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castortr0y [4]
2 years ago
7

Derive this equation In (3-4Cosx)​

Mathematics
1 answer:
pantera1 [17]2 years ago
6 0

Answer:

4sin(x)

Step-by-step explanation:

That is the new equation hope it helps!

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If the equation yx = zx is true, when yx is positive, x /= 0, and z is
denis23 [38]

Answer: negative

Step-by-step explanation:

With yx = zx, then by the Multiplicative Property of Equality, y = z. Since z is a negative integer, then y is also a negative integer. Since yx is positive, with y equal to a negative integer, then x is negative.

5 0
2 years ago
Factor the following equation to find its zeros. y = x² - 36
alukav5142 [94]

Answer:

x = 6, x = - 6

Step-by-step explanation:

Given

y = x² - 36

To find the zeros let y = 0, that is

x² - 36 = 0 ← x² - 36 is a difference of squares and factors in general as

a² - b² = (a - b)(a + b), thus

x² - 36 = 0

x² - 6² = 0

(x - 6)(x + 6) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 6 = 0 ⇒ x = 6

x + 6 = 0 ⇒ x = - 6

3 0
3 years ago
What is the sign of −4ab when a>0 and b<0?
AVprozaik [17]

Answer:

A

Step-by-step explanation:

We have the expression:

-4ab

And we want to find its sign given that a>0 and b<0.

Notice that the expression is already negative since we have -4.

a>0 means that a is positive. Therefore, we can ignore it since it won’t do anything.

b<0 means that b is negative. Therefore, we will have two negatives being multiplied together. Hence, this will make a positive.

Therefore, the sign of our expression will be positive.

We can see this with an example. Let a=1 (1>0) and let b=-1 (-1<0). Then:

-4(1)(-1)=4

So, the sign is positive.

Hence, the answer is A.

7 0
3 years ago
Quadratic equation x² - 5x+6=0
Nadusha1986 [10]

Answer: X=6-1

Step-By-Step Equation:

6 0
2 years ago
Nick bought some sneakers that were 15% off the regular price of $120. If an 8% sales tax was added to the cost of the sneakers,
inn [45]
That would be $110.16
8 0
3 years ago
Read 2 more answers
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