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
maw [93]
3 years ago
7

4 plates and 3 cups cost 20.70 dollars. 5 plates and 4 cups cost 26.40 dollars . each plates cost the same amount as the other p

lates , and each cup cost the same amount as the other cups. what is the cost of 1 plates ? what is the cost of 1 cup?
Mathematics
1 answer:
Basile [38]3 years ago
7 0
Here, we need to construct 2 linear equation.
Let x be the plate and y be the cup.
1) 4x + 3y = 20.70
2) 5x + 4y = 26.40

From equation 1, we solve for y.
3y = 20.70 - 4x
y = (20.70 - 4x) / 3

Substitute into equation 2.
5x + 4((20.70 - 4x) / 3) = 26.40
5x + 27.60 - 5.33x = 26.40
-0.33x = 26.40 - 27.60
-0.33x = -1.2
x = 3.64

We already get value of x. Now, calculate for value of y.
y = (20.70 - 4x) / 3
y = (20.70 - 4(3.64)) / 3
y = 2.05

The cost for 1 plate is 3.64 dollars and 1 cup is 2.05 dollars.
You might be interested in
Geometry..already got hw
miss Akunina [59]

the second option

Step-by-step explanation:

Line CD is parallel to line AB, shown by the arrows in the middle of both of the lines.

5 0
3 years ago
You are wrapping a gift box that is 16 inches long, 7 inches wide, and 9 inches tall. Find the amount of wrapping paper you need
Svetach [21]

Answer:

638 in.²

Step-by-step explanation:

Assuming you need to cover just the surface area of the box with no overlaps, and the shape is a rectangular prism, then you need to find the surface area of a rectangular prism.

SA = PH + 2LW

where

P = perimeter of base = 2(L + W),

H = height of prism

L = length of base

W = width of base

SA = 2(16 + 7)(9) + 2(16)(7)

SA = 638

5 0
3 years ago
Jill earn $15 per hour babysitting class a transportation fee of five dollars per job. Write a formula for E, Ji Jill earn $15 p
daser333 [38]
Since you know the amount of what she earns you would use the number 15 and you dont know how long she worked you would put "x" next to the 15. so you would have 15x and then put a plus 5 to show her transportation fee. so you would have the equation of 15x+5:) and instead of x use h to show hours because h=hours

you feel me?
great!
6 0
3 years ago
I REALLY NEED AN ANSWER FAST! Which statement about the diagram is true?
Marina86 [1]

Answer:

D

Step-by-step explanation:

To keep it short, refer to triangle exterior angle theorem.

Edit: If you want the full explanation,

A isn't the answer. The triangle exterior angle states that the measure of the 2 triangle interior add up to the the exterior angle of the other interior angle within the triangle.

Meaning that

measure of angle 1 equal the measure of 3 and 4 combined.

B. is wrong they are equal to each other because angle 2 is equal to angle 2

angle 1 is equal to angle 3 and 4

So they are equal

C.Wrong unless it a 30 60 90 triangle or 45 45 90 triangle, C is wrong

D. is right since measure of angle 4 and angle 3 add up to angle 1, angle 4 would be lesser than angle 1.

3 0
3 years ago
Read 2 more answers
What is 45 x 45 x 65B <br> what is 45 dived by 45 <br> what is acarology
kompoz [17]
If by you mean kilobytes, then:

131.62500 kilobytes

45/45=1

And Acarology is the study of mites and ticks, the animals in the order Acarina. It is a subfield of arachnology, a subdiscipline of the field of zoology. A zoologist specializing in acarology is called an acarologist. Acarologists may also be parasitologists because many members of Acarina are parasitic.
3 0
2 years ago
Read 2 more answers
Other questions:
  • A copy machine makes 28 copies per minute. How many copies does it make in 5 minutes and 45 seconds?
    13·1 answer
  • The figure shows two parallel lines KL and NO cut by the transversals KO and LN:
    15·2 answers
  • If Tom can swim 10 laps in 32 minutes. What would his expected time for 15 laps?
    5·1 answer
  • The endpoints of AB are A(9,4) and B(5,-4). The endpoints of its image after a dilation ar A(6,3) and B(3,-3). a. explain how to
    14·1 answer
  • box of candy hearts contains 52 hearts, of which 19 are white, 10 are tan, 7 are pink, 3 are purple, 5 are yel- low, 2 are orang
    13·1 answer
  • У = 3(х – 4)2 – 8<br> How do you write this in standard form
    8·1 answer
  • The cost price of a washing machine is $15,480 if the selling priceis $17,000 what is the profit or loss
    11·1 answer
  • Help as soon as possible!!<br><br> Answer only if you know! <br><br> At least answer one of them!
    6·1 answer
  • Which of the following is the statement of the Zero Product Property?
    6·1 answer
  • From his eye, which stands 1.63 meters above the ground, Isaac measures the angle
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!