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Novay_Z [31]
3 years ago
9

I will mark you brainliest if you answer this!

Mathematics
2 answers:
asambeis [7]3 years ago
8 0

Answer:

I think the first one i don't know for sure sorry if it's wrong

NeX [460]3 years ago
3 0

Answer: A

Step-by-step explanation:

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WRITE AN EXPRESSION FOR 3 MORE THAN X ​
Leviafan [203]

Answer:

x+3

Step-by-step explanation:

If it says "more" than its probably talking about addition

4 0
3 years ago
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Pls help it's due today.
statuscvo [17]
The answer is the second choice: 24 gallons of gasoline
8 0
3 years ago
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Representar las rectas a, b y c y determinar si son paralelas (o perpendiculares) dos a dos. A: y=−3x+5 | b: y =x/3+2 | c: y=−3x
Anettt [7]

Answer:

A y C: paralelas

B y A: perpendiculares

B y C: perpendiculares.

Step-by-step explanation:

Sea una recta:

f(x) = a*x + b

Donde a es la pendiente y b es la ordenada al origen.

Otra recta va a ser paralela a esta si tiene la misma pendiente, pero una diferente ordenada al origen, por ejemplo:

g(x) = a*x + c

Y una recta perpendicular a f(x) tendría una pendiente p = -(1/a)

Entonces podemos escribir la línea perpendicular a f(x) como:

h(x) = -(1/a)*x + c

Ahora veamos nuestras líneas:

A(x) =  y = −3*x+5

B(x) = y = x/3+2 = (1/3)*x + 2

C(x) = y = -3*x + 1

Primero veamos cuáles son paralelas:

A(x) y C(x) tienen la misma pendiente (-3) y diferente ordenada al origen, entonces  A y C son paralelas.

Sabiendo que la pendiente de A y C es -3, una línea perpendicular a esta tendría una pendiente:

-(1/-3) = 1/3

Que es justamente la pendiente que tiene la línea B, entonces podemos concluir que B es perpendicular a las líneas A y C.

A y C: paralelas

B y A: perpendiculares

B y C: perpendiculares.

7 0
3 years ago
In 2018, there were about 41 million teenagers (ages 10-19) in the United States. They each sent an average of 800 text messages
Allushta [10]

Answer:

3.28*10^(10) text messages.

Step-by-step explanation:

We know that there are about 41,000,000 teenagers in the US.

If each one of they sent an average of 800 text messages, then the total number of text messages sent in a month is something about:

Total number of messages = 41,000,000*800 = 32,800,000,000

Now we want to write this in scientific notation.

To do it, we need to count the number of digits at the left of the decimal point, if there are N total digits, we can write our number as:

3.28*10^(N - 1)

Where we now have only one digit at the left of the decimal point.

Here we have 11 digits.

Then we can write this number as:

3.28*10^(11 - 1)

3.28*10^(10)

5 0
3 years ago
Ivan is saving money to buy a game. So far he has saved 8, which is one-fourth of the total cost of the game. How much does the
Agata [3.3K]

Answer:

The game costs 38.

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3 years ago
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