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Sladkaya [172]
4 years ago
8

Hello someone help please what is the product of (cosA+2)(cosA-3)​

Mathematics
1 answer:
svetoff [14.1K]4 years ago
7 0

Answer:

cos²A - cosA - 6

Step-by-step explanation:

Given

(cosA + 2)(cosA - 3)

Each term in the second factor is multiplied by each term in the first factor, that is

cosA(cosA - 3) + 2(cosA - 3) ← distribute both parenthesis

= cos²A - 3cosA + 2cosA - 6 ← collect like terms

= cos²A - cosA - 6

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The width of a rectangle is 6 m shorter than its length. If the perimeter of the rectangle is 52 m, find its length and width.
sineoko [7]

Answer:

Length = 16 m , width = 10 m

Step-by-step explanation:

Let the Length of the rectangle be L meters.

Now, Width of the rectangle is (L-6) m.

Perimeter of the Rectangle = 52 m

Now, we know that

Perimeter of the Rectangle =  2(L+W)

⇒ 2(L+W) =  52 m

or, 2(L + (L-6)) = 52 m

Simplifying, we get 2L + 2L -12 = 52

or, 4L = 64

or, L = 16 m

So, width = L- 6 = (16-6) m = 10 m

So, length = 16 m

and width = 10 m

7 0
3 years ago
I need help on photo above please!!!
Leya [2.2K]
Option two is the correct answer
Hope this helps :)
4 0
3 years ago
Marcy’s company produces grandfather clocks. Each clock costs them $164 to make, and they can sell a clock for $625. If their an
padilas [110]

Answer:

c.208

Step-by-step explanation:

In order to solve this you just have to calculate how much money can they make by selling one clock, so as you can see they sell the clock at $625, and the cost of producing that clock is $164, the profut for each clock is the selling price minus the cost of producing it:

625-164= 461

So now you just have to divide the annual overhead by the profit to see how many clock you need to sell to break even:

96,000/461= 208.24

So Marcy´s company need to sell 208 clocks in order to break even with profits and annual overheads.

3 0
4 years ago
Read 2 more answers
Select the correct answer.
svp [43]

Step-by-step explanation:

option B is correct as,

10 + x = -18

→ x = -18 -10

→ x = -28

<em><u>hope </u></em><em><u>this </u></em><em><u>answer </u></em><em><u>helps </u></em><em><u>you </u></em><em><u>dear.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>take </u></em><em><u>care</u></em><em><u>!</u></em>

3 0
3 years ago
Read 2 more answers
You need to add, (9+2X)+(2+3c)
ElenaW [278]

Answer:

3c + 2x + 11

Step-by-step explanation:

3 0
4 years ago
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