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Naddik [55]
3 years ago
8

Find the sum of 2x^2 - 5x -2 and 4x^2 - 6x + 8

Mathematics
1 answer:
Elena L [17]3 years ago
8 0

6x^2 -11x+6

..........................

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A sound wave is traveling at 6,420m/s and has a frequency of 600Hz. What is the wavelength?
GaryK [48]

Answer:

10.7 m

Step-by-step explanation:

Given that,

The speed of a sound wave, v = 6,420 m/s

The frequency of the wave, f = 600 Hz

We need to find the wavelength of the wave. We can find it using the below relation as follows :

v=f\lambda\\\\\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{6420}{600}\\\\\lambda=10.7\ m

So, the wavelength of the sound wave is equal to 10.7 m.

4 0
3 years ago
Write an equation in standard form for a line that passes through (2,2) and (0,-3).
asambeis [7]
So,

The standard form is:
y = mx + b

First, we find "m," the slope.  Subtract the y-coordinates from each other.  Do likewise with the x-coordinates.

2 - -3 = 5
2 - 0 = 2

Slope = 5/2

y= \frac{5}{2} x+b

Now, we can substitute the second solution into this equation for x and y and solve for "b."

-3= \frac{5}{2} *0+b

-3= b

Now we have our complete equation.

y= \frac{5}{2} x-3
8 0
3 years ago
Bro whats is 3,972 divde 12
leonid [27]

Answer:

The answer would be 331.

6 0
3 years ago
What's the number in the green box​
marishachu [46]

Answer:

Kinda confusing but, I think it is

a=7

b=9

c=19

d=7

sorry it took a while it was confusing and plz give brainliest

Step-by-step explanation:

5 0
3 years ago
Round 519.6597 to the nearest tenth place
EleoNora [17]
To round to the nearest tenth place you are going to round the last two digits of that, you should get 519.7
8 0
4 years ago
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