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Rudiy27
2 years ago
10

Why is -3 an integer?

Mathematics
2 answers:
Lera25 [3.4K]2 years ago
5 0
For example, -7 is an integer<span>, so it is also a rational and a real number. The square root of 2 is an irrational number, so it is also a real number.</span>
Nitella [24]2 years ago
5 0
An integer, also called a "round number" or “whole number,” is any positive or negative number that does not include decimal parts or fractions.

Therefore -3 is an integer, but 2.76 or 3 1/2 aren’t.

Hope this helps!! ;))
Have a grat day!! <3
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How do you solve it?
Elis [28]

At heart we're being asked for a line through two points,


(40^\circ \textrm{ C}, 355 \textrm { m/s}) \quad \textrm{and} \quad (49^\circ \textrm{ C}, 360 \textrm { m/s})


In general the line through (a,b) and (c,d) is


(y-b)(c-a)=(x-a)(d-b)


Check that you understand why both (a,b) and (c,d) are on this line.


Here our indepedent variable, instead of x, is T, temperature. Our dependent variable is v, velocity. Substituting,


(v - 355)(49 - 40) = (T - 40)(360 - 355)


9(v - 355) = 5(T - 40)


v-355 = \frac 5 9 T - \frac{200}{9}


v= \frac 5 9 T - \frac{200}{9} + 355


v= \frac 5 9 T + \frac{2995}{9}


That's our answer; let's check it.


When T=40, v = (5/9)40 + (2995/9) = 355 good


When T=49, v= (5/9)49 + (2995/9) = 360 good




7 0
2 years ago
In a recent year, the population of California was about 2.52 x 10^7 people. Its land area is about 4.05 x 10^5 km^2. What was t
andrezito [222]

The population of California = 2.52 \times 10^7 people.

Land area of California = 4.05 \times 10^5km^2.

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Average number of people per square kilometer =

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= 4.05 \times 10^5 \div 2.52 \times 10^7

= 1.6 \times 10^{-2}

Therefore, the average number of people per square kilometer is  1.6 \times 10^{-2}.

It is represented in scientific notation as Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10.

4 0
2 years ago
On a coordinate plane, a straight line and a parallelogram are shown. The straight line has a negative slope and has a formula o
alexira [117]

Answer:

(1,3)

Step-by-step explanation:

edge 2020

6 0
3 years ago
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In triangle XYZ, m∠Z &gt; m∠X + m∠Y. Which must be true about △XYZ?
MissTica
It must be an obtuse triangle

4 0
2 years ago
Simplify 4+(-3)-2 times (-6)
zloy xaker [14]
<span><span>4−3</span>−<span><span>(2)</span><span>(<span>−6</span>)</span></span></span><span>=<span>1−<span><span>(2)</span><span>(<span>−6</span>)</span></span></span></span><span>=<span>1−<span>(<span>−12</span>)</span></span></span><span>=<span>13</span></span>
6 0
2 years ago
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