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tatuchka [14]
3 years ago
7

Change: f(x) = (x+2) (x-2) to standard form

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
3 0

Answer:

X^2 -4

Step-by-step explanation:

Not entirely sure but would u just expand the brackets. As this is a difference between 2 squares the answer should be correct but it not sure.

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The cone has a diameter of 6 inches and a base diameter of 4 inches. What is the volume of the cone in cubic inches? A) 8pi B) 1
yuradex [85]

Answer:

Step-by-step explanation:

The formula for the volume of a cone is

V = (1/3)r²h, where r is the radius and h is the height.

Unfortunately, you seem to have given the diameter twice.  

Which is the diameter of the base, 6 inches or 4 inches?  What is the height of the cone, in inches?

7 0
3 years ago
Help me to answer this pls​
Butoxors [25]

Problem 1

Draw a straight line and plot X anywhere on it.

Use your compass to trace out a circle with radius 1.5 cm. The circle intersects the line at two points. Let's make Y one of those points.

Also from point X, draw a circle of radius 2.5

This second circle will intersect another circle of radius 3.5 and this third circle is centered at point Z.

Check out the diagram below to see what I mean.

=====================================================

Problem 2

Draw a straight line and plot L anywhere on it.

Adjust your compass to 4 cm in width. Draw a circle around point L.

This circle crosses the line at two spots. Focus on one of those spots and call it M.

Draw another circle centered at point M. Keep the radius at 4 cm.

The two circles intersect at two points. Focus on one of the points and call it N.

The last step is to connect L, M and N to form the equilateral triangle.

See the image below.

=====================================================

Problem 3

I'm not sure how to do this using a compass and straightedge. I used GeoGebra to make the figure below instead. It's a free graphing and geometry program which is very useful. I used the same app to make the drawings for problem 1 and problem 2 earlier.

6 0
2 years ago
Using Algebra tiles, show a model of 3x.​
jenyasd209 [6]

its the first option.

tiles of X and tiles of 1 are different

3 tiles of "X" = 3X

3 tiles of " 1 " = 3

option 3 does not mean 3X, it just means 3X + 3

3 0
3 years ago
I need help with this(explain). what is the value of the expression 2x^2 + 3xy - 4y^2 when x=2 and y= -4 ​
Strike441 [17]

Answer: The answer is -80

Step-by-step explanation:

2(2^2)+(3)(2)(−4)−4(−4)^2

2(2^2)+(3)(2)(−4)−4(−4)^2

=−80

4 0
3 years ago
What is the product of 379 and 8
Tanya [424]
The product of 379 and 8 is 3032, that other answer was wrong they answered with the sum (addition) not the product (multiplication)
7 0
3 years ago
Read 2 more answers
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