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
KatRina [158]
3 years ago
14

Help me with this please

Mathematics
1 answer:
alina1380 [7]3 years ago
6 0
If you assign variables to the problem, it can make things a lot simpler. Lets say chairs are x and tables are y. Therefore you have:
2x+6y=40 
5x+3y=25
Now you can isolate the variable of one equation and put it into another (it doesn't matter which. I'm going to manipulate the top equation to plug into the bottom one).
2x=40-6y 
x=20-3y
Now I plug into bottom equatioin:
5(20-3y) + 3y=25
100-15y+3y=25
100-12y=25
-12y=-75
y=$6.25
Now you can plug in y in either equation to get x. 
2x+6(6.25)=40
37.5+2x=40
2x=2.5
x=1.25
So it costs $6.25 for each table and $1.25 for each chair. If you think about it, it would make sense for the table to cost more for the chair. 
You might be interested in
1) What is the measure of Zx for the quadrilateral inscribed in a circle?
Viktor [21]

Answer:

1) D

2) D

Step-by-step explanation:

1. Use 360 - x˚ - y˚ - 117˚ - 62˚

2. Recognize that 1) can be either 62 or 63

3. Plug either number into x to get y

4. y = 118 when x = 63

5 0
3 years ago
36/g=4/3<br> Solve for equation
vodomira [7]
36 divided by 4 = 9
so then you take 3 times 9 which is 27 so the answer is
g=27
7 0
3 years ago
Read 2 more answers
Consider the following incomplete mapping diagrams.
zlopas [31]

Answer:

Answer attached

Step-by-step explanation:

3 0
3 years ago
Which mixed number is equivalent to 708/100
Brut [27]
Hello there!

The correct answer is 7\frac{8}{100}.

Hope This Helps You!
Good Luck :)
3 0
3 years ago
Find the absolute maximum and absolute minimum values of f on the given interval. (If an answer does not exist, enter DNE.)
vodka [1.7K]

Answer:

absolute max is 120 and absolute min is -8

Step-by-step explanation:

Find critical numbers

f'(x) = 3x^2 - 12x + 9 = 0

= 3(x^2 - 4x + 3) = 0

3(x-3)(x-1) = 0

(x-3) = 0 or (x-1)=0

x = 1,3

Test them!

x<1     Sign of f' on this interval is positive

1<x<3 Sign of f' on this interval is negative

x>3    Sign of f' on this interval is positive

f(x) changes from positive to negative at x = 1 which means there is a relative maximum here.

f(x) changes from negative to positive at x = 3 which means there is a relative minimum here.

Test the endpoints to find the absolute max and min.

f(-1) = -8

f(1) = 12

f(3) = 8

f(7) = 120

The absolute maximum value of f is 120 and the absolute minimum value of f is -8.

7 0
3 years ago
Other questions:
  • I am redesigning a rectangular prism in geometry where I have to minimize the surface area while maintaining the same volume. I
    15·1 answer
  • Determine the independent variable (__________,y). what word goes in the blank space??
    10·1 answer
  • Find angle A using sin-1
    14·1 answer
  • Danica has a temperature of 102.1. A normal temperature is 98.6. How many degrees above normal is Danica’s temperature?
    10·1 answer
  • Ian brought chocolate And vanilla cupcakes to school for his birthday 75 students decide to take a cupcake and 60% of them fit v
    11·1 answer
  • A swimmer swam 48 kilometers in d days. What is the value of d if the averge amount swan was 3.2 kilometers?
    5·1 answer
  • Last year, Michael opened an investment account with $5400. At the end of the year, the amount in the account had decreased by 2
    11·1 answer
  • You may remember that the perimeter of a rectangle is P=2(W+L) where W is the width and L is the length.
    6·1 answer
  • Drag and drop the correct answer​
    13·1 answer
  • A football field has the shape of a rectangle with dimensions of 100 yards long and 53 1/3
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!