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8090 [49]
2 years ago
11

A student reading his physics book on a lake dock notices that the distance between two incoming wave crests is about 2.4 m and

he then measures the time of arrival between wave crests to be 1.6 seconds. What is the approximate speed of the waves?​
Mathematics
1 answer:
mojhsa [17]2 years ago
4 0

Answer:

v=2.4/1.6=1.5 m/s

Hope it helps

Have a good day

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A
tatuchka [14]

Alright, lets say the measure of the 3rd angle (the smallest one) is  x degree, then measure of the 1st angle will be (x + 25) degree, and 2nd one: 3x degree. The sum of all the angles in any triangles is 180 degrees.

(x + 25) + 3x + x = 180

5x + 25 = 180 ---> 5x = 180 - 25 ---> 5x = 155 ---> x = 155/5 ---> x = 31o (third angle)

31 + 25 = 56o (first angle)

3 × 31 = 93o (second angle)

56 + 93 + 31 = 180

8 0
2 years ago
Need help with 5 and/or 6
andre [41]

Answer:

ok

Step-by-step explanation:

not really hard if you concentrate

right now check the curve and see if you'll see x axis

8 0
2 years ago
Find the area of a circle if the circle is 5 m long
SpyIntel [72]

Answer:

A≈78.54

Step-by-step explanation:

A=πr2

I think this is right

6 0
3 years ago
The vertices of triangle QRS have coordinates Q(1, −2), R(3, −2), and S(2, −4).
Mamont248 [21]
The vertices of triangle QRS have coordinates Q(1, −2), R(3, −2), and S(2, −4). The coordinates are the coordinates of the vertices of triangle QꞌRꞌSꞌ when triangle QRS is reflected across the x-axis <span>Qꞌ(1, 2), Rꞌ(3, 2), Sꞌ(2, 4). The answer is  letter B.</span>
6 0
3 years ago
It's from the chapter : "exponents and powers"<br>i need the workings too<br>please help​
labwork [276]

Answer:

505/19

Step-by-step explanation:

Easy

so [3^3-(1/2)^(-3)*(1/19)]

simplify

3^3-8/19

3^3=27

27-8/19

convert element to fraction

(27*19)/19-8/19

combine

(27*19-8)/19

505/19

Have a wonderful day ask me if you have more questions about MATH that goes for anyone who needs math help

5 0
3 years ago
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