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valentinak56 [21]
3 years ago
12

Which is the graph of X^2/9-y^2/4=1

Mathematics
1 answer:
lesantik [10]3 years ago
7 0

Answer:

a.

Step-by-step explanation:

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What is the simplified form of the quantity y-squared plus 7y plus 12 over the quantity y-squared plus 8y plus 15
Burka [1]
Firstly, let's factorise each equation individually - to do this, find 2 numbers that when summed add to the value of the second term, and when multiplied give the value of the third term.

7 and 12 give us 4 and 3 (4+3=7, 4*3=12) -- 8 and 15 give us 5 and 3 (5+3=8, 5*3=15)

Now we can rewrite these equations as (y+4)(y+3) and (y+5)(y+3) respectively.

Putting this in a fraction: (y+4)(y+3)/(y+5)(y+3) -- We can clearly see that there is a y+3 on both sides of the fraction, and given there are no terms outside of the brackets being multiplied, we can directly cancel.

This gives us our final answer:
(y+4)/(y+5)
8 0
3 years ago
Plz help me. first to answer get brainliest
laiz [17]

Answer:

A 28 because 7 times four

Step-by-step explanation:

4 0
3 years ago
I need someone to help me with this question?
-Dominant- [34]

AAB  I think that's it get back to me If its wrong



6 0
3 years ago
A school district's superintendent wants to administer a test of life skills to a sample of students. The superintendent has amp
tangare [24]

Answer:

-Convenience Sampling

Step-by-step explanation:

Convenience Sampling is a sampling method that is employed simply because the samples are easy to reach or access. It is a non-probability system of sampling and not a very strong method of sampling. For a serious research such as the one being conducted by the Superintendent, who has ample time to perform the research, this is not a very good sampling method. A Convenience style of research would mean that he can just walk into a cafeteria with students and administer the test to them.

Since he has detailed information of the students, he should choose any of the other mentioned sampling techniques in the options provided to randomly select the subjects. <em>This would help to</em> prevent bias, and enable him to make generalizations with the result of the research.

6 0
3 years ago
The cube below has a side length of one unit. What is its volume?
sergiy2304 [10]
1*1*1=1

D. 1 Cubic Unit(s)

height*width*length=volume
5 0
3 years ago
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