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MariettaO [177]
3 years ago
13

Can someone please answer. There is one question. There's a picture. Thank you!

Mathematics
1 answer:
stepan [7]3 years ago
5 0
By Cosine Rule:

CosT = (s² + r² - t²) /(2sr)

<span>CosT = (10² + 11² - 7²) /(2*11*10)
</span>
<span>CosT = 172 /220 </span>≈ 0.7818

T = Cos⁻¹(0.7818)

T ≈ 38.57°

T ≈ 38.6°
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Will mark branliest!<br> show work.
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Answer:

3/-2........-1.5 as decimal

Step-by-step explanation:

slope formula=y2-y1/x2-x1

6+3/-1-5

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3/-2..........or-1.5 as deciamal

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7. Three vertices of a parallelogram are (0, 0), (−4,0) and (0, 5). Find all 3 possible coordinates for
kenny6666 [7]

The given vertices combine with the fourth vertex as follows;

a) Coordinates; (-4, 5)

Lengths of the sides; 4 and 5

b) Coordinates; (4, 5)

Lengths of the sides; 4 and √41

c) Coordinates; (-4, -5)

Lengths of the sides; 5 and √41

<h3>How can the vertex coordinates be found?</h3>

The given vertices are;

(0, 0): The origin

(-4, 0): 4 units to the left of the origin along the abscissa

(0, 5): 5 units above the origin, along the ordinate

a) The point that forms a rectangle is above the point (-4, 0) and to the left of the point (0, 5), which gives;

The coordinates of the point that forms a rectangle is the point (-4, 5)

The lengths of the sides are;

0 - (-4) = 4

5 - 0 = 5

b) The first parallelogram is formed by moving an equal distance of the point (-4, 0) from the origin from the point (0, 5), which gives;

  • The first parallelogram is formed by the point (4, 5)

The lengths of the sides are;

  • 4 - 0 = 4
  • √((5 - 0)^2 + (4 - 0)^2) = √41

c) The second parallelogram is formed by the moving an equal distance of the point (0, 5) from the origin from the point (-4, 0), which gives;

  • The second parallelogram is formed by the point (-4, -5)

The lengths of the sides are;

  • (5 - (-5)) = 5 and √41

Learn more about parallelograms here:

brainly.com/question/21474928

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Answer:

x=26

Step-by-step explanation:

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Eva8 [605]

The answer is B. Multiply

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Five swimmers entered a competition. Four of the swimmers have had their turns. Their scores are 10.8s, 10.75s, 10.79s and 10.81
Shalnov [3]

Answer:

10.74s or faster (lower)

Step-by-step explanation:

The lowest time out of all of them is 10.75, so to all the 5th swimmer needs to do to win is to undercut the swimmer who got 10.75s by a 100th of a second. i.e 10.74s or faster (lower) would win.

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