For what value of x is the rational expression below equal to zero?

Mathematics

1 answer:

aleksandr82 [10.1K]2 years ago

5 0

Answer:

Step-by-step explanation:

Since a rational expression is zero if the numerator is zero, set 3x + 15 = 0.

Therefore, 3x = -15, and x = -5

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We have then that the resulting figure is a rectangle.
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5 0

2 years ago

Read 2 more answers

El caño de una fuente está inclinado 60° sobre la horizontal. Si el agua sale del caño con una velocidad inicial de 10 m/s: a) ¿

jeka94

Answer:

A) Parabola; B) 3.83 m; C) 8.84 m; D) 10 m/s

Step-by-step explanation:

A) Shape of water jet

The water jet has the shape of a parabola.

B) Maximum height

Data:

θ = 60°

u = 10 m/s

a = 9.8 m·s⁻²

Calculations:

1. Calculate the horizontal and vertical components of the velocity

$u_{\text{h}} = u \cos \theta = \text{10 m/s} \times \cos 60 ^{\circ} = \text{10 m/s} \times 0.5 = \text{5 m/s}\\u_{\text{v}} = u \sin \theta = \text{10 m/s} \times \sin 60 ^{\circ} = \text{10 m/s} \times 0.866 = \text{8.66 m/s}$