Explanation: The sum of the measure of the internal angles of any triangle is 180o . In a right angled triangle, one angle will be 90o . Since we know the measure of one of the other acute (less than 90o ) angles, we subtract the sum of the two known angles from 180 to calculate the measure of the other acute angle.

8 0

3 years ago

(x2 + 4)(x2 - 4) please help

VikaD [51]

( $x^{2}$ + 4)( $x^{2}$ - 4)

To solve this question you must FOIL (First, Outside, Inside, Last) like so

First:

(x^2 + 4)(x^2 - 4)

x^2 * x^2

x^4

Outside:

(x^2 + 4)(x^2 - 4)

x^2 * -4

-4x^2

Inside:

(x^2 + 4)(x^2 - 4)

4 * x^2

4x^2

Last:

(x^2 + 4)(x^2 - 4)

4 * -4

-16

Now combine all the products of the FOIL together like so...

x^4 - 4x^2 +4x^2 - 16

Combine like terms:

x^4 - 4x^2 +4x^2 - 16

- 4x^2 +4x^2 = 0

x^4 - 16 <<<This is your answer

Hope this helped!

~Just a girl in love with Shawn Mendes

4 0

3 years ago

Please help Asap will mark (Brainliest)

nadezda [96]

Answer: The area of the notebook that the sticker covers is 128 cm^2

Step-by-step explanation:

The equation for the area of a rectangle should be:

$A=bh$

-The height of the stickers measures 16 cm:

$height = 16cm$

-So, if the base is half as long as the height, you divide it by 2:

$base=\frac{16}{2}=8cm$

-Then, you substitute it:

$A=16$ · $8$

-Result:

$128cm^2$

5 0

2 years ago

Assume running consumes 100 calories per mile. If you run 10-minute miles, what is your average power output, in watts, during a

Aleks04 [339]

We are given with the rate of calories burnt out through running of 100 calories per mile. If 10 miles is ran, we get the total calories burnt is 100 calories per mile * 10 miles equal to 1000 calories. Power (watts) is equal to Joules per second. 1000 calories is equal to 4185.8 Joiules. In an hour run- the power is 69.76 Watts

4 0

3 years ago