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
gregori [183]
3 years ago
6

Solution of this equation

Mathematics
1 answer:
lara31 [8.8K]3 years ago
5 0
2.5y + 3x = 27
5x - 2.5y = 5

Align the variables to make solving this easier.

2.5y + 3x = 27
-2.5y + 5x = 5

You can see that the 2.5y and -2.5y cancel each other out. Then add the 3x and 5x, and 27 + 5.

3x = 27
5x = 5

8x = 32

Divide both sides by 8.

x = 4

Now input that x into one of the equations to get y. 

2.5y + 3(4) = 27
2.5y + 12 = 27
2.5y = 15
y = 6

The answer to this system of equations is x = 4, y = 6. (4, 6)
You might be interested in
Determine whether each of these functions is O(x^2 ).
otez555 [7]

Answer:

  • (a)  no
  • (b)  yes
  • (c)  no
  • (d)  no

Step-by-step explanation:

"Of the order x^2" means the dominant behavior matches that of x^2 as x gets large. For polynomial functions, the dominant behavior is that of the highest-degree term.

For other functions, the dominant behavior will typically be governed in some other way. Here, the rate of growth of the x·log(x) function is determined by log(x), which has decreasing slope as x increases.

Only answer selection B has a highest-degree term of x^2, so only that one exhibits O(x^2) behavior.

3 0
3 years ago
Read 2 more answers
How many square feet of outdoor carpet will we need for this hole? Need pronto
RUDIKE [14]

Answer:

63 ft^2

Step-by-step explanation:

We know that the area for the rectangle is 72 feet squared.

We also know that the area for the triangle is 9 feet squared.

To find out the area of the whole thing you subtract 72-9 whcih gives you 63.

6 0
3 years ago
What is the answer to this question
timama [110]

Answer:

b^6z^612a^5

Step-by-step explanation:

The first step is to combine like terms, and multiply them together first. Since multiplication is commutative, it doesn't matter in what order you do it. Therefore, this can be rewritten as (2a^2\cdot 6a^3)\cdot(b^4\cdot b^2)\cdot(z\cdot z^5)=(12a^5)\cdot(b^6)\cdot(z^6)=b^6z^612a^5. Hope this helps!

7 0
3 years ago
Read 2 more answers
LM=9, NR=16, SR=8. Find the perimeter of △SMP.
Amanda [17]

Answer:

<h2>perimeter of △SMP = 25</h2>

Step-by-step explanation:

The perimeter of the triangle △SMP is the sum of al the sides of the triangle.

Perimeter of △SMP = ||MS|| + ||MP|| + ||SP||

Note that the triangle △LRN, △LSM, △MPN and △SRP are all scalene triangles showing that their sides are different.

Given LM=9, NR=16 and SR=8

NR = NP+PR

Since NP = PR

NR = NP+NP

NR =2NP

NP = NR/2 = 16/2

NP = 8

From △LSM,  NP = PR = <u>MS</u><u> = 8</u>

Also since LM = MN, MN = 9

From △SRP, SR = RP = <u>PS =  9</u>

Also SR =<u> MP = 8</u>

From the equation above, perimeter of △SMP = ||MS|| + ||MP|| + ||SP||

perimeter of △SMP = 8+8+9

perimeter of △SMP = 25

5 0
4 years ago
Write 4.51 as a mixed number and as an improper fraction.
anyanavicka [17]

it will be 451/100 as an improper fraction! :)

7 0
3 years ago
Other questions:
  • What does this equal? <br>-1/5p=-16
    15·1 answer
  • Which polynomial is equivalent to this expression if n≠-1n≠-1? 3+n−2n21+n?
    14·2 answers
  • 25386 to the nearest 1000
    6·2 answers
  • Please help !!!!!!!!!!!!!
    7·1 answer
  • Is 11/12 a rational or irrational number
    13·1 answer
  • The radius of a cylindrical water tank is 4.5 ft, and its height is 8 ft. What is the volume of the tank?
    6·1 answer
  • Someone please help me I’ll give out brainliest please dont answer if you don’t know
    12·1 answer
  • Help me with this question, please!
    11·1 answer
  • PLEASE ANSWER ASAP !!!! Y
    12·2 answers
  • In total, how many students are there that play football?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!