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3 years ago

Chose which group of sets the following number belongs to. Be sure to account for all sets. 30 POINTS EASY

Mathematics

1 answer:

lara [203]3 years ago

7 0

Good evening ,

Answer:

Step-by-step explanation:

Since 2÷7 = 0,285714 285714 285714 285714 285714 285714...

then 2÷7 can not be a natural number therefore statements C , D and E are wrong.

since the pattern 285714 appears repeatedly and infinitely then 2÷7 is rational

then then the statement B is false as well .

conclusion:

the only true statement is A.

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Perform the Indicated operatlon.<br>(-10) ÷ (-20)<br>a)-2<br>b)2<br>c)1/2<br>d)-1/2

Nuetrik [128]

Answer:c

Step-by-step explanation of the

(-10)/(-20)

-1/(-2)

Negative sign result in positive result, so

1/2; c

4 0

4 years ago

The population of a country increases continuously at a rate of 8%. If the current population is 800,000, what will the populati

telo118 [61]

Answer:

The answer is 844,000

Step-by-step explanation:

to make it easier you can break the 800,000 into 8 100,000 pieces, 8% of 100,000 is 8,000, 8,000 times 8 is 44,000 and now just add 800,000 and 44,000.

5 0

3 years ago

The temperature at a point (x, y, z) is given by T(x, y, z) = 300e−x2 − 3y2 − 7z2 where T is measured in °C and x, y, z in meter

Elenna [48]

Answer:

Rate of change $24^{\circ}$ C per meter.

Step-by-step explanation:

Given,

$T(x,y,z)=300e-x_{2}-3y_{2}-7z_{2}$

Then,

$T_{x_2}=-1, T_{y_2}=-3, T_{z_2}=-7$

Change of temperature at the point say, $(x,y,z)=(2,-1,3)$ along the direction say, $(u,v,w)=(6,-4,6)$ is,

$\Big[uT_{x_2}+vT_{y_2}+wT_{z_2}\Big]_{(x,y,z)}$

$=(6\times -1)+((-4)\times (-3))+(3\times 6)$

= $24$

Hence the rate of change of temperature is $24^{\circ}$ C per meter.

3 0

3 years ago

Which is not an equation of the line going through (6,7) and (2,-1)

Alex787 [66]

Answer:

Step-by-step explanation:

cause ik

5 0

3 years ago

Simply the ratio 15 seconds to 3 minutes?

Umnica [9.8K]

To simplify the ratio. You have to find both of these numbers Greatest common factor. Which happens to be 3 :P

So divide each number by 3
15 ÷ 3 = 5
---------------
3 ÷ 3 = 1

So this means our new simplified ratio is...
5 seconds to 1 minute.

Good Luck! :)

6 0

3 years ago