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kkurt [141]
3 years ago
9

An archaeologist used string to make a grid over an area

Mathematics
1 answer:
Korolek [52]3 years ago
4 0

Answer:

option a c d are correct

Step-by-step explanation:

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An airplane, flying at an altitude of 6 miles, is on a flight path that goes directly over you. If θ is the angle of elevation,
wariber [46]

Answer:

Distance between the person and the plane is 12 miles

Step-by-step explanation:

From the figure attached,

An airplane is flying at an altitude AB = 6 miles.

An observer is standing at point C from where he observes the plane at an angle of elevation θ

Therefore, sinθ = \frac{\text{\text{Opposite side}}}{\text{Hypotenuse}}

sinθ = \frac{AB}{AC}

AC = \frac{AB}{sin\theta }

AC = 6cosecθ

If angle θ = 30°

Then AC = 6cosec30

AC = 6×2

AC = 12 miles

Therefore, distance between the person and the plane is 12 miles.

5 0
4 years ago
Joelle made 3 bracelets in 15 minutes, 4 bracelets in 20 minuets, and 6 bracelets in 30 minutes. Is the relationship between the
melamori03 [73]
Yes. It takes 5 minutes per bracelet.
8 0
4 years ago
Read 2 more answers
If the interior angle of a polygon is 170 how many sides does it have
Tpy6a [65]

if interior angle is 170, subtract 170 from 180 to find exterior angle:

180-170 = 10 = exterior angle

the sum of exterior angles is 360 so divide by exterior angle to find sides:

360 /10 = 36 sides

6 0
3 years ago
HELP PLEASE giving out brainilest
Nat2105 [25]

9514 1404 393

Answer:

  160 cm³

Step-by-step explanation:

The ratio of the linear dimensions is the square root of the ratio of areas:

  scale factor B/A= √(64/144) = 8/12 = 2/3

The ratio of volumes is the cube of the scale factor:

  (volume B)/(volume A) = (2/3)³ = 8/27

Then the volume of pyramid B is ...

  volume B = (volume A) × (volume B)/(volume A)

  = (540 cm³) × (8/27) = 160 cm³ . . . . volume of pyramid B

_____

Equivalently, the ratio of volumes is the 3/2 power of the ratio of areas.

 Vb = Va(64/144)^(3/2) = (540 cm³)(4/9)^(3/2) = (540)(8/27) cm³ = 160 cm³

5 0
3 years ago
5(3 + 4) − 2 = 7 − 3(−2 + 11
natka813 [3]

Answer: what I understood from the question that you want this side and the other side so the fust side equals 33 and the second side after the equal side equals -20 so 33 = -20

Step-by-step explanation: I hope it is correct .

3 0
2 years ago
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