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zavuch27 [327]
3 years ago
10

Sin2A-sin2B+sin2C=4cosA×sinB×cosC​

Mathematics
1 answer:
Hoochie [10]3 years ago
3 0

Answer:

Step-by-step explanation:

mark as brainliest!!! this is not a video i sent a screenshot instead

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Find the value of x when : 2^30/8^9=2^x
artcher [175]

Answer:

x = -3

Step-by-step explanation:

Okay, the first thing to do is get that 8 away from the fraction. How can we do it? When you have 2³ you have 8, is the same thing, so let's do it:

2³⁰/(2³)⁹ = 2^x

When you have a number with the shape (a^x)^y, you can write it as a^(x•y), so:

(2³)⁹ = 2^3•9 = 2²⁷

Now we have:

2³⁰/2²⁷ = 2^x

When you have a division like this: (a^x)/(a^y), you can write it as a^(x-y), so:

2^(30-27) = 2^x

2^-3 = 2^x

Now you know that x = -3

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3 years ago
What are the factors of58
liubo4ka [24]
<span>1,2, 29,and 58 are the factors of 58.</span>
8 0
3 years ago
Cual expresion es equivalente a 5n+8 when n is equal 2
FromTheMoon [43]
If n is 2, you substitute 2 for n and multiply 5(2)+8= 10 +8 = 18
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3 years ago
Is 8.25 greater than 8.250
Elanso [62]
8.25 is equal to 8.250                                                                          
8 0
3 years ago
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A birthday cake was cut into equal pieces, and four pieces were eaten. The fraction is 3/7 how many are left
GaryK [48]
3 are left.
3/7 means there were 7 slices, but it's missing 4 slices. (Eaten)

i hope this helps :)

7 0
3 years ago
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