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Paraphin [41]
3 years ago
13

Cos^2x-cos^6x=sin4xsin8x

Mathematics
1 answer:
tino4ka555 [31]3 years ago
6 0
(cos2x+cos6x)(cos2x-cos6x) =

(2 sin 4x cos 4x) (2 sin 2x cos 2x) =

sin 8x sin 4x (Answer)
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What are 2 common mistakes people make when using quotient rule with exponents?
NemiM [27]

Answer:

1. Not accounting for the difference in the base of the exponent when applying the quotient rule.

2. Not subtracting the exponents of the denominator from the exponent of the numerator when applying the quotient rule.

5 0
1 year ago
I need the function for the volume of the box for number 1
rjkz [21]

Answer:

Step-by-step explanation:

The volume of a rectanguiar shape like this one is V = L * W * H, where the letters represent Length, Width and Height.  Here L is the longest dimension and is 28 - 2x; W is the width and is 22-2x; and finally, x is the height.  Thus, the volume of this box must be

V(x) = (28 - 2x)*(22 - 2x)*x

and we want to maximize V(x).  

One way of doing that is to graph V(x) and look for any local maximum of the graph.  We'd want to determine the value of x for which V(x) is a maximum.

Another way, for those who know some calculus, is to use the first and second derivatives to identify the value of  x at which V is at a maximum.

I have provided the function that you requested.  If you'd like for us to go all the way to a solution, please repost your question.

3 0
2 years ago
write an enaquality that expresses the reason the lengths 5 feet , 10 feet and 20 feet could not make a triangle. explain how th
NikAS [45]
For any triangle, the 2 shortest sides added together have to be longer than the longest sides.

short side (10) + short side (5) needs to be greater than (>) longest side (20)

10 + 5 > 20

15 > 20

This inequality is incorrect, so the lengths cannot make a triangle.

Hope this helps :)

7 0
3 years ago
A recipe uses 3/4 cup of water and 2 cups of flour. Write the ratio of water to flour as described by the recipe
Mademuasel [1]

Answer: 3/4 : 8/4

Step-by-step explanation:

flour = 2 = 2/1 = 4/2 = 8/4

make the denominators the same and you are good

5 0
2 years ago
Read 2 more answers
For each hour he babysits, Anderson earns $1 more than half of Carey’s hourly rate. Anderson earns $6 per hour. Which equation c
ozzi
Carey earns c hourly
Anderson earns $6 hourly which is also 1+ c/2
So, 6=1+c/2
      12=2+c
c=$10
Carey earns $10 hourly
3 0
3 years ago
Read 2 more answers
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