3 years ago

Can someone help me solve these problems?

Mathematics

1 answer:

kicyunya [14]3 years ago

3 0

The answer is in the image and this question is from exponents

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Misha Larkins [42]

i believe your answer will be 0.04 or 4/100

OR if you need an equivalent expression, that would be 81/2187

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I believe the answer is C. 2.43

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suppose that A and B are points on the number line. if AB=14 and A lies at 9, where could B be located?

balandron [24]

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5x5x5x5x6x7x8x8x9x9x9x9x9x9x10x12x13x14x15x16x17x18x19x20<br><br> WHAT DOES THIS EQUAL

trapecia [35]

Answer:

5.441683e+23

Step-by-step explanation:

Hope it helped brainiest plz

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3 years ago

Read 2 more answers

Prove that sin20sin40sin60sin80=3/16

never [62]

We'll use the following properties of sine and cosine to prove this:

$sin(a)\cdot sin(b) = \frac12(cos(a-b) - cos(a+b))$

$cos(a)\cdot cos(b) = \frac12(cos(a+b) + cos(a-b))$

$cos(180+a) = cos(180-a)$

Then it's just a matter of filling it in...

sin20sin40 * sin60sin80 = 1/2(cos20 - cos60) * 1/2 (cos20 - cos140) =

1/8( cos40 + 1 - cos160 - cos120 - cos40 - cos80 + cos80 + cos200) =

1/8(1 - cos160 - cos120 + cos200) =

1/8(1 - cos160 - cos120 + cos160) =

1/8(1 - cos120 ) = 1/8( 1 + 1/2 ) = 3/16

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3 years ago