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Talja [164]
3 years ago
6

Is this set closed or not closed under the operation ? Negative integers under multiplication

Mathematics
1 answer:
Romashka [77]3 years ago
5 0

The set is not closed

Example:

-4 * -3 = 12  this is not a negative integer

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What is the value of x in the equation shown below?<br> x^3−5=59
ICE Princess25 [194]

Answer: This is an easy one, its either 21, 21 and a half, or 22, if not than its at least in the 20s.

Step-by-step explanation:

4 0
2 years ago
To the nearest tenth, find the perimeter of ∆ABC with vertices A(-1,4), B(-2,1) and C(2,1).
swat32

First we need to find the length of each side of the triangle , and for that we need to use the distance formula, that is
d =\sqrt{(x_{2} -x_{1})^2 +(y_{2} -y_{1})^2}
AB = \sqrt{(1-4)^2 +(-2+1)^2}= \sqrt{10}
\sqrt{BC} = \sqrt{(1-1)^2 + (2+2)^2}=4
Perimeter is the sum of all sides.
Perimeter = AB + BC + AC = \sqrt{10}+4 +\sqrt{18}
Perimeter= 11.4

7 0
3 years ago
If the angles of a triangle are 2x+1, x, and x+15 what are the measures
sammy [17]

Answer:

The three angles of the triangle are 41°, 56° and 83°.

Step-by-step explanation:

The three angles of a triangle are given by 2x + 1, x and x + 15.

Now, we know the property of triangle, that 180° is the sum of all the angles of a triangle.

Hence, (2x + 1) + x + (x + 15) = 180°

⇒ 4x + 16 = 180

⇒ 4x = 164

⇒ x = 41°

So, 2x + 1 = 83° and x + 15 = 56°

Therefore, the three angles of the triangle are 41°, 56° and 83°.

3 0
2 years ago
Who ran faster, noah or lin?
Rufina [12.5K]
Noah ran faster because he ran more distance then lin
4 0
2 years ago
Is 1 3/23 a rational number
UkoKoshka [18]

Answer:

Yes

Step-by-step explanation:

In mathematics rational means "ratio like." so a rational number is one that can be written as the ratio of two integers. 1 3/23 can be converted into 26/23, which is a ratio, therefore, 1 3/23 is a rational number.

Hope this helps!

4 0
2 years ago
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