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Nezavi [6.7K]
3 years ago
11

Could you please help me out I think that answer is c

Mathematics
1 answer:
Stella [2.4K]3 years ago
6 0

Answer:

y^2=9^2+19^2-2(9)(19)cos(41)

Step-by-step explanation

That is the one that is correct.

In the picture attached, the angle is in the middle of side C, so the ecuation should be,

c^2=a^2+b^2-2(a)(c)cos()

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Find two geometric means between 5 and 135
aniked [119]
Answer:

We are effectively looking for a and b such that 5, a, b, 135 is a geometric sequence.

This sequence has common ratio <span><span>3<span>√<span>1355</span></span></span>=3</span>, hence <span>a=15</span> and <span>b=45</span>

Explanation:

In a geometric sequence, each intermediate term is the geometric mean of the term before it and the term after it.

So we want to find a and b such that 5, a, b, 135 is a geometric sequence.

If the common ratio is r then:

<span><span>a=5r</span><span>b=ar=5<span>r2</span></span><span>135=br=5<span>r3</span></span></span>

Hence <span><span>r3</span>=<span>1355</span>=27</span>, so <span>r=<span>3<span>√27</span></span>=3</span>

Then <span>a=5r=15</span> and <span>b=ar=15⋅3=45</span>


6 0
3 years ago
For #1-8, solve the equation for the indicated variable:<br> Solve for x:<br> 1.<br><br> 3x + 2 = 8
Karo-lina-s [1.5K]

Steps to solve:

3x + 2 = 8

~Subtract 2 to both sides

3x = 6

~Divide 3 to both sides

x = 2

Best of Luck!

5 0
3 years ago
I need help please and thank you​
Andrej [43]

Answer:

a=-7.275*967

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please help me 4and 5
hoa [83]
What grade are you in

5 0
3 years ago
An Artist has 600 inches of framing material to form a rectangular frame. The dimensions of the wall on which it will hang limit
kondor19780726 [428]

Answer:

  • 2(L +W) ≤ 600
  • W ≤ 200
  • L ≥ 2W

Step-by-step explanation:

We assume the problem wording means the length is to be at least 2 times <em>as long as</em> the width. (<em>Longer than</em> usually refers to a difference, not a scale factor.)

If we let "W" and "L" represent the width and length, respectively, then we can translate the problem statement to ...

  2(L + W) ≤ 600 . . . . . . the perimeter is twice the sum of length and width

  W ≤ 200 . . . . . . . . . . . . the width is at most 200 inches

  L ≥ 2W . . . . . . . . . . . . . the length is at least twice the width

6 0
3 years ago
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