3 years ago

11. A wave has a wavelength of 125 meters is moving at a speed of 20 m's. What is its frequency?

Mathematics

1 answer:

olga_2 [115]3 years ago

3 0

Answer:

.16hertz

Step-by-step explanation:

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Exactly how many planes contain points J, K, and N? 0 1 2 3

Archy [21]

Answer:

Step-by-step explanation:

JK and KN is perpendicular.

Thus no planes contained them except 1

Which is a rectangle.

I hope this helps you :)

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2 years ago

If ON= 5x - 7, LM = 4x+ 4, NM = x -7, and OL =3y-4, find the values of c and y for which LMNO MUST BE a parallelogram.

Sholpan [36]

Answer:

x=11, y=8/3

Step-by-step explanation:

Consider quadrilateral LMNO. If this quadrilateral MUST BE a parallelogram, then

LM=NO

and

LO=MN

Thus,

$\left\{\begin{array}{l}4x+4=5x-7\\ \\x-7=3y-4\end{array}\right.$

Solve this system of two equations. From the first equation:

$4x-5x=-7-4\\ \\-x=-11\\ \\x=11$

Substitute it into the second equation:

$11-7=3y-4\\ \\3y-4=4\\ \\3y=4+4\\ \\3y=8\\ \\y=\dfrac{8}{3}$

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3 years ago

Simplify the following expression 7a + 5b - 2a + b

Papessa [141]

5a+6b would be the simplified answer

7 0

1 year ago

Read 2 more answers

WILL GIVE BRAINLIEST

sladkih [1.3K]

Hii :D I’m pretty sure it’s D because the equation can be rewritten in standard form or implicit form

Have a great day! I’m so sorry if I’m wrong

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3 years ago

1. Use pictures or words to

8_murik_8 [283]

Answer:

Step-by-step explanation:

Good thing you said it was Canadian Money. Pennies are gone and loonies and toonies are used.

1 Toonie = $2.00

1 Loonie = $1.00

3 quarters= .75

2 dime .10

3.85

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2 years ago