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
Novosadov [1.4K]
3 years ago
6

BRAINLIEST PLUS 30 points

Mathematics
2 answers:
Alborosie3 years ago
8 0

Answer:

x = 4 and y =2

Step-by-step explanation:

Because we are given that x+3y = 10

and the perimeter gien is 54 cm so:

Subtract both sides that equal to 10 + 10 =20 from 54, we get:

54 -20 = 34

We got:

3x - y up and 7x - 2y down so when we add it together, we got:

10x -3y = left perimeter after subtract 20 = 34

We got:

x + 3y = 10 (1)

10x - 3y = 34 (2)

Add (1) and (2) together, we got:

11x = 34 +10

11x = 44

Divide both sides by 11, we got:

x = 4

We know now x = 4, change 4 into x + 3y =10 to get y so we got:

x + 3y =10

4 + 3y = 10

Subtract 4 from both sides, we got:

3y = 6

Divide both sides by 3, we got:

y = 2

So x = 4 and y =2

Hope this helped:3

Anastasy [175]3 years ago
5 0
You already know x+3y is 10 as they are both indicated as being the same on the diagram.

We then subtract 10 and 10 from the total perimeter, to figure out the top and bottom’s total length.

54-10-10=34

Now we add the top (3x-y) to the bottom (7x-2y) by collecting like terms.

3x-y+7x-2y=10x-3y

We form the simultaneous equation now.

x+3y=10
10x-3y=34

From here we can form a single equation.

x+3y+10x-3y=10+34

+3y and -3y cancel each other out so we now have:

x+10x=10+34
which is:
11x=44
Divide 44 by 11.
x=4

We now substitute x=4 into x+3y which we know equals 10.

(4)+3y=10
Subtract 10 by 4.
3y=6
Divide 6 by 3.
y=2

We now have the answer x=2 and y=4.
You might be interested in
A flower bed has a perimeter of 144 inches. Wjat is the largest possible area for the flower bed?
Vadim26 [7]
The answer I is 60 feet for this one.
3 0
3 years ago
Read 2 more answers
Alex has 64 cubes with dimensions in feet (ft), like the one shown. He uses all the cubes to fill a box shaped like a larger rec
Vilka [71]

Answer:

The volume, in cubic feet, of the larger rectangular prism is 64 cubic feet

Step-by-step explanation:

Length of small cube =\frac{1}{2} ft

Volume of each cube = Side^3

Volume of each cube =(\frac{1}{2})^3

                                    =\frac{1}{8} ft^3

Volume of 64 cubes = 64 \times \frac{1}{8}

Volume of 64 cubes = 8 ft^3

We are given that He uses all the cubes to fill a box shaped like a larger rectangular prism.

So, Volume of 64 cubes = Volume of rectangular prism

So, If there are 64 of these cubes in the larger prism, then the volume, in cubic feet, of the larger rectangular prism is 64 cubic feet

7 0
4 years ago
What is the center and radius of a circle with the equation: (x-25)^2 + (y+17)^2 = 361
vovikov84 [41]

Answer:

centre=(25,-17)

radius=19

Step-by-step explanation:

comparing with the formula

(x-h)^2+( y-k)^2=r^2

5 0
4 years ago
12. The Opera is collecting monies in advance for ticket sales. The tickets cost $17.50 each.
Debora [2.8K]

Answer:

The number of tickets they have sold in advance are summed up with the following equation and solution:

Equation: \frac{6842.50}{17.50} [the final answer should be in dollars]

Solution: The Opera sold 391 tickets in advance.

Step-by-step explanation:

First: Review some background information:

Let's see what the problem gives us to answer it. I'll bold out the important parts:

The Opera is collecting monies in advance for ticket sales. The tickets cost $17.50 each. If they have collected $6842.50 already, then how many tickets have they sold in advance?

We know how much the tickets cost and how much money they have earned from selling tickets, we can find out how much tickets they have sold.

Second: Solve the problem:

We can solve this problem using many ways, but I'm just going to pick one. We will use proportions to answer this. Now thoughts might be going through your head like this: What is this guy saying? What in the world is proportions? Well hopefully you learn from this example (Please don't take offense if you <em>do</em> know how to do proportions).

First we set up two fractions. One ticket costs $17.50, so we will use it to set up our first fraction: \frac{1}{17.50}. We don't know how many tickets all together cost $6842.50 so we will use the variable: x. Now, we can set up our second fraction. x tickets costs $6842.50 so our second fraction will be: \frac{x}{6842.50}. Now we must use cross multiplication. We multiply the numerator of the first fraction times the denominator of the second fraction, and then we multiply the denominator o the first fraction times the numerator of the second fraction. That's what we would do usually. But now, since we have a variable, we must use cross multiplication to solve for this variable. So we multiply the the numerator of the first fraction times the denominator of the other fraction and then we divide that answer times the denominator of the first fraction (You don't have to set it up like this).So let's solve this question:

\frac{1}{17.50}  \frac{x}{6842.50}

1 x 17.50 = 17.50

6842.50 ÷ 17.50 = 391

So our equation is 6842.50 ÷ 17.50, and our solution is 391 tickets

Topic: Proportions

6 0
3 years ago
The graph of a linear equation contains the points (3,11)and (-2,1). What point also lies on the graph
pochemuha
(0,0) is a point that also lays on the graph
3 0
3 years ago
Other questions:
  • Which of the following graphs would represent the solution set for y&lt;6x-2
    15·2 answers
  • What is the value of x in the equation x – y = 30, when y = 15?<br><br> 4<br> 8<br> 80<br> 200
    11·2 answers
  • During his versus non school football team Wade made 5 of 9 field goals he tried during his second season he made 11 of the 15 f
    12·1 answer
  • Juan is deciding between two cars to purchase. Car a depreciates annually at a rate of 3.5%, while car b depreciates monthly at
    8·1 answer
  • Martin has 5 cups of flour if he needs 1/4 cups of flour for one jumbo cookie how many jumbo cookies can he make?
    13·2 answers
  • Universal pet place.
    5·1 answer
  • Find the following limit. Limit of StartFraction StartRoot x + 2 EndRoot minus 3 Over x minus 7 EndFraction as x approaches 7 Wh
    11·2 answers
  • I’ll give brainliest help ASAP thank you so much:)
    10·2 answers
  • Five of the interior angles of a hexagon are 90°, 100°, 110°, 120° and 130°.
    7·1 answer
  • question 8(multiple choice worth 5 points) (03.05 mc) a cylindrical well is 25 meters deep and has a diameter of 1.8 meters. app
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!