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
anyanavicka [17]
3 years ago
10

Complete the square f(x) = x^2 + 4x - 8  PLZ help me ;c

Mathematics
1 answer:
Semenov [28]3 years ago
6 0
Ok, first group x terms
f(x)=(x²+4x)-8
factor out quadratic coefient (no need but that's the step)
f(x)=1(x²+4x)-8
take 1/2 of the linear coefient and square it
4/2=2, (2)²=4
add positive and negative of it insides the parenthasees
f(x)=1(x²+4x+4-4)-8
factor perfect square
f(x)=1((x+2)²-4)-8
distribute
f(x)=1(x+2)²-4-8
f(x)=1(x+2)²-12
and, now if we wanted to find the x intercepts where f(x)=0 then
0=1(x+2)²-12
12=(x+2)²
+/-2√3=x+2
-2+/-2√3=x

x=-2+2√3 or -2-2√3
that is where the x intercept are

and completed square form is
f(x)=(x+2)²-12
You might be interested in
The table below shows the number of miles Maggie ran and the number of calories she burned.
gulaghasi [49]

Answer:

The dependent variable is number of calories burnt.

Step-by-step explanation:

The dependent variable of an experiment is the variable under study, i.e. it is the variable that is being observed for any changes, when the other variables are changed.

The independent variable is the variable that is being altered to observe the changes in the dependent variable.

A dependent variable can be affected by one or more than one independent variables.

In this case, the data provided represents the number of calories Maggie burned based on the number of miles she ran.

So, the amount of calories burnt is dependent upon the number of miles covered running.

So, the dependent variable is the number of calories burnt and the independent variable is the number of miles she run.

Thus, the dependent variable is number of calories burnt.

4 0
3 years ago
A linear function that represents the number of video games purchased at an electronics store is compared to a different linear
serg [7]

Answer:

See there y-intersept and if slope is negative or positive to see if they intersect

7 0
2 years ago
I need help pls!!!!!!!!
KATRIN_1 [288]
The y-intercept is -7
4 0
3 years ago
7. Which of the verbal descriptions best matches the function below? <br><br> f(x)=0.02x+150
slega [8]

Gene earns 2% interest after depositing $150 into his account , Option D.

<h3>What is a Function ?</h3><h3 />

A function is a law that relates an independent variable and a dependent variable with each other.

The function given is

f(x) = 0.02 x +150

Option D , Gene earns 2% interest after depositing $150 into his account

So this verbal description matches the function given as it represents , the total account balance of Gene .

Therefore Option D is the correct answer.

To know more about Function

brainly.com/question/12431044

#SPJ1

6 0
1 year ago
The parabola y=x^2 is shifted up by 8 units
dangina [55]

Answer:

It becomes y = x^2 + 8.

Step-by-step explanation:

The equation of the new parabola is y = x^2 + 8.

6 0
3 years ago
Other questions:
  • The ratio of Holly's age to that her aunt is 4:9. When holly was born her aunt was 15 years old. How old is holly's aunt now?
    14·1 answer
  • Which equation represents the sentence?
    12·2 answers
  • Priya tried to solve an equation step by step. \qquad\begin{aligned} \dfrac f{0.25}&amp;=16\\\\ \\ \dfrac{f}{0.25} \cdot0.25&amp
    5·2 answers
  • Among fatal plane crashes that occurred during the past 6565 ​years, 613613 were due to pilot​ error, 7575 were due to other hum
    14·1 answer
  • Help please i'll give u brainliest
    15·2 answers
  • There are 8.54 grams of sugar in 7 servings of strawberries. How many grams of sugar are in a single serving of strawberries?
    10·1 answer
  • K sooo, i have solve for x and the equation is 5x-7=3x+3 now move all constants to the to the other side of the equation 2x-7=3
    11·2 answers
  • F(x)=3x-5 find (2) <br> f(2)=
    14·1 answer
  • Reflect (-5,-3) over the -axis.
    7·1 answer
  • The distance around a circle is equal to the Diameter Times pi
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!