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nlexa [21]
3 years ago
8

If an airplane in a 1/4in. Scale drawing is 5in. Long, how long is the actual airplane?

Mathematics
1 answer:
dsp733 years ago
7 0

Answer:

20 in

Step-by-step explanation:

you'd just multiply the length of the airplane by 4

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A guitar string vibrates back and forth 88 times in 1 minute. Round your answers to the following questions to the nearest tenth
Flura [38]

Answer:

1.5

Step-by-step explanation:

divide 88÷60=1.4666667

simplify to nearest 10th

8 0
2 years ago
Bearings Problem Solving Question:
Lynna [10]

9514 1404 393

Answer:

  a) 123.4°

  b) 3.3 km

Step-by-step explanation:

In (N, E) coordinates, Boat 1 is located relative to the lighthouse at ...

  2(cos(60°), sin(60°)) = (1.0, 1.732) . . . . . km

Boat 2 is located at ...

  3(cost(340°), sin(340°)) = (2.819, -1.026) . . . . . km

So, relative to Boat 2, Boat 1 is located at ...

  (1, 1.732) -(2.819, -1.026) = (-1.819, 2.758) . . . . . km

This is at a bearing of ...

  arctan(2.758/-1.819) = 123.4°

and a distance of ...

  √(1.819² +2.758²) ≈ 3.304 . . . . . km

a) Boat 2 would need to travel on a bearing of 123.4°.

b) Boat 2 would need to travel 3.3 km.

_____

<em>Additional comment</em>

We use (North, East) coordinates so we don't have to do the mental gyrations necessary to translate to and from (E, N) coordinates. The latter would correctly orient a map relative to the X-Y Cartesian plane. The former are equivalent to flipping the map over and looking at it from the back side. This is a "rigid transformation", so angles and distances remain unchanged.

7 0
2 years ago
Find 6889 + 3088 + 9062.
Varvara68 [4.7K]

1903

pls mark brainliest

if u want

6 0
2 years ago
Read 2 more answers
2. Evaluate the expression e + c for e = 9 and c = 5.<br> a. 14<br> c. 15<br> b. 45<br> d. 4
slega [8]

Answer: A. 14

Step-by-step explanation:

If e=9 and c=5 you would replace e+c with those

9+5=14

6 0
2 years ago
Have to show all work
Natasha2012 [34]

Answer:

4.58 ft

Step-by-step explanation:

Pythagoras Theorem:

a^2 +b^2 = c^2

b^2 = c^2 - a^

b^2 =11^2 - 10^2

b^2 = 121 - 100

b^2= 21

the heigh = √21 = 4.58

Answer: 4.58 ft

6 0
2 years ago
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