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Crank
3 years ago
5

Which of the following is the product of (3x − 5) and (3x + 5)?

Mathematics
1 answer:
Whitepunk [10]3 years ago
4 0

Answer:

Step-by-step explanation:

These binomials make up the difference of squares.

3x * 3x = 9x^2

3x * 5 = 15x

-5 * 3x = - 15x

-5 * 5 = - 25

Notice the 2nd and 3rd terms. They are equal except that one is plus and the other minus. That means they cancel. You are left with

9x^2 - 25

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A cube with edges that measure 10 centimeters has a volume that is twice as much as a cube with sides that measure 5 centimeters
rodikova [14]

Answer:

False

Step-by-step explanation:

We find the volumes of the two cubes and compare them.

volume of cube = side^3

The volume of the 10-cm cube is:

V = (10 cm)^3 = 1000 cm^3

The volume of the 5-cm cube is:

V = (5 cm)^3 = 125 cm^3

1000/125 = 8

The volume of the 10-cm cube is 8 times the volume of the 5-cm cube.

The statement is false.

7 0
3 years ago
Under his cell phone plan, Ian pays a flat cost of $59.50 per month and $5 per gigabyte. He wants to keep his bill under $80 per
inessss [21]
You would start by saying his budget is $80 so you start with 80= he pays an initial fee of $59.50 every month plus $5 per gigabyte so you would set it up like
80=59.50+5x
X being how many gigabytes he uses then you solve 80-59.50 is 20.5 divided by 5 gives you 4.1 but you round down cause you don’t want to pass the limit so therefor the most gigabytes he can use is 4
3 0
3 years ago
What is the approximate area of a regular pentagon with a side length of 6 feet and a distance from the center to a vertex of 6
Sergio [31]
The answer is 7,776.
6 0
3 years ago
Read 2 more answers
Please hlep me solve<br><br> -3 x ( w + 5) + 4w
marin [14]

Answer:

w-15

Step-by-step explanation:

-3 * ( w + 5) + 4w

Distribute the -3 to each term in the parentheses

-3w -15 + 4w

Combine like terms

-3w+4w   -15

w-15

3 0
2 years ago
NEED HELP FAST PLEASE PROVIDE WORK SO I KNOW YOU KNOW WHAT YOUR DOING
pashok25 [27]
Okay well, if you make a graph, Point A (7,0) and Point B (4,6) are in the top right quadrant. and Point C (1,1) and Point D (5,3) are in the top left, top right, and bottom left quadrant (I'll link a photo of the graph.)
so the lines intersect and make it perpendicular



5 0
3 years ago
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