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3 years ago

What is (81x^2 -4y^2) square units factored?

1 answer:

4 0

To solve, use the difference of squares rule. (a^2-b^2)=(a-b)(a+b). In your equation, your a^2=81x^2 and your b^2=4y^2, making your a=9x and your b=2y. This makes your factored form (9x-2y)(9x+2y).

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I need help with this

Stells [14]

Answer:

AB = 21

Step-by-step explanation:

So we have two triangles (AEB and ADC), and they're similar by AA

Now, you can find the ratio of similitude by checking AE/AD which is 14/26 = 7/13

AB/AC = 7/13

Take AB as x aight

x/x+18 = 7/13

x=21

5 0

3 years ago

Choose 3 points as inputs to plug into the equation and show your work to find the output. y=x^2 -1

chubhunter [2.5K]

Answer:

(0,-1), (1,0), (2,3)

Step-by-step explanation:

The input values are your x values.

The output values are your y values.

So, we are going to plug in x to get y.

1. Let's plug in 0 for x.

$y=0^{2} -1$

$y=0-1$

$y=-1$

Our first point is located at (0,-1)

2. Let's plug in 1 for x.

$y=1^{2} -1$

$y=1-1$

$y=0$

Our second point is located at (1,0)

3. Let's plug in 2 for x.

$y=2^{2} -1$

$y=4-1$

$y=3$

Our third point is located at (2,3)

All done! Hope you got a better example from my explanation!

5 0

3 years ago

What is the difference between 2.6 m and 108 cm?

sashaice [31]

Answer:

A centimeter is 1/100th of a meter. It would take the length of 100 cm to equal the length of a single meter. A centimeter is equivalent to 0.39 inches. ... A meter is equal to 3.28 feet, 1.09 yards or 0.00062 miles.

Step-by-step explanation:

4 0

3 years ago

Cylinder E has the following dimensions: h = 30 cm and r = 4 cm. Cylinder F has the same radius, but has a height of 5 cm . What

Anarel [89]

Answer:

1759.52cm^3

Step-by-step explanation:

Given data

Cylinder E

h = 30 cm and

r = 4 cm

The expression for the volume is

V= πr^2h

V= 3.142*4^2*30

V= 3.142*16*30

V=1508.16 cm^3

Cylinder F

h=5 cm

r = 4 cm

The expression for the volume is

V= πr^2h

V= 3.142*4^2*5

V= 3.142*16*5

V=251.36 cm^3

Hence the total volume is

=251.36+1508.16

= 1759.52cm^3

6 0

3 years ago

BRAINLIEST for CORRECT answer please help

PilotLPTM [1.2K]

Answer: The answer is B I swear

Step-by-step explanation:

4 0

3 years ago

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