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Natalka [10]
2 years ago
5

Help with math and explain plsss

Mathematics
1 answer:
LenKa [72]2 years ago
4 0

Step-by-step explanation:

cotθcosθ=1tanθ⋅1cosθ

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Rewrite (2x+1)(x-2) using the distributive property then simplify
Contact [7]
(2x+1)(x-2) = 2x^2 - 4x +x -2= 2x^2-3x-2
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3 years ago
Solve the equation. Then check your solution. 1.6a=-9.12
balu736 [363]
B.) a=-5.7
1.6(a)=-9.12
(a)=(-9.12)/(1.6)
a=-5.7
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What is the slope of the linear model x 1 2 3 4 5 6 7 y 12 12 9 10 6 8 6
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Sorry that is not a linear model. There is not a constant rate of change. Are you sure you copied it correctly
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Estimate the sum for 1,537 times 242 then find the sum
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2 years ago
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Rebecca has 12 photos she wants to hang side by side on her wall.A. If she only wants to display 8 of the photos, in how many wa
Mariana [72]

A.

If she will choose 8 from 12 photos, the total number of ways she can choose is given by a combination of 12 choose 8, since the order of the photos doesn't matter.

The formula for a combination of n choose p is:

C(n,p)=\frac{n!}{p!(n-p)!}

For n = 12 and p = 8, we have:

C(12,8)=\frac{12!}{8!(12-8)!_{}}=\frac{12\cdot11\cdot10\cdot9\cdot8!}{8!\cdot4!}=\frac{12\cdot11\cdot10\cdot9}{4\cdot3\cdot2}=495

So there are 495 ways.

B.

If she wants to arrange the 12 photos, the total number of ways is given by the factorial of 12:

12!=12\cdot11\cdot10\cdot9\cdot8\cdot7\cdot6\cdot5\cdot4\cdot3\cdot2=479001600

There are 479,001,600 ways.

C.

Since 10 photos already have specific places, we need to calculate the number of ways to arrange the other two photos in the two remaining places.

In this case, there are only 2 ways of organizing the remaining two photos:

Photo 1 first, photo 2 last, or photo 1 last and photo 2 first.

6 0
1 year ago
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