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Anit [1.1K]
3 years ago
8

Which quantity could go in the blank to make the equation below true r+3r+_=6r

Mathematics
2 answers:
AveGali [126]3 years ago
5 0

Answer:

2r

Step-by-step explanation:

r+3r_=6r

The left side would have to equal 6r

right now it is 4r

by adding 2r it would equal 6r making the equation true.

Hope this helps :)

creativ13 [48]3 years ago
4 0

Answer:

2r

Step-by-step explanation:

r+3r+_=6r

Let's simplify this first.  Subtract (r + 3r), or 4r, from both sides, obtaining

0 + _ = 2r

Then the quantity 2r, when placed in the blank, makes the equation true.

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Answer:

a) Null and alternative hypothesis:

H_0: \pi=0.1\\\\H_a:\pi>0.1

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Step-by-step explanation:

a) The hypothesis should be carried to test if the proportion of students that would eat there at least once a week is significantly higher than 10%.

Then, the alternative or spectulative hypothesis will state this claim: that the population proportion is significantly bigger than 10%.

On the contrary, the null hypothesis will state that this proportion is not significantly higher than 10%.

This can be written as:

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