2 years ago

Determine whether the number is rational or irrational: -21*

Mathematics

1 answer:

timofeeve [1]2 years ago

6 0

Answer:

Rational

Step-by-step explanation:

Pi is a rational number

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7 es un número natural?

Snezhnost [94]

Answer:

Sí, 7 es un número natural

Step-by-step explanation:

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2 years ago

Identify the surface whose equation is given. rho2(sin2(φ) sin2(θ) + cos2(φ)) = 49

Paha777 [63]

Answer:

The surface is a cylindrical surface with radius 7 units

Step-by-step explanation:

The equation is properly written as:

$\rho^{2} (sin^{2} \phi sin^{2} \theta + cos^{2} \phi) = 49$

The above equation takes the form $y^{2} + z^{2} = r^{2}$

Where $y^{2} = \rho^{2} sin^{2} \phi sin^{2} \theta$

$y = \rho sin \phi sin \theta$

and $z^{2} = \rho^{2}cos^{2} \phi$

$z = \rho cos \phi$

$r^{2} = 49$

r = 7 units

The surface is a cylindrical surface with radius 7 units

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2 years ago

How do i put -8-3x=y in slope intercept form?

masha68 [24]

Slope intercept form : y = mx + b
<span>
-8-3x=y
</span>y = -3x - 8

Answer would the be : y = -3x - 8

6 0

2 years ago

Debbie needs 6 cups of cherry soda. She has 20 ounces. How many more fluid ounces of cherry soda

chubhunter [2.5K]

Answer:

48 fluid ounces.

Step-by-step explanation:

8 fluid ounces = 1 cup

So, we need to multiply 8 by 6.

8 x 6 = 48...That's your answer!

3 0

1 year ago

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Please help r ÷ 16 = 4 <br> r = ____

leonid [27]

4 x 4 = 16

16 / 4 = 4

r = 4

Hope this Helps:)))

6 0

3 years ago

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