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Svetllana [295]
3 years ago
15

Cos^4A - sin^4A = COS2A​

Mathematics
1 answer:
Elenna [48]3 years ago
8 0

Step-by-step explanation:

hope u understand it's just a simple formula

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3.
RideAnS [48]

Answer:

4.5 ft

Step-by-step explanation:

Given that the two fugures in the question above are similar, it means they have the same shape, even though they are if different sizes, the ratio of their corresponding sides are proportional. Thus,

18/x = 8/2

Let's solve for x as required.

We have,

18/x = 8/2

=>Cross multiply:

18 × 2 = 8 × x

36 = 8x

=>Divide both sides by 8

36/8 = x

4.5 = x

x = 4.5 ft

The first option is our answer = 4.5 ft

5 0
3 years ago
Find the width of the rectangular prism when the surface area is 208 square centimeters.
ozzi
SA=2(lw+wh+lh) This is the formula for finding the surface area of a rectangular prism, where SA is surface area, l is length, w is width, and h is height.

208=2(lw+wh+lh)
104=lw+wh+lh Here, I divided both sides by 2 to get ride of the 2.

Now, I used prime factorization to find out all the prime factors of 104, which are 2, 2, 2, and 13. Since rectangular prisms only have 3 dimensions, I needed to combine two of the prime factors. In this case, I can either combine 2 of the 2s to get 2, 4, and 13 or I can combine 13 with one of the 2s to get 26, 2, and 2.

If my dimensions were 2, 4, and 13...
my surface area would be 172 sq cm.

If my dimensions were 2, 2, and 26...
my surface area would be 208 sq cm.

Hence, the width of the rectangular prism when the surface area is 208 square centimeters can be either 2 or 26.
7 0
4 years ago
What is the product of (y+3)(y^2- 3y+9)
makvit [3.9K]

Answer:

y^3+27

Step-by-step explanation:

(y+3)(y^2-3y+9)\\

*use box method

3 0
3 years ago
PLZ HELP IWILL GIVE BRAINLIESTTT
liq [111]

Answer:

Choice B

A = b x h

Step-by-step explanation:

In other words the area of a parallelogram is the base times height

8 0
3 years ago
Consider the polynomial function
dolphi86 [110]

Answer:Since the degree is odd, the ends of the function will point in the opposite directions. Odd. Identify the leading coefficient.

Step-by-step explanation:

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░░░░░░█░░░░░░░░█░ bob da bildr

8 0
3 years ago
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