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
densk [106]
4 years ago
8

Evaluate 5x²-3(x-2)+x for x=3​

Mathematics
1 answer:
Zepler [3.9K]4 years ago
3 0

Answer:

45

Step-by-step explanation:

Evaluate 5 x^2 - 3 (x - 2) + x where x = 3:

5 x^2 - 3 (x - 2) + x = 5×3^2 - 3 (3 - 2) + 3

3^2 = 9:

5×9 - 3 (3 - 2) + 3

3 - 2 = 1:

5×9 - 3 + 3

5×9 = 45:

45 - 3 + 3

45 + 3 = 48:

48 - 3

| 4 | 8

- | | 3

| 4 | 5:

Answer:  45

You might be interested in
Simplify each expression by combining like terms. 3n - 1 + 8n +5
Kay [80]

Answer:

3n-1+8n+5

3n+8n-1+5

11n+4

Let me know if this helps!

3 0
3 years ago
-5+4(7+k) please help with this equation!
Alex

Answer:

4k+ 23

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Complete the square to slove 3x^2+12x =9​
saveliy_v [14]
Answer:
(x + 2)² = 7
Step-by-step explanation:
We have to complete the square in the given equation
3x² + 12x = 9
3x² + 12x - 9 = 0
3[x² + 4x -3] = 0
3[x² + 2(2x) + 4 - 4 - 3] = 0
3[x² + 2(2x) + 4] - 3 × 7 = 0
3[x² + 2]² - 21 = 0
(x + 2)² = = 7
Therefore, the square form of the equation is (x + 2)² = 7

Hope this helps (:
8 0
3 years ago
mr burns class is taking a field trip to the planetarium. The trip will cost $27 for each student. There are 18 students in his
avanturin [10]
So, 27=30 and 18=20 rounded 

so what you would do now is multiply 30 x 20 and you get $600
3 0
4 years ago
Read 2 more answers
Micro Knowledge sells 5 times as many computers as Morse Electronics. The difference in sales between the two stores is 20 compu
nika2105 [10]

Answer:

Morse electronics sells 5 computers

Micro knowledge sells 25 computers

Step-by-step explanation:

The computation is shown below:

Let us assume the morse electronics computer be x

So the micro knowledge computers be 5x

And, the difference between them is 20

Now the equation is

5 x - x = 20

4x = 20

x = 5

Hence, the morse electronics sells 5 computers

While on the other hand the micro knowledge sells

= 5 × 5

= 25 computers

7 0
3 years ago
Other questions:
  • Hey can you please help me posted picture of question :)
    11·1 answer
  • kiyo used wire fencing to form a border around a circular region in his backyard if radius of the circular religion was 5 yards
    15·1 answer
  • Personal Finance You use an ATM to withdraw $20 from your checking account. The ATM receipt shows a balance of $168 after the wi
    11·1 answer
  • I need Help fast!!!!
    6·1 answer
  • What is (f + g)(x)?<br><br> f(x) = x^3 - x<br> g(x) = x^3 + 2x^2 - 10<br><br> (f + g)(x) = _______
    14·1 answer
  • I need help in this exercise
    15·1 answer
  • Will mark the brainliest
    15·1 answer
  • 1. A stereo speaker in the shape of a triangular pyramid has a height of 6 inches. The area of the base of the speaker is 11 squ
    10·1 answer
  • Helpp !!! <br> ii dont understand math :(
    15·2 answers
  • Solids
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!