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
Aleks [24]
2 years ago
12

What is the value of 2x^2+6x-9 when x = 3

Mathematics
2 answers:
viva [34]2 years ago
8 0

Answer:

45

Step-by-step explanation:

We have the equation 2x² + 6x + 9 and are asked to find the value when x =3.

To solve this, all we need to do is substitute all variables with "x" to 3. Then do the properties :

2x² + 6x + 9

2(3)² + 6(3) + 9

Do exponents first :

2(9) + 6(3) + 9

Now multiply the numbers with parenthesis next to them :

18 + 18 + 9

Add to get the answer :

45

klemol [59]2 years ago
5 0

Answer:

27

Step-by-step explanation:

We have the equation:

2x^2+6x-9

If x = 3, we can substitute 3 in for the x values.

We get the equation:

2(3^{2}) + 6(3) - 9

Using PEMDAS:

First, evaluate the power.

3^2 = 9

Then, multiply the numbers.

2 x 9 + 6 x 3 - 9

We get:

18 + 18 - 9

Simplify.

18 + 18 = 36

36 - 9 = 27

Hope this helps.

You might be interested in
If point R is on segment ST, then segment RS is the same as segment ST rue or false
jonny [76]
Look it up its simple
6 0
3 years ago
Tommy has the following data:
VMariaS [17]
20 hope this helped <333333333333333333333
3 0
3 years ago
Tickets to a school play cost $1.50 for a student and $2.50 for an adult. Clara sold 5 tickets for a total of $10.50. How many o
joja [24]
<span> 2 student tickets
</span><span>=1.50+1.50+2.50+2.50+2.50=10.50</span>
6 0
2 years ago
What is the simplified form of the following expression √1/169
kiruha [24]
1/13 

Hope this helps :)


6 0
3 years ago
Read 2 more answers
Solve only questions 1,3,5,6
Anestetic [448]

Answer:

wheres the question?

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Can someone help me with this question
    5·1 answer
  • A class has 16 boys and 24 girls.Of the 16 boys ,3 are left handed.Of the 24 girls, 2 are left handed.If a student is chosen at
    8·2 answers
  • WHO EVERY GETS THIS RIGHT GETS 20 PTS
    5·1 answer
  • What is 2 3/5 minus 1 1/7
    13·2 answers
  • Investors buy a studio apartment for $ 150,000. Of this​ amount, they have a down payment of $ 15,000. Their down payment is wha
    7·1 answer
  • If angle 1 measures 98° and angle 2 measures 72°, then the two angles are supplementary. true or false
    12·2 answers
  • Help pls.............
    12·1 answer
  • What is the slope of 2x+y=3
    7·1 answer
  • Solve by factorisation 2x^2+3x-20=0
    10·1 answer
  • Solve for d.<br><br> 1.17=d/3<br> d =
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!