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
BabaBlast [244]
3 years ago
7

If ​f(x)=x^2- 4 and ​g(x)=x^2 plus 2 x​,

Mathematics
1 answer:
gregori [183]3 years ago
6 0

Answer:

\huge\boxed{(f-g)\left(-\dfrac{1}{3}\right)=-3\dfrac{1}{3}}

Step-by-step explanation:

\text{We have}:\\\\f(x)=x^2-4\ \text{and}\ g(x)=x^2+2x\\\\(f-g)(x)=f(x)-g(x)\\\\\text{therefore}\\\\(f-g)(x)=(x^2-4)-(x^2+2x)=x^2-4-x^2-2x\\\\=(x^2-x^2)-2x-4=-2x-4\\\\(f-g)\left(-\dfrac{1}{3}\right)\to\text{put}\ x=-\dfrac{1}{3}\ \text{to the equation of the function}\ (f-g)(x):\\\\(f-g)\left(-\dfrac{1}{3}\right)=-2\left(-\dfrac{1}{3}\right)-4=\dfrac{2}{3}-4=-3\dfrac{1}{3}

You might be interested in
A gym has 2kg and 5kg weights. There are 10 disks in all. The total weight of 2kg and 5kg disks is equal to 29kg. Find the numbe
Simora [160]

Answer:

no of 5 kg disks is 3, and no of 2 kg disks is (10-3) i.e. 7

Step-by-step explanation:

Let the no of 2kg disks be a.

Let no of 5 kg disks be b.

2a+5b=29

a+b=10

Using substitution, we have

2(10-b) + 5b=29

20-2b+5b=29

20+3b=29

3b=9

b=3

So no of 5 kg disks is 3, and no of 2 kg disks is (10-3) i.e. 7

6 0
3 years ago
Myra uses an inverse variation function to model the data for the ordered pairs below. (2, 30), (3, 20), (4, 15), (5, 12), (6, 1
tino4ka555 [31]
"Note how for each (x,y) pair of points given we see that x*y = 60 
For instance, the point (4,15) has x = 4 and y = 15 so x*y = 4*15 = 60 
Another example: (x,y) = (6,10) means x = 6 and y = 10, so x*y = 6*10 = 60 
The fact that this is true for ALL of the points shown indicates we have an inverse variation of the form x*y = k where k = 60 in this case. 
Therefore, the answer is B.) An inverse function is the best model because the products of corresponding x- and y-values are equal."
4 0
3 years ago
Read 2 more answers
How may times can 24 go into 50​
ale4655 [162]

Answer:

Twice

Step-by-step explanation:

Because 24 x 24 would be 48

5 0
3 years ago
What is the standard form of this complex number? (24-10i)-(43+18i)
Yuki888 [10]

Answer:

-19-28i

Step-by-step explanation:

Simplify and write the answer in standard form, a+bi.

6 0
3 years ago
Someone please help me on number 5
NemiM [27]
I'm pretty sure it's 22%
If it's not, then I'm sorry!!
3 0
3 years ago
Read 2 more answers
Other questions:
  • Two different ways for 59
    10·1 answer
  • If A, B, and C are collinear, and B is between A and C. The ratio of AB to AC is 4:5. If A is at (-3, 7) and B is at (1, -5), wh
    7·1 answer
  • What is true about the complex number -5 - 5i?
    5·1 answer
  • Sum of 2/3 + (-1/3) i cant find the answer
    9·2 answers
  • Write down and simplify the product of these three factors: 2x, 3x and -4z
    6·1 answer
  • Can i have some help?? Please???????????????
    8·1 answer
  • PLEASE HELPPP!!! If possible how would you prove the given triangles congruent??
    13·1 answer
  • Picture below/above..............<br> thanks
    9·2 answers
  • How I can answer this question, NO LINKS, if you answer correctly I will give u brainliest!
    5·2 answers
  • Help please
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!