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3 years ago

6

Find the surface area of this square pyramid

1 answer:

coldgirl [10]3 years ago

8 0

Answer:

the answer should be 96

Step-by-step explanation:

hope this helps :)

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The Sine Function

larisa86 [58]

Answer:

D. May not be accurate, information was taken over 2 year period; More information from previous years would help the prediction be more accurate.

Step-by-step explanation:

I calculated it logically

3 0

3 years ago

Calculate cos(480°) and sin(480°).

hram777 [196]

Answer:

$\cos(480^\circ)=-\dfrac{1}{2}$

$\sin(480^\circ)=\dfrac{\sqrt{3}}{2}$

Step-by-step explanation:

Calculate the value of trigonometry function.

$\cos(480^\circ)$ and $\sin(480^\circ)$

Split the angle between 0 to 90° using trigonometry formula.

$\Rightarrow \cos(360^\circ+120^\circ)$

$\Rightarrow \cos(120^\circ)$ $\because \cos(360+\theta)=\cos\theta$

$\Rightarrow \cos(180^\circ-60^\circ)$ $\because 120=180-60$

$\Rightarrow -\cos(60^\circ)$ $\because \cos(180-\theta)=-\cos\theta$

$\Rightarrow -\dfrac{1}{2}$

Therefore, cos(480°) = -0.5

$\Rightarrow \sin(360^\circ+120^\circ)$

$\Rightarrow \sin(120^\circ)$ $\because \sin(360+\theta)=\sin\theta$

$\Rightarrow \sin(180^\circ-60^\circ)$ $\because 120=180-60$

$\Rightarrow \sin(60^\circ)$ $\because \sin(180-\theta)=\sin\theta$

$\Rightarrow \dfrac{\sqrt{3}}{2}$

Therefore, sin(480°) = 0.866

7 0

3 years ago

The water level is a number that indicates whether the level is above or below normal using positive or negative values.

Georgia [21]

Answer:

-3.85 feet

Step-by-step explanation:

-2.8 feet + 1/2(2.1) = 1.05 as the stream is more than previous then we must subtract to find previous = -2.8 - 1.05 = -3.85 feet

7 0

2 years ago

Jana determined that she is approximately 1.013 10-3 miles tall. How many places, and in

34kurt

To the left three places

5 0

3 years ago

blondinia [14]

C is the correct answer $136.00 is the cost

5 0

3 years ago

Read 2 more answers