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geniusboy [140]
3 years ago
10

Which expression results in a rational number?

Mathematics
2 answers:
Marizza181 [45]3 years ago
7 0

Answer:

Step-by-step explanation:

2 i think

creativ13 [48]3 years ago
3 0
3 because the root of 36 is 6 and the root of 225 is 15. Hope this clarifies. For 2, the root of 25 is 5, but 50 is not a perfect square.
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John rolls a six-sided number cube twice. What is the probability of getting an even number and then an odd number?
lubasha [3.4K]

Answer:

Option 2 - \text{Probability}=\frac{1}{4}

Step-by-step explanation:

Given : John rolls a six-sided number cube twice.

To find : What is the probability of getting an even number and then an odd number?    

Solution :              

When rolls a six-sided number cube twice

(1,1)  (1,2) (1,3)  (1,4)  (1,5)  (1,6)  

(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)  

(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)  

(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)  

(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)  

(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)  

Now,  

\text{Probability}=\frac{\text{Favorable outcome}}{\text{Total number of outcome}}

Favorable outcome of getting an even number and then an odd number:

(2,1) (2,3) (2,5) (4,1) (4,3) (4,5) (6,1) (6,3) (6,5)

So, Favorable outcome = 9

Total number of outcome = 36

\text{Probability}=\frac{9}{36}

\text{Probability}=\frac{1}{4}

Therefore, Option 2 is correct.

4 0
3 years ago
Find the distance between -10.5 and 7 on a number line (geometry)
SashulF [63]

Answer:

17.5

Step-by-step explanation:

|-10.5| + 7 = their combined distance

=17.5

6 0
3 years ago
Read 2 more answers
A few years​ ago, a census bureau reported that​ 67.4% of American families owned their homes. Census data reveal that the owner
Vanyuwa [196]

Answer:

(B) The citizens of the city, because they lose help they could have used to buy a home.

Step-by-step explanation:

Nul and alternative hypotheses are:

  • H_{0}: the rate of home ownership is the same after tax cut
  • H_{a}: the rate of home ownership is increasing after tax cut

Type II error occurs when one fails to reject null hypothesis when the null hypothesis was wrong.

In this case Type II error happens when the conclusion is the rate of home ownership is not increasing after tax cut, where actually it is.

With this conclusion city council does not continue tax cut, and citizens of the city is harmed because they lose help they could have used to buy a home.

8 0
3 years ago
What is the slope of a line that passes through the two points (12, -18) and (11,12)
Olin [163]
The slope is -30 because when u calculate the rise over run it gets to -30
7 0
2 years ago
Read 2 more answers
I need helppppp ughhhhhhh
GarryVolchara [31]
Wrong person I pay someone to do my math for me :)
7 0
3 years ago
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