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GalinKa [24]
3 years ago
8

Which statement regarding the function y=cos(x) is true?

Mathematics
2 answers:
Amanda [17]3 years ago
7 0
Cos(x)=cos(-x)-For apex people who are trying to make sure.
MAVERICK [17]3 years ago
6 0
<span>A. cos(x) = cos(-x)  [correct, since cos(x) is an even function]
B. Since the cosine function is even, reflection over the x-axis [y-axis] does not change the graph.  [false]
C. cos(x) = -cos(x)   [ false]
D. The cosine function is odd [even], so it is symmetrical across the origin.   [false]</span>
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What is the product?
Leya [2.2K]

Answer:

5/4k^2

Step-by-step explanation:

P=5\dfrac{k}{6}\times \dfrac{3}{2k^3}.

We will be using the following property of exponents:

\dfrac{a^x}{a^y}=a^{x-y}.

We have

P\\\\\\=5\dfrac{k}{6}\times\dfrac{3}{2k^3}\\\\\\=\dfrac{5}{6}\times\dfrac{3}{2}k^{1-3}\\\\\\=\dfrac{5}{4}k^{-2}=\dfrac{5}{4k^2}.

Thus, the required product is \dfrac{5}{4k^2}.

Read more on Brainly.com - brainly.com/question/8858421#readmore

8 0
3 years ago
Read 2 more answers
I don’t understand constant rates of change help!
REY [17]

Answer:

The (constant) rate of change with respect to the variable x of a linear function y = f(x) is the slope of its graph. If x and f have units in Definition 2, then the units of the rate of change are those of f divided by those of x.

Step-by-step explanation:

5 0
4 years ago
3x^3-2x^2-147x+98=(ax-c)(bx+d)(bx-d) where a,b,c and d positive integers. Work out the value of a,b,c and d
Alexxx [7]

Expand the right side:

(ax-c)(bx+d)(bx-d)=(ax-c)(b^2x^2-d^2)

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Notice that 98 = 2 * 7 * 7, so we have c=2 and d=7.

Then

-ad^2=-147\implies a=\dfrac{147}{49}=3

and

ab^2=3\implies b^2=1\implies b=1

6 0
3 years ago
Which one is longer <br> 120 yd<br> 328 ft 11 in<br> 108 yd 4 ft <br> 378 ft
Nataliya [291]

Answer:

378 ft i think

Step-by-step explanation:

7 0
3 years ago
Matthew has 18 sets of baseball cards. Each set has 12 cards. About how many baseball cards does Matthew have? The key word is a
Marizza181 [45]
18 groups of 12. 18 times 12.  That equals 216. 216 can round to 200, 215, or 220.
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3 years ago
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