All categories

3 years ago

What are the truth values of Q v ~R?

Mathematics

1 answer:

GREYUIT [131]3 years ago

4 0

Answer:

ttft

Step-by-step explanation:

You might be interested in

Solve for x. Someone please help me I really need it.

valkas [14]

Answer: X= 3.75

HOPE THIS HELPS:)))))

Step-by-step explanation:

5 0

3 years ago

3х2 = 147<br> Solve by undoing

Dmitry_Shevchenko [17]

Answer: +/- 7

Step-by-step explanation:

3x² = 147

To solve for x divide through by three first.

3x² = 147

x² = 49, now we take the square root of both side by trying to apply laws of indices.

√x² = √49

The square root will neutralize the effect of the square because

√a = a¹/² so (x²)¹/², and (x²)¹/² =

x²×¹/² = x, therefore the solution is

x = +/- 7.

3 0

3 years ago

If sec theta = - √30 / 3, find cos theta.<br> if sin(-theta) = -0.97, find cos (π/2 - theta).

Cloud [144]

Step-by-step explanation:

$\cos \theta = \frac{1}{ \sec\theta } = - \frac{3}{ \sqrt{30} } = - \frac{3 \sqrt{30} }{30} = - \frac{ \sqrt{30} }{10}$

$\cos( \frac{\pi}{2} - \theta )= \cos \frac{\pi}{2} \cos \theta + \sin \frac{\pi}{2} \sin \theta$

Note that

$\sin( - \theta) = - \sin \theta$

$\cos \frac{\pi}{2} = 0 \: \: \: \: \: \sin \frac{\pi}{2} = 1$

Therefore,

$\cos( \frac{\pi}{2} - \theta ) = 0.97$

5 0

3 years ago

What are 3 isosceles triangles?

Maslowich

The answer is acute, right, and ontuse

6 0

3 years ago

What is the best first step for solving the given system using substitution while avoiding fractions

Eduardwww [97]

Hi, hope you’re having a good day.

You should probably add an attachment.

Please do! Thanks, Have a great day! ❤️❤️

6 0

3 years ago