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
butalik [34]
3 years ago
14

Help me plss, number 2.​

Mathematics
1 answer:
Gnesinka [82]3 years ago
3 0

Answer:

At (-2,0) gradient is -4 ; At (2,0) gradient is 4

Step-by-step explanation:

For this problem, we simply need to take the derivative of the function and evaluate when y = 0 (when crossing the x-axis).

y = x^2 - 4

y' = 2x

The function y = x^2 - 4 cross the x-axis when:

y = x^2 - 4

0 = x^2 - 4

4 = x^2

2 +/- = x

Hence, this curve crosses the x-axis twice, once at (-2,0) and again at (2,0).

The gradient at these points are as follows:

y' = 2(-2) = -4

y' = 2(2) = 4

Cheers.

You might be interested in
Plz help asap with explanation and will get the brilliant
Elina [12.6K]
3x + y = -3
-2x + y = 7
Use elimination method
Subtract both equations
5x = -10, x = -2
Plug in -2 for x (any equation)
3(-2) + y = -3
-6 + y = -3
y = 3

Solution: x = -2, y = 3
Or as a coordinate: (-2, 3)
8 0
2 years ago
Read 2 more answers
Circumference of a 4" circle?
lesya692 [45]

Answer:

4π ≈ 12.5663706144

Step-by-step explanation:

The circumference of a circle is 2πr, or 2*pi*radius

Suppose the circle has a diameter of 4 inches. A diameter is 2x the radius, of which we are looking for, therefore:

4÷2=<u>2 inches</u> (radius length)

Now that we have the radius, let us <u>substitute</u> to find the circumference:

2πr=

2π2=

4π≈

<u>12.5663706144</u>

<u></u>

<em>I hope this helped! Let me know if you have any further questions :)</em>

7 0
2 years ago
Read 2 more answers
2 5/8 times 1 1/7 equals
Alex17521 [72]
168/56 or 3. 21/8 times 8/7 equals 168 over 56. Also can be 3
6 0
3 years ago
Read 2 more answers
Find the measures of HAB and CAB.
Paha777 [63]

Answer: Angle HAB= 66 and Angle CAB= 44

Step-by-step explanation:

Since angle EAF=90 and FAD=20 then DAH must equal 70 degrees because it is 180 degree angle. Since DAH and EAC are vertical angles they are equal so EAC = DAH= 70 degrees. For the other side of 180 degrees then 70+5x=180

5x=110

x=22

CAB= 2(22)= 44 degrees

HAB= 3(22)=66 degrees

4 0
3 years ago
BASED ON THE GRAPH, WHICH STATEMENT IS CORRECT?
abruzzese [7]

Answer:

i would go for a but im not really sure. sorry if incorrect

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • 50 POINTS what is the average rate of change of the function f(x)=3x^2 on the interval from 0 to 2?
    13·1 answer
  • F(-4) for f (x) = -4x+9<br>f(-4)=?
    7·1 answer
  • The pilot of a hot air balloon drops an object over board at a height of 3000 feet name the expression 16t2 represents the dista
    14·1 answer
  • Find the x- and y-intercept of, y = 1/2x - 7
    7·1 answer
  • Rico is making 4 batches of salsa.EAxh batch needs 2/3 cup of corn.He only had a 1/3 cup measure.How many times must rico measur
    6·1 answer
  • Ayuda porfavor urgenteee<br> 15 puntos!!!
    13·1 answer
  • Select the correct answer.
    6·2 answers
  • What is the Median?<br><br>2,5,1,1,8​
    15·2 answers
  • What ordered pairs are the solutions of the system of equations shown in the graph below?
    10·1 answer
  • Can someone please help
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!