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mezya [45]
2 years ago
14

use interval notation to express the following: the set of all numbers greater than or equal to 5 and less than or equal to 7​

Mathematics
1 answer:
irina1246 [14]2 years ago
8 0

[5, +∞) ∪ (-∞,7] is the notation to express the set of all numbers greater than or equal to 5 and less than or equal to 7​.

We need to use interval notation to express the set of all numbers greater than or equal to 5 and less than or equal to 7​.

<h3>What is a set?</h3>

A set is a mathematical model for a collection of different things; a set contains elements or members, which can be mathematical objects of any kind: numbers, symbols, points in space, lines, other geometrical shapes, variables, or even other sets.

Let x belong to the set of real numbers (R)

Now, x≥5 and x≤7.

So, x≥5⇒[5, +∞) and x≤7⇒(-∞,7]

Therefore, the notation will be [5, +∞) ∪ (-∞,7].

To learn more about sets visit:

brainly.com/question/8053622.

#SPJ1

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3 years ago
Solve this system of liner equations.separate the -x and y - values with a comma. 2x=96-14y 9x=40-14y
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<span>A) 2x=96-14y
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Multiplying equation A by -1
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Consider two people where one person is 25​% taller than the other but proportioned in exactly the same way.​ (That is, the tall
egoroff_w [7]

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46.25

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If they are proportioned exactly the same, then everything on the taller person is <em>25%</em> larger

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3 years ago
If n and k are positive integers, is n divisible by 6 ? (1) n = k(k + 1)(k – 1) (2) k – 1 is a multiple of 3.
xz_007 [3.2K]

Answer: yes, it is

Step-by-step explanation:

A number is divisible by 6 if it is divisible by 2 and 3 simultaniously.

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If k-1 is a multiple of 3, n is divisible by 3, so one of the requirements is ok.

Now, if k-1 is a multiple of 3, it can be even or odd.

if k-1 is even, then it is divisible by 2 and as it is divisible by 3 as well, n is divisible by 6

if k-1 is odd, then k and k+1 is even, hence, divisible by 2.

As n = k(k+1)(k-1), n is also divisible by 6.

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