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
Andreyy89
3 years ago
13

The value of 4x^2-5 when x=3

Mathematics
2 answers:
attashe74 [19]3 years ago
8 0

Answer:

31

Step-by-step explanation:

substitute 3 for x in 4x^2-5:  4(3)^2 - 5 = 4(9) - 5 = 36 - 5 = 31

Veseljchak [2.6K]3 years ago
7 0

Answer:

31

Step-by-step explanation:

Plug in 3 for x in the expression:

4(3²) - 5

Note that there are no parenthesis (other than the one I added, to make it easier for you. Follow the order of operations, PEMDAS. PEMDAS = Parenthesis, Exponents (& Roots), Multiplication, Division, Addition, Subtraction, and the left -> right rule.

First, solve the exponent:

4(3²) - 5 = 4(3 * 3) - 5 = 4(9) - 5

Next, solve the multiplication:

4(9) - 5 = 36 - 5

Finally, subtract:

36 - 5 = 31

31 is your answer.

~

You might be interested in
Jasmine has to mix 3/4 cup of flour and 3/8 cup of cornmeal she has a container that holds 1 cup can jasmine mix the flour and c
Sladkaya [172]
Because 3/4 and 3/8 is more than one cup, Jasmine will not be able to mix the flour and the cornmeal in the container.

3/4+3/8=6/8+3/8=9/8
5 0
2 years ago
Read 2 more answers
Algebra II help I'm struggling
Dmitry [639]
Answer is B

total cost = $30 + 0.5 *(miles driven)
.................
7 0
3 years ago
Benito runs 1/10 of a mile each day. which shows how to find the number of days it will take for benito to run 3/5 of a mile
damaskus [11]

I would say  divide 3/5 by 1/10

8 0
3 years ago
What is the product of -9(5-2x)
nata0808 [166]
-45+18x is the answer
Hope this helped <3
5 0
3 years ago
Read 2 more answers
What is 622,119 rounded to the nearest hundred?
adell [148]

Answer:

The answer is 622,100

Step-by-step explanation:

The answer is 622,100 because the 1 in the tens place is smaller then a 5 so it gets rounded down to 0.

So, the answer is 622,100

Hope this helps! :)

6 0
3 years ago
Other questions:
  • A wedding ring costs £13000. Work out the price after a 11% increase
    7·2 answers
  • Write a real world situation that can be represented by the expression x - 12 subtraction
    13·1 answer
  • The surface area of the box of cereal displayed is 2x^2+48x+88. What is the value of x if the box of cereal has a total surface
    5·1 answer
  • Divide the reciprocal of 5/6 by the reciprocal of the reciprocal of 5/6
    9·2 answers
  • 85% of the people survey thought the price of the car wash was reasonable. If 164 people thought the cost of the car wash was re
    15·1 answer
  • Find three consecutive odd integers so that the product of the second and third integer is 63
    15·1 answer
  • Select the comparison that is correct. (2 are right) A eighty-one tenths &gt; 8.27 B Six and seventy-nine thousandths 50.453 D 3
    8·2 answers
  • Please help me understand!!​
    8·2 answers
  • Identify any x intersepts and y intersepts
    12·1 answer
  • Free po1nts!<br> enjoy! (:
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!