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4 years ago

Please help me someone !!

Mathematics

1 answer:

adelina 88 [10]4 years ago

4 0

Answer:

$6^{\frac{-1}{3}}$

Step-by-step explanation:

put them both in exponential form and then since they are both base 6, you can add the exponents.

$6^{\frac{1}{6}} *6^{\frac{-3}{6} }$

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Step-by-step explanation:

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2 years ago

An array of 2 rows of 7 dots has a total of 14 dots. it is called a 2 by __ array

max2010maxim [7]

It is called a 2 by 7 array.

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3 years ago

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5cosx -2sin(x/2) +7=0<br>Help me to find x step by step<br>pls

miskamm [114]

Answer:

x = 180

Step-by-step explanation:

First, you need to know

1. Double-angle formula:

cos(2x) = $cos^{2}x - sin^{2}x$

2. Pythagorean identity:

$cos^{2}x + sin^{2}x = 1$

Back to your problem, replacing the variable by the above:

$5cosx-sin\frac{x}{2}+7 = 0$

$5(cos^{2}\frac{x}{2}-sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Double-angle formula

$5(1 - 2sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Pythagorean identity

Given $y = \frac{x}{2}$

$5(1-2sin^{2}y) - 2siny + 7 = 0$

$10sin^{2}y+2siny-12=0$

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$(5siny + 6)(siny - 1)=0$ , we know -1 < sinx < 1, for every x ∈ R

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3 years ago

What assumption should be made to prove this conjecture by contradiction? If it is raining, then I will not go swimming.

Anon25 [30]

Here are some options to make deciding easier-

A) you went swimming
B) it is raining
C)you are not swimming
D) it is not raining

I think that the answer would be A because the opposite of it not raining would be it raining and the effect of that is that you will go swimming.

Hope this helps... plz mark Brainliest :)

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3 years ago

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Bad White [126]

10^7 is the correct answer

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3 years ago

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