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3 years ago

(8+2)² HELP ME I NEED IT

Mathematics

2 answers:

Pavlova-9 [17]3 years ago

7 0

It equals 100

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Thanks and have a merry Christmas!

scoundrel [369]3 years ago

6 0

Answer:

100 answer

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Probe that:<br><img src="https://tex.z-dn.net/?f=%20%5Csec%20%5Calpha%20%20%5Csqrt%7B1%20-%20%20%5Csin%28%20%7B%7D%5E%7B2%7D%20%

Nataly [62]

Step-by-step explanation:

<h3> $\sec \alpha \sqrt{1 - \sin ^{2} \alpha } = 1$ </h3>

Prove the LHS

Using trigonometric identities

That's

<h3> $\cos ^{2} \alpha = 1 - \sin^{2} \alpha$ </h3>

<u>Rewrite the expression</u>

We have

<h3> $\sec \alpha \sqrt{ \cos^{2} \alpha }$ </h3>

<h3> $\sqrt{ { \cos }^{2} \alpha } = \cos \alpha$ </h3>

So we have

<h3> $\sec \alpha \times \cos \alpha$ </h3>

Using trigonometric identities

<h3> $\sec \alpha = \frac{1}{ \cos \alpha }$ </h3>

<u>Rewrite the expression</u>

That's

<h3> $\frac{1}{\cos \alpha } \times \cos \alpha$ </h3>

Reduce the expression with cos a

We have the final answer as

As proven

Hope this helps you

7 0

2 years ago

How do the areas of the murals change when the width changes

kati45 [8]

I do not completely understand your question, but if you mean area by "murals", then when the width increases, area does, too. For example:
I have a rectangular board that is 5 feet by 3 feet. The area is 15 square feet. I have another board with a longer width, but the same length. It is 5 feet by 4 feet. Its area is 20 square feet.

3 0

3 years ago

What is the equation of the line in slope intercept form? if its in points (-2 , 8) (1 , 2) A. -2x-y=-4 B. y=2x-4 C. 2x+y=4 D. y

LekaFEV [45]

The answer is y=-2x+4. The y-intercept is (0,4) and the slope is -2.

6 0

3 years ago

a bird of species a when diving can travel five times as fast as a bird of species b top speed if the total speeds for these two

jeka57 [31]

216 = x + y
y = 5x
216 = 6x
36 = x
y = 5(36)
y = 180
Species A can travel at a top speed of 180
Species B can travel at a top speed of 36

4 0

2 years ago