1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tatyana61 [14]
3 years ago
14

Ya idk how to do this plz help explain if you can

Mathematics
1 answer:
Svet_ta [14]3 years ago
5 0

Answer:

  92 attendees had activity cards

Step-by-step explanation:

Let x be the number of students with activity cards. Then 130-x is the number without, and the total revenue is ...

  7x +10(130 -x) = 1024

  7x +1300 -10x = 1024 . . . . eliminate parentheses

  -3x = -276 . . . . . . . . . . . . . collect terms; subtract 1300

  x = 92 . . . . . . divide by 3

92 students with activity cards attended the dance.

_____

<em>Comment on the solution</em>

Often, you will see such a problem solved using two equations. For example, they might be ...

Let 'a' represent the number with an activity card; 'w' the number without. Then ...

  • a+w = 130 . . . . the total number of students
  • 7a +10w = 1024 . . . . the revenue from ticket sales

The problem statement asks for the value of 'a', so you want to eliminate w from these equations. You can do that using substitution. Using the first equation to write an expression for w, you have ...

  w = 130-a

and making the substitution into the second equation gives ...

  7a +10(130 -a) = 1024

This should look a lot like the equation we used above. There, we skipped the extra variable and went straight to the single equation we needed to solve.

You might be interested in
A college student wants to determine if degree of introversion/extroversion is associated satisfaction with life. She has a samp
andrew11 [14]

Answer: Correlation

Step-by-step explanation:

The statistics that should be used to determine if scores on these two surveys are related to each other is referred to as correlation.

Correlation indicates the degree by which the variables that are given are linearly related. Correlation is used in the testing and determination of the strength of association that can be found between two variables.

In this case, since the student wants to determine if degree of introversion or extroversion s associated satisfaction with life, the correlation will be appropriate to use.

7 0
3 years ago
Jason and his friends want to go bowling on Friday night. Southgate Bowling Alley charges $30 shoes and $6 per hour to bowl, whi
alekssr [168]

Answer:

2 hours

Step-by-step explanation:

Slope represents the hourly rate.

Constant represents initial price.

y = 30 + 6x \\ y = 36 + 3x \\ 30 + 6x = 36 + 3x \\ 3x = 6 \\ x = 2

3 0
3 years ago
Help me with this question, please
anzhelika [568]

Answer:

Part 1: [ -4 = -8 ]

Part 2: Inconsistent

Step-by-step explanation:

<u>Part 1</u>

1. Move all terms that don't contain x to the right side:

3x - 6y+6y = -12+6y

= 3x = -12 + 6y

2. Isolate x:

\frac{3x}{3} = \frac{-12+6y}{3}

x = -4 + 2y

3. Substitute the new expression into the original:

-4 + 2y - 2y = -8

4. Simplify:

-4 + 0 = -8

[ -4 = -8 ]

<u>Part 2</u>

The two solutions are not equal in value, so, we can conclude that the system of equations has no solution, or is inconsistent.

hope this helps!

7 0
2 years ago
The Xbox X is back in stock just in time for black Friday. Retailers are now offering the Xbox one S for 40% of the original pri
oksian1 [2.3K]

Answer:

230$ discount

Step-by-step explanation:

It costs 345$ now with a game pass

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

6 0
3 years ago
Can someone please help me i need this really bad.
nekit [7.7K]
The answer is the third one
6 0
3 years ago
Other questions:
  • Fill in the reason that justifies the step to solve for x in the diagram.
    5·2 answers
  • A students home is 3.25 miles from school. A soda shop is located 900 feet farther down the road from school. What is the total
    11·1 answer
  • alex has 3 baseballs. he brings 2 baseballs to school. what fraction of his baseballs does alex bring to school?
    14·1 answer
  • Why -2 is a natural number not a whole number
    5·1 answer
  • Which statements are true about the ordered pair (10, 5) and the system of equations?
    10·1 answer
  • Anyone want to join a tournament in fort.nite im looking for players on brainly and putting them up against each other my You.Tu
    10·2 answers
  • Jamie kept track of the total hours and minutes she worked this week at the local health food store.
    14·1 answer
  • How to convert 25.12% into a fraction of 10,000
    13·1 answer
  • I need help please and thank you
    13·1 answer
  • Is 1/3 divided by 8 is it 1/24?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!