All categories

3 years ago

Which number is irrational?

Mathematics

2 answers:

serious [3.7K]3 years ago

8 0

Answer:

The square root of 3

Step-by-step explanation:

c last answer

nlexa [21]3 years ago

8 0

Answer:

$\sqrt{3}$

Step-by-step explanation:

It cannot be written as a fraction.

<em>Hope this helped, make sure to make this brainiest, thank you.</em>

You might be interested in

20. What is the order of rotational symmetry for each design (i.e. what is the angle of rotation to create

Minchanka [31]

Your answer should be:

<em>The order of rotational symmetry of a regular polygon is the same as the number of sides of the polygon. You can also deduce the order of rotational symmetry by knowing the smallest angle you can rotate the shape through to look the same. 180° = order 2, 120° = order 3, 90° = order 4. </em>

<em>I hope this helped :) </em>

||:+Brainliest appreciated+:||

<h2>Have a wonderful day!</h2>

-- Juri Davis

5 0

3 years ago

Mr. Smith is flying his single-engine plane at an altitude of 2400 feet. He sees a cornfield at an angle of depression of 30º. W

Svet_ta [14]

Answer:

Height of the fighter plane =1.5km=1500 m

Speed of the fighter plane, v=720km/h=200 m/s

Let be the angle with the vertical so that the shell hits the plane. The situation is shown in the given figure.

Muzzle velocity of the gun, u=600 m/s

Time taken by the shell to hit the plane =t

Horizontal distance travelled by the shell =u

Distance travelled by the plane =vt

The shell hits the plane. Hence, these two distances must be equal.

t=vt

u Sin θ=v

Sin θ=v/u

=200/600=1/3=0.33

θ=Sin

−1

(0.33)=19.50

In order to avoid being hit by the shell, the pilot must fly the plane at an altitude (H) higher than the maximum height achieved by the shell for any angle of launch.

max

sin

(90−θ)/2g=600

/(2×10)=16km

4 0

3 years ago

What is the solution to the system of equations? ⎧⎩⎨⎪⎪x+3y−z=24x+2y+5z=13x+z=12 (−4, 1, −3) (3, 0, 3) (5, −2, −3) (−1, 2, 3)

snow_tiger [21]

<h3>Answer:</h3>

(5, -2, -3)

<h3>Explanation:</h3>

We assume your equations are ...

x +3y -z = 2
4x +2y +5z = 1
3x +0y +z = 12

These have solution (x, y, z) = (5, -2, -3).

_____

Trying the choices in the last equation eliminates the first and last. Trying the second choice in the first equation eliminates it, leaving the 3rd choice as the answer you're looking for.

We also know because we can ask a graphing calculator to solve the matrix equation (or row-reduce the augmented matrix).

<em>Comment on this problem</em>

The hardest part of this problem is figuring your intent. The equations are not well-separated, so we have a hard time telling what is a constant and what is a coefficient. It took a couple of guesses to sort it out. A little editing before posting would be helpful.