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2 years ago

Why is -3 an integer?

2 answers:

5 0

For example, -7 is an integer, 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.

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 = $4.05 \times 10^5km^2$ .

We have to determine the average number of people per square kilometer.

Average number of people per square kilometer =

Land area of California $\div$ Population of California

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

= $1.6 \times 10^{-2}$

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

Read 2 more answers

In triangle XYZ, m∠Z > m∠X + m∠Y. Which must be true about △XYZ?