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4 years ago

Find the expression when a=-3 and b=-1: A^2-b^2=

Mathematics

1 answer:

muminat4 years ago

6 0

Well imma say -3^2–1^2=-8

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Calculate the radius of the circular rug. Use 3.14 for π. <br><br> area of rug: 153.86 feet

irakobra [83]

Answer:

7 ft

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

153.86 = 3.14 r^2

Divide each side by 3.14

153.86 / 3.14 = r^2

49 = r^2

Take the square root of each side

sqrt(49) = sqrt(r^2)

7 = r

5 0

3 years ago

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a photographer shines a camera light at a particular painting forming an angle of 50 degrees with a camera platform at the light

umka2103 [35]

Answer:

The painting is 42.13 feet above the platform

Step-by-step explanation:

Refer the attached figure .

A particular painting forming an angle of 50 degrees with a camera platform .

∠ABC = 50°

We are also given that the light is 55 feet from the wall where the painting hangs

i.e. AB = 55 feet.

Now we are required to find how high above the platform is the painting. i.e. AC

So, we will use trigonometric ratio :

$sin\theta = \frac{Perpendicular}{Hypotenuse}$

$sin50^{circ} = \frac{AC}{AB}$

$sin50^{circ} = \frac{AC}{55}$

$0.766*55 = AC$

$42.13= AC$

Thus the painting is 42.13 feet above the platform

8 0

3 years ago

If f(x)= 2x^2 +5radical(x-2)

elena55 [62]

Answer:

Step-by-step explanation:

4 0

3 years ago

6 times 7 to the second power

Travka [436]

Hello!

To solve this question, we must first add the exponent into the number 7 before multiplying it by the number 6.

7 to the second power simply means 7x7.

7x7= 49

Now that the exponent is in the equation, we can multiply 49 by 6 to find your final answer.

6 x 49 = 294

I hope this helps answer your question! Have a great day!
-MMMski

5 0

3 years ago

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Using the side lengths, 20, 15 , 15 , determine whether the triangle is acute, obtuse, or right

Ymorist [56]

acute, hope this helps

8 0

3 years ago

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