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Elena L [17]
3 years ago
8

Does (8, 1) make the inequality y<x+9 true?​

Mathematics
1 answer:
zavuch27 [327]3 years ago
7 0

Answer:

Yes

Y being 1 is less than x being 8 + 9

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Verify the identity: <br><br> cos 4x + cos 2x = 2 - 2 sin2 2x - 2 sin2 x
Stolb23 [73]
\\ sin^2 \alpha +cos^2 \alpha =1 \\ cos2 \alpha =1-2sin^2 \alpha \\cos( \alpha + \beta )=cos \alpha cos \beta -sin  \alpha sin \beta  \\  \\ cos4x=cos(2x+2x)=cos2xcos2x-sin2xsin2x  = \\ =cos^22x-sin^22x \\ cos^22x=1-sin^22x \\ cos^22x-sin^22x=1-sin^22x-sin^22x=1-2sin^22x \\  cos4x=1-2sin^22x \\ cos2x =1-2sin^2x \\  \\ cos4x+cos2x=1-2sin^22x+1-2sin^2x= \\ =2-2sin^22x-2sin^2x \\  \\ cos4x+cos2x=2-2sin^22x-2sin^2x
3 0
3 years ago
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Which ordered pairs are solutions to this function? f(x)=-5x-8
inessss [21]
Hello,

Your answer would be:

A. (2,-18)

Plz mark me brainliest
4 0
4 years ago
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Please help and explain the answer as best as you can so i can understand it better! (6th grader)​
qwelly [4]

Answer:

The rug will fit. The rug is smaller than the parallelogram.

Step-by-step explanation:

This question is testing to see if you can figure out how the rug may fit in the room.

The rug does fit. Here's how we know.

The only given information from the question is...

  1. Length and Width of the <em>Rectangular Rug</em>
  2. Area of the Parallelogram

Notice that you can use the Length and the Width to get the area of the Rectangular Rug. We need to find the area of the rectangle so we can compare it to the parallelogram.

The area of the Parallelogram is listed at : 108 sqft

The area of the rectangular rug is : 60 sqft

  • <em>Area of rectangle = Length * Width</em>
  • <em>6 * 10 = 60</em>

<em />

The question now asks us if the rug will fit in her room. Well, 60 sqft is less than 108 sqft. So, yes, it will fit.

3 0
3 years ago
Plz help!!!! Geometry
never [62]

The little lines inside the two angles mean they are the same.

The 3 inside angles of a triangle equal 180 degrees.

One angle is 146 , so the other two need to equal 180-146 = 34 total.

34/ 2 = 17

Both angle 1 and angle 2 are 17 degrees each.

8 0
3 years ago
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Solve the following inequality: x+5≤(−x+2)+x
vesna_86 [32]

Answer:

<h2>x ≤ - 3</h2>

Step-by-step explanation:

x + 5 ≤ ( - x + 2) + x

<u>Remove the parenthesis</u>

That's

x + 5 ≤ - x + 2 + x

x + 5 ≤ 2

Using the subtraction property subtract 5 from both sides

That's

x + 5 - 5 ≤ 2 - 5

x ≤ 2 - 5

We have the final answer as

<h3>x ≤ - 3</h3>

Hope this helps you

4 0
3 years ago
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