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
Julie spends$5.62 at the store. michael apends 5 times as much as julie. jeremy spends $6.72 more than michal. how much does eac
allochka39001 [22]
5 x $5.62 = $28.10 is how much Michael spent.
$28.10 + $6.72 = $34.82 is how much Jeremy spent.
You already know that Julie spent $5.62
3 0
3 years ago
Read 2 more answers
State if the two triangles are congruent, if they are state how you know.
Mnenie [13.5K]

Answer:

I belive it would be HL because its defenitly not SSS

Step-by-step explanation:

HL Postulate is if the hypotenuse and leg of one right triangle are congruent to the hypotenuse and leg of another right triangle, then the two triangles are congruent.

4 0
3 years ago
Mr Johnson, the store owner, ordered 48 boxes of jawbreakers. Each box contained 392 pieces of candy. How many lawbreakers did M
n200080 [17]

Answer:

Mr. Johnson would have ordered 18816 jaw breakers.

Step-by-step explanation:

Multiply 392 by 48

5 0
3 years ago
HELP PLEASE QUICKLY!!! NO LINKS PLSS!!
dezoksy [38]
1a. (15x9)+(9x24)
135+216
351 ft squared
1b. 30 bags
3 0
3 years ago
Can someone help me!!!!!!
Sholpan [36]
It's A since tangent is just opposite over adjacent, 12 is the opposite and 5 is the adjacent
7 0
3 years ago
Other questions:
  • A square pyramid has a base area of 64 ft2. The pyramid’s total surface area is 224 ft2. What is the area of each triangular fac
    11·2 answers
  • Please do this quick!
    9·1 answer
  • Half a number x minus 5 is 11
    15·1 answer
  • 10cm 2years what is the unit rate as height per year
    12·1 answer
  • In the fraction below, which number is the numerator?
    14·1 answer
  • Find all the points having an x-coordinate of 4 whose distance from the point (-2,-1) is 10
    5·1 answer
  • Q6 Q21.) Verify the identity, write the left side numerator in terms of a sum or difference formula for sine or cosine, rewrite
    10·2 answers
  • Is 2/5 greater than less than equal to 2/3 * please tell me how to do the work! And not just tell the answer bc this is a test!*
    13·1 answer
  • N+3/8=-4<br> What is n?<br> Plz help I don't understand this math
    14·2 answers
  • What is the variable of f(3) in the function below? f(x) =2^x
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!