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
raketka [301]
3 years ago
7

If f(x)=x²-16 is continuous at x = -4, find f(-4).

Mathematics
2 answers:
mylen [45]3 years ago
8 0

Answer:

f(-4) =0

Step-by-step explanation:

f(x)=x²-16

Let x = -4

f(-4) = (-4)^2 -16

       =  16-16

       = 0

True [87]3 years ago
5 0

Answer:

0

Step-by-step explanation:

f(-4) means x = -4 so then plug -4 into the function.

y = -4²-16

y = 0

You might be interested in
What is the area of the circle if DF=20 in.
crimeas [40]
We know that

DF is the diameter of the circle
so
radius r=DF/2----->20/2-----> r=10 in

area of the circle=pi*r²------> pi*10²-----> 100*pi in²-----> 314 in²

the answer is

100*pi in² or 314 in²
4 0
3 years ago
7. The points P(2, -3), Q(3, -2) and R(8, z) are
Hatshy [7]

Answer:

z = 3

Step-by-step explanation:

Since the points are collinear then the slopes between the points are equal.

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = P (2, - 3) and (x₂, y₂ ) = Q (3, - 2)

m = \frac{-2+3}{3-2} = 1

Repeat with

(x₁, y₁ ) = Q (3, - 2) and (x₂, y₂ ) = R (8, z )

m = \frac{z+2}{8-3} = \frac{z+2}{5} , then

\frac{z+2}{5} = 1 ( multiply both sides by 5 )

z + 2 = 5 ( subtract 2 from both sides )

z = 3

4 0
3 years ago
The perimeter of a square with sides measuring 5 inches is _______ inches
Rzqust [24]
Each side is 1.25inches I don't know if this answers your question but i hope it helps
4 0
3 years ago
A pharmacist has 80 milileters of a 25 percent saline solution. Which expression can be used to find the percentage of the conce
Thepotemich [5.8K]

Answer:


Step-by-step explanation:

Final concentration % = [grams of salt / mililiters of solution] * 100


grams of salt = grams of salt from solution 1 + grams of salt from solution 2


grams of salt from solution 1 = mililiters * %/100 = 80 mililiters * 0.25 g/mililiters = 20 g


grams of salt from solution 2 = mililiters *%/100 = x*0.10 g/mililiters = 0.1x


mililiters of final solution = mililiters from solution 1 + mililiters from solution 2


mililiters of final solution = 80 mililiters + x mililiters


=> Final concentration, %  =  [0,10x + 20 g] / [x + 80 mililiters] * 100


6 0
3 years ago
Need help! Figure shown.
Finger [1]

Answer:C

Step-by-step explanation: In order for it to become the second figure it needs to be enlarged and reflected. It needs to be enlarged first so it will end up placed in the right spot.

7 0
3 years ago
Read 2 more answers
Other questions:
  • I need help on this question
    14·1 answer
  • Convert 2032four to base 10
    6·1 answer
  • IMPORTANT NEED RIGHT NOW!! PLEASE HELP!!! WILL VOTE BRAINLIEST!!!
    7·2 answers
  • Find the indicated z score. The graph depicts the standard normal
    15·2 answers
  • P is between A and E, AE=27.3 and AP=12.8. What is the length of PE?
    6·1 answer
  • Y=-x+5<br> Y=x+1<br> Solve the system
    7·1 answer
  • Find the height of a cylinder with a surface area of 1,206.4 in^2 and a radius of 8 in.
    10·2 answers
  • Part A
    15·1 answer
  • A sales person at a car dealership earns a monthly salary of $2400 and $250 for each vehicle sold
    12·1 answer
  • Wich data set could be repersented by the blox plot shown down below?<br><br><br>pick a b c or d
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!