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3 years ago

-8.1 irrational number or rational

Mathematics

2 answers:

Luda [366]3 years ago

4 0

Answer:

Rational

Step-by-step explanation:

Because it's an actual number that you can graph where irrational would be is if it would be a number that like pie or something where it just goes on and on

PSYCHO15rus [73]3 years ago

3 0

Answer:

Rational

Step-by-step explanation:

-1.8 is a rational number. It has a terminating and non repeating decimal.

$-1.8=-\frac{18}{10} =-\frac{9}{5}$

Hope this helps.

As a little bonus: -8.1 would be rational for the same reason.

$-8.1=-\frac{81}{10}$

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Steph,andra,emily,and becca are planning a road trip from their hometown to san antonio

morpeh [17]

Answer:

a. Emily should begin her turn as the third driver at point (1, -0.5).

b. Emily's turn to drive end at point (-2.5, -3.75).

Step-by-step explanation:

Let assume that the group of girls travels from their hometown to San Antonio in a straight line. We know that each location is, respectively:

Hometown

$H(x,y) = (8,6)$

San Antonio

$T(x,y) = (-6,-7)$

Then, we can determine the end of each girl's turn to drive by the following vectorial expression based on the vectorial equation of the line:

Steph

$S(x,y) = H(x,y) + \frac{1}{4}\cdot [T(x,y)-H(x,y)]$ (1)

$S(x,y) = (8,6) + \frac{1}{4}\cdot [(-6,-7)-(8,6)]$

$S(x,y) = (8,6) +\frac{1}{4}\cdot (-14,-13)$

$S(x,y) = (4.5,2.75)$

Andra

$A(x,y) = H(x,y) + \frac{2}{4}\cdot [T(x,y)-H(x,y)]$ (2)

$A(x,y) = (8,6) + \frac{2}{4}\cdot [(-6,-7)-(8,6)]$

$A(x,y) = (8,6)+\frac{2}{4}\cdot (-14,-13)$

$A(x,y) =(1, -0.5)$

Emily

$E(x,y) = H(x,y) + \frac{3}{4}\cdot [T(x,y)-H(x,y)]$ (3)

$E(x,y) = (8,6) + \frac{3}{4}\cdot [(-6,-7)-(8,6)]$

$E(x,y) = (8,6)+\frac{3}{4}\cdot (-14,-13)$

$E(x,y) = (-2.5, -3.75)$

a. If the girls take turns driving and each girl drives the same distance, at what point should they stop from Emily to begin her turn as the third driver?

Emily's beginning point is the Andra's stop point, that is, $A(x,y) =(1, -0.5)$ .

Emily should begin her turn as the third driver at point (1, -0.5).

b. At what point does Emily's turn to drive end?

Emily's turn to drive end at point (-2.5, -3.75).

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2 years ago

On a map, the distance bewtween the two towns is 2.5 inches, and 1 inch represents 6 mile. What is the actual distance between t

Lilit [14]

Answer: 15

Step-by-step explanation:

Ratio is 1 inch:6 mile

2.5 inches divided by 1 inch equals 2.5 inches

2.5 inches times 6 equals 15

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dsp73

Answer:

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Wittaler [7]

Answer:

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Step-by-step explanation:

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Alenkasestr [34]

Answer:

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Step-by-step explanation:

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