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krok68 [10]
3 years ago
10

Which number is irrational, an integer, and a real number?

Mathematics
1 answer:
Montano1993 [528]3 years ago
6 0

name me some numbers plz

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Need help with these 2 questions as soon as possible thank you​
earnstyle [38]

Answer:

2w+2+w=3w-1+6=4w=2w=2w

8 0
3 years ago
Which expression is in simplest form?
mixas84 [53]

Answer:

The answer is simply A. (3 cube root 8)

Step-by-step explanation:

This is the solution because the cube root of 8 makes 2. All of the other options give a decimal/unsimplified number...

Hope this helps! :)

6 0
3 years ago
QUESTION 1
Kitty [74]

It's difficult to make out what the force and displacement vectors are supposed to be, so I'll generalize.

Let <em>θ</em> be the angle between the force vector <em>F</em> and the displacement vector <em>r</em>. The work <em>W</em> done by <em>F</em> in the direction of <em>r</em> is

<em>W</em> = <em>F</em> • <em>r</em> cos(<em>θ</em>)

The cosine of the angle between the vectors can be obtained from the dot product identity,

<em>a</em> • <em>b</em> = ||<em>a</em>|| ||<em>b</em>|| cos(<em>θ</em>)   ==>   cos(<em>θ</em>) = (<em>a</em> • <em>b</em>) / (||<em>a</em>|| ||<em>b</em>||)

so that

<em>W</em> = (<em>F</em> • <em>r</em>)² / (||<em>F</em>|| ||<em>r</em>||)

For instance, if <em>F</em> = 3<em>i</em> + <em>j</em> + <em>k</em> and <em>r</em> = 7<em>i</em> - 7<em>j</em> - <em>k</em> (which is my closest guess to the given vectors' components), then the work done by <em>F</em> along <em>r</em> is

<em>W</em> = ((3<em>i</em> + <em>j</em> + <em>k</em>) • (7<em>i</em> - 7<em>j</em> - <em>k</em>))² / (√(3² + 1² + 1²) √(7² + (-7)² + (-1)²))

==>   <em>W</em> ≈ 5.12 J

(assuming <em>F</em> and <em>r</em> are measured in Newtons (N) and meters (m), respectively).

3 0
3 years ago
translate this sentence into an equation. 54 is the product of Rita savings and 3. Use the variable r to represent Rita savings.
Sphinxa [80]
54 = 3r. ABC DEFGHIJKLNOPQRSTUVWXYZ
8 0
3 years ago
14-(-5x)+2x-(-32)+4z-2x
castortr0y [4]
-5x + 46 +4z
Combine like terms
-5x + 2x = -3x
-3x + -2x = -5x
14 - (-32) = 46
4z is left alone since it doesn't have a like term.
6 0
3 years ago
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