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
Fynjy0 [20]
3 years ago
14

Evaluate the expression 3x² + 2x - 4 for x =-2.

Mathematics
1 answer:
marin [14]3 years ago
4 0

Answer:

4

Step-by-step explanation:

3x² + 2x - 4

3(-2)² + 2(-2) - 4

3(4) - 4 - 4

12 - 4 - 4

12 - 8

= 4

You might be interested in
Solve for x^2-2x+1=0
seraphim [82]

Answer:

x=1

Step-by-step explanation:

x^2-2x+1=0\\

We will start by using the quadratic formula.

\frac{-(-2)+-\sqrt{(-2)^2-4(1)(1)}}{2(1)}

We will simplify that and get:

\frac{-(-2)}{2(1)}

So our answers would be:

x=1

7 0
3 years ago
The function f(x) = 1/3x + 5 and g(x) = x^2 + 4x are shown graphed below. The negative solution to the equation f(x) = g(x) is c
sergij07 [2.7K]

Answer:

Step-by-step explanation:

4 0
3 years ago
Janaina is trying to solve the following equation by completing the square: x^2+18x-9 = 0.She successfully rewrites the above eq
valentinak56 [21]
The Answer Is :
c = x^2 + 2bx + b^2
3 0
3 years ago
Calculator
irina [24]

Answer:

61.27 cm

Step-by-step explanation:

refer to picture

5 0
3 years ago
Evaluate the integral:<br> dx / e^(pie*x) from 2 (upper bound) to 0.
kenny6666 [7]
Substitution:
u = - π x
d u = - π d x
d x = - d u / π 
----------------------
-1/ \pi  \int\limits^2_0 {e ^{u} } \, du =- \frac{e ^{- \pi x} }{ \pi } = \\ -1/ \pi (e ^{-2 \pi } -1) = \\ = \frac{1}{ \pi } - \frac{1}{ \pi e ^{2 \pi } }
7 0
3 years ago
Other questions:
  • Katie bought some flour.
    6·1 answer
  • There are 2 seats on the left side on each row and 3 seats on the right side there are 90 seats on the right side of the plane h
    14·1 answer
  • Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
    8·1 answer
  • Please help on two math questions. I don’t understand how to do them.
    9·1 answer
  • Find the exact length of the arc s in the figure. (Assume r = 3 and θ = 106°.)
    10·1 answer
  • Which shows how the distributive property can be used to evaluate 7x8 4/5?
    15·2 answers
  • Sebastian drank 3.5 bottles of Gatorade y esterday. Each bot tle contained 1.2 pints of Gatorade. What was the number of pints o
    10·2 answers
  • In a store the number of dogs is 12 times greater than 3 times of cats. If there are 21 dogs in the store, how many cats are in
    11·1 answer
  • Please help me im to Dum. Please show all work.
    11·2 answers
  • CORRECT ANSWER = BRAINLIEST
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!