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Masja [62]
3 years ago
9

Say what a rational number is. Give at least three different examples of rational numbers.

Mathematics
1 answer:
Andrej [43]3 years ago
7 0

Answer:

Rational numbers are one very common type of number that we usually study after integers in math. These numbers are in the form of p/q, where p and q can be any integer and q ≠ 0. Most often people find it confusing to differentiate between fractions and rational numbers because of the basic structure of numbers, that is p/q form. Fractions are made up of whole numbers while rational numbers are made up of integers as their numerator and denominator. Let's learn more about rational numbers in this lesson.

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The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May her driving cost was $380 for 48
andrezito [222]

Answer:

y=0.2x+284

Step-by-step explanation:

Let  x be the distance driven, d-distance and C our constant.

Our information can be presented as:

y=mx+c\\\\450=830x+C\ \ \ \ \ \ \ \ \ eqtn 1\\\\380=480x+C\ \ \ \ \ \ \ \ \ eqtn 2

#Subtracting equation 2 from 1:

70=350x\\x=0.2

Hence the fixed cost per mile driven,x is $0.20

To find the constant,C we substitute x in any of the equations:

450=830x+C\ \ \ \ \ \ \ X=0.2\\\therefore C=450-830\times0.2\\=284

Now, substituting our values in the linear equation:

y=0.2x+284       #y=cost of driving, x=distance driven

Hence the linear equation for the cost of driving is y+0.2x+284

7 0
3 years ago
The perimeter of rectangle field is 160m than find the area of field if its breath is 20m
Sergio039 [100]

Answer:

3200

Step-by-step explanation:

area= (l*b)

area=(160*20)

area=3200

6 0
3 years ago
1. Where will the line y = -1/2 -3 cross the y-axis?
soldier1979 [14.2K]

1) The y- axis is where x = 0, so the line "y = -1/2x - 3" will cross the y-axis when x = 0. You plug in "x = 0" into the equation, and get y = 0 -3, so y = -3. That means the line " y = -1/2x - 3" will cross the y-axis ar (0, -3)

2) If there are 2 parallel lines, then there is no solution, because the definition of parallel lines is, " 2 lines in the same plane, that never meet." That makes the solution inconsistent.

7 0
3 years ago
What function is this?
ArbitrLikvidat [17]
Absolute Value Function
6 0
3 years ago
Read 2 more answers
What is D to the secind power plus 8D plus 7
Feliz [49]
It matters what D is.
the way to do it is like 8 to the third power th math is:
8 times 8=64
8 times 64=512
8 times 512=4096
3 times
7 0
3 years ago
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