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2 years ago

The 9th graders are selling tickets to raise

Mathematics

1 answer:

Sidana [21]2 years ago

3 0

Answer:

There were 30 children and 10 adults.

Step-by-step explanation:

Since they sold tickets to adults and childrens, the sum of those tickets must be equal to the total tickets that were sold, so we can mount our first equation as shown below:

adult + children = 40

Each adult ticket costs $9 and each children costs $5 and the total recieved was $240, therefore:

9*adult + 5*children = 240

We can mount the following equation system:

adult + children = 40

9*adult + 5*children = 240

We will multiply the first equation by -5 and sum both equations:

-5*adult -5*children = -200

9*adult + 5*children = 240

4*adult = 40

adult = 40 / 4

adult = 10

adult + children = 40

children = 40 - adult = 40 - 10 = 30

There were 30 children and 10 adults.

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Is |-6| a negative integer

stiv31 [10]

Answer:

NO. |-6| = 6 - a positive integer

Step-by-step explanation:

|a| = a for a ≥ 0

examples

|2| = 2, |0| = 0, |0.56| = 0.56

|a| = -a for a < 0

examples

|-2| = -(-2) = 2, |-100| = -(-100) = 100, |-0.25| = 0.25

Therefore your answer:

|-6| = 6 > 0

3 0

3 years ago

Graph the system of linear equations. negative StartFraction one-half EndFraction y equals StartFraction one-half EndFraction x

inna [77]

The solution to the given system is (3,8).

<u>Step-by-step explanation:</u>

To draw a graph system for a linear equation,

Step 1: Consider two x values and draw a line joining the new points.

y = x + 5 ⇒1

y = 2x + 2 ⇒2

For both equations substitute two random values for x.

Let us Consider x=0 and x=10.

For equation 1,

y=x+5. y=x+5

y=0+5. y=10+5

y=5 y=15

The new points for equation 1 are (0,5) and (10,15).

Draw a big straight line passing through these two points.

For equation 2,

y=2x+2. y=2x+2

y=0+2. y=20+2

y=2 y=22.

The new points for equation 1 are (0,2) and (10,22).

Again, draw a big straight line passing through these two points.

Step 2: Mark the intercepting point and that will be the solution for the given system.

For this system, the solution is (3,8).

To check this answer equate both equations,

x+5=2x+2.

2x-x=5-2.

x=3.

Substitute x value in any of the equation,

y=3+5.

y=8.

So the resulted point is (3,8).

6 0

3 years ago

Read 2 more answers

Pls answer this right now i need it so much i'll give you brainleist and follow you thank you so much.

BlackZzzverrR [31]

The answer to this could be A in my opinion because an algebraic equation does not always have an equal sign but the variable is usually a letter

4 0

2 years ago

Read 2 more answers

Given f(x) = 70 + 11x, find x when f(x) =158

Mumz [18]

Answer:

$\huge \boxed{x = 8}$

Step-by-step explanation:

f(x) = 70 + 11x

To find the value of x when f(x) =158 , equate f(x) to 158

We have

$70 + 11x = 158 \\ 11x = 158 - 70 \\ 11x = 88$

Divide both sides by 11

$\frac{11x}{11} = \frac{88}{11} \\$

We have the final answer as

Hope this helps you

5 0

3 years ago

How to convert 0.6666666667 to a fraction

Arada [10]

If you got this answer from a calculator, it rounds the last decimal point because there is not enough room on it to show that it is a repeating decimal.

Really, the decimal is .666666666666...... , or 2/3

This is one of the most common repeating decimals that will come up in later math practices. It would be a helpful conversion to memorize.

Hope this helped!! :)

4 0

2 years ago