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OLga [1]
3 years ago
8

Can someone answer number 11?

Mathematics
2 answers:
Zinaida [17]3 years ago
6 0
1- rational 2- rational. Hope this helped!!
Anna71 [15]3 years ago
5 0

Answer:

Step-by-step explanation:

To be rational means to be able to express the result as the ratio of two whole numbers.

a) 4/7 + (-1/3) = 12/21 - 7/21 = 5/21 so rational

b) √(4) • 2/5 = ±2 • 2/5 = ±4/5 so both solutions are rational

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Solve the system of equations by elimination <br> 3x+4y=31<br> 2x-4y=-6
ANEK [815]
3x + 4y = 31
2x - 4y = -6

*The +4 and -4 in the center of the equation cancel out because 4-4 = 0*

3x = 31
2x = -6
------------

*add like terms*

3x + 2x = 5x

31 - 6 = 25

So now you should have this written on your paper ... > 5x = 25

*Divide by 5 on each side*

5x = 25
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5      5

x = 5
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3 years ago
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ICE Princess25 [194]

Answer:

The weights within this range are:

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Step-by-step explanation:

The graph represents the normal distribution with a mean of 9.5 and a standard deviation of 0.5. Therefore, the range of the values within 2 standard deviations is:

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8 0
3 years ago
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Ipatiy [6.2K]

Answer:

the first one

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