subtraction)

7 + 10/2

Divide 10 with 2

10/2 = 5

Add 5 with 7

5 + 7 = 12

12 is your answer

hope this helps

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3 years ago
In a certain computer, the probability of a memory failure is 0.01, while the probability of a hard disk failure is 0.02. If the
ratelena [41]

Answer:

We need to remember that we have independent events when a given event is not affected by previous events, and we can verify if two events are independnet with the following equation:

P(A \cap B) = P(A) *P(B)

For this case we have that:

P(A) *P(B) = 0.01*0.02= 0.0002

And we see that 0.0002 \neq P(A \cap B)

So then we can conclude that the two events given are not independent and have a relationship or dependence.

Step-by-step explanation:

For this case we can define the following events:

A= In a certain computer a memory failure

B= In a certain computer a hard disk failure

We have the probability for the two events given on this case:

P(A) = 0.01 , P(B) = 0.02

We also know the probability that the memory and the hard drive fail simultaneously given by:

P(A \cap B) = 0.0014

And we want to check if the two events are independent.

We need to remember that we have independent events when a given event is not affected by previous events, and we can verify if two events are independnet with the following equation:

P(A \cap B) = P(A) *P(B)

For this case we have that:

P(A) *P(B) = 0.01*0.02= 0.0002

And we see that 0.0002 \neq P(A \cap B)

So then we can conclude that the two events given are not independent and have a relationship or dependence.

8 0
3 years ago
What is 6,000 people voted in the election how many were from 18 to 29 years old?
Ilia_Sergeevich [38]
6000*10%=600
600 people voted at at aged 18 to 29 years old.
4 0
3 years ago
Dos cuadrados de lado
Kaylis [27]

La franja amarilla del rectángulo tiene un área de 30 centímetros cuadrados.

<h3>¿Cuál es el área de la franja amarilla del rectángulo?</h3>

En este problema tenemos un rectángulo formado por dos cuadrados que se traslapan uno al otro. La franja amarilla es el área en la que los cuadrados se traslapan. La anchura del rectángulo es descrita por la siguiente ecuación:

(10 - x) + 2 · x = 17

Donde x se mide en centímetros.

A continuación, despejamos x en la ecuación descrita:

10 + x = 17

x = 7

Ahora, el área de la franja amarilla se determina mediante la fórmula de area de un rectángulo:

A = b · h

Donde:

  • b - Base del rectángulo, en centímetros.
  • h - Altura del rectángulo, en centímetros.
  • A - Área del rectángulo, en centímetros cuadrados.

A = (10 - 7) · 10

A = 3 · 10

A = 30

El área de la franja amarilla del rectángulo es igual a 30 centímetros cuadrados.

Para aprender más sobre áreas de rectángulos: brainly.com/question/23058403

#SPJ1

8 0
1 year ago
3y-4x-29=2y-5x-4 solve by elimination
Umnica [9.8K]

Answer:

x = 25

y = 25

Step-by-step explanation:

hope it helps!

8 0
3 years ago
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