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3 years ago

10x-15=-8x+21 solve this equation

Mathematics

1 answer:

Natasha2012 [34]3 years ago

8 0

Answer:

x=2

Step-by-step explanation:

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Simplify<br> (−2a^2b^4)^3

padilas [110]

Answer:

- $-\frac{8a^6}{b^12}$

Step-by-step explanation:

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3 years ago

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iren [92.7K]

It is <span>B</span>. All u have to do is -2a/b which is 2 then plug 2 in and you get (2,1)

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3 years ago

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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

Find the value of in the triangle shown below.

Vesnalui [34]

Step-by-step explanation:

in isoscles triangles two angles and lengths are equal .

two sides equal 3.5

so both of the angles are 55°

the sum of the angles in a triangle is 180°, so

x = 180° - 55° - 55°

x = 70° (Ans)

6 0

3 years ago

5. PLEASE HELP ME

Serga [27]

Answer:

7x=11

Step-by-step explanation:

do it

4 0

3 years ago