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
Marrrta [24]
3 years ago
6

In the picture thank you

Mathematics
2 answers:
jonny [76]3 years ago
7 0

Answer:

1100 adults and 1400 students  

Step-by-step explanation:

Let S = students and A = adults.

We have two conditions.

(1)               5S + 10A = 18 000

(2)                    S + A = 2500     Subtract A from each side

(3)                          S = 2500 – A     Substitute (3) into (1)

 5(2500 – A) + 10A = 18 000     Remove parentheses

12 500 – 5A + 10 A = 18 000     Combine like terms

           12 500 + 5A = 18 000     Subtract 12 500 from each side

                           5A = 5500        Divide each side by 6

(4)                          A = 1100         Substitute (4) into (2)

                  S + 1100 = 2500         Subtract 1100 from each side

                             S = 1400

There were 1100 adults and 1400 students.

<em>Check: </em>

5 × 1400 + 10 × 1100 = 18 000         1400 + 1100 = 2500

       7 000 + 11 000 = 18 000                   2500 = 2500

                   1 8 000 = 18 000


dmitriy555 [2]3 years ago
5 0

Answer:

The correct answer is b) 1100 adults and 1400 students.

Step-by-step explanation:

To find this, set up a system of equations in which x is the number of students who attend and y is the number of adults who attend.

First start by creating an equation for money made.

5x + 10y = 18,000

Now write an equation for the amount that attend.

x + y = 2,500

Now multiply the bottom equation by -5 and add the equations together.

-5x - 5y = -12,500

5x + 10y = 18,000

5y = 5,500

y = 1,100

Since this is the number of adults, we can plug into an original equation to find the number of students.

x + y = 2,500

x + 1,100 = 2,500

x = 1,400

You might be interested in
What is (8.2*10^-3)*(2.0*10^2) in scientific notation
vovikov84 [41]

Answer:

See below

Step-by-step explanation:

(8.2*10^-3)*(2.0*10^2

= 8.2*2.0 * 10^(-3+2)

= 16.4 * 10^-1

= 1.64 * 10^0

or 1.64

5 0
3 years ago
Unit4: Congruent Triangles Hw 1: Classifying Triangles Gina Wilson (All things algebra) 2014
anastassius [24]

Answer:

  • 12. x = 6, side = 83
  • 13. x = 18, side = 29
  • 14. x = 11, sides = 74, 74 and 37
  • 15. x = 23, sides = 95, 95 and 108

Step-by-step explanation:

<em>11 is incomplete, can't solve</em>

12

<u>The triangle is equilateral, so all sides are equal, using one pair to find x:</u>

  • 13x + 5 = 17x - 19
  • 17x - 13x = 5 + 19
  • 4x = 24
  • x = 6

<u>Each side is:</u>

  • 13*6 + 5 = 78 + 5 = 83

13.

<u>Sides are equal as triangle is equilateral</u>

  • QR = 2x - 7
  • RS = 5x - 61
  • QS = x + 11

<u>Finding x by comparing two sides</u>

  • 2x - 7 = 5x - 61
  • 5x - 2x = 61 - 7
  • 3x = 54
  • x = 18

<u>Sides are equal</u>

  • 18 + 11 = 29

14.

<u>Equal sides of isosceles triangle:</u>

  • CD = DE
  • 9x - 25 = 6x + 8
  • 9x - 6x = 8 + 25
  • 3x = 33
  • x = 11

<u>Sides are</u>

  • CD = DE = 9*11 - 25 = 99 - 25 = 74
  • CE = 10*11 - 73 = 110 - 73 = 37

15.

<u>Equal sides of isosceles triangle WXY, WX = WY</u>

  • WX = 4x + 3
  • WY = 7x - 66
  • XY = 5x - 7
  • 4x + 3 = 7x - 66
  • 7x - 4x = 3 + 66
  • 3x = 69
  • x = 23

<u>Sides are:</u>

  • WX=WY = 4*23 + 3 = 95
  • XY = 5*23 - 7 = 108
6 0
3 years ago
Read 2 more answers
What is the perpendicular slope intercept form?​
In-s [12.5K]

Answer:

y = -1/2x + 2.5

Step-by-step explanation:

- slope of a perpendicular line is the negative reciprocal of the original slope (2 in this case) so y = -1/2 x + c

- to find c we substitute the values from the given point into the equation

(0) = -1/2*(5) + c

- rearrange and calculate and you'll get c = 5/2 or 2.5

- replace the value of c and now you've got y = -1/2x + 2.5

6 0
3 years ago
Select the correct answer from each drop-down menu.
irakobra [83]

Answer:

The length of side AC is 5 units.

The areas of triangle ABC is 10 square units.

Step-by-step explanation:

From point A (1,3) to point C (1,-2) is 5 units

To check this:

3 - (-2) = 3 + 2 =5

We're subtracting since the point went down (from positive 3 to negative 2)

Now for the area:

Area formula for a triangle: \frac{1}{2}bh = \frac{1}{2}⋅b⋅h

We already found the height (length) : 5

The base is from point C (1,-2) to point B (5,-2), which is 4 units

To check this:

5 - 1 = 4

Now that we have found the base and height, Let's solve:

\frac{1}{2}⋅4⋅5 = \frac{1}{2}⋅20 = 10

Our area is 10 square units.

Hope that helps :)

6 0
2 years ago
How would you write the equation with a slope of 2/3 and a y-intercept of (0,-3)?
rosijanka [135]

Answer:

y = (2/3)x - 3

Step-by-step explanation:

Slope-intercept form: y = mx + b

Note that:

y = (x , y)

m = slope

x = (x , y)

b = y-intercept.

The point is given to you. Note that:

(x , y) = (0 , -3) ∴

x = 0

y = -3

The slope = m = 2/3

Plug in the corresponding numbers to the corresponding variable:

y = mx + b

-3 = (2/3)(0) + b

-3 = 0 + b

b = -3

Plug in -3 for b in the equation:

y = mx + b

y = (2/3)x -3

y = (2/3)x - 3 is your equation.

~

5 0
3 years ago
Other questions:
  • {35 POINTS)What are the solutions of 2a^3-3a^2=8a-12 ?
    11·1 answer
  • What's 0.06 as a fraction in simplest form
    7·2 answers
  • Help on this problem
    10·1 answer
  • Can you plz help me with this 2.25f+5=13.5f+14​
    5·1 answer
  • complete the solution of the equation find the value of y when x equals -14 equation is 2 - x - 3 y equals 49 what is the answer
    8·1 answer
  • Explain how to simplify this expression: 4a + 19 - 3a - 7<br><br><br> WRITER
    5·2 answers
  • Four families went out for lunch. The total food bill came to $167. The families also left a $300 tip for the waitress.if each f
    6·2 answers
  • Write two more equations that you can solve using these same properties and solve them. 5 + y = 9
    13·1 answer
  • Given h(x)=-5x+1, solve for a when h(x) = - 4 .
    11·1 answer
  • Ok Last One What Is The Name Of This Zombie Baby? (Hint: The Thing In Her Arms Have Something To Do With Her Name)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!