Determine which system of equation has (-3,19) and (4,-23) as a solution?
1 answer:
Answer:
y=6x+1
Step-by-step explanation:
First you must find the slope of the two points...
which then would equal 6
Then you take the slope and put into point-slope form
(y-y1)=m(x-x1)...take one of the points that is given and plug it into this formula.
so I used (-3,19).
(y-19)=6(x--3)
I would then get y-19=6x+18
Add 19 to both sides and you will get y=6x+1
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Good night,
<span>Irrational numbers are those that can't be expressed as a fraction:
12.89 can be expressed as: </span>
<span>The above numbers can be expressed as a fraction, then the logical answer is: </span>
But we will check the answer:
As you can see we can't express that number as a fraction, so that is te correct answer.
<span>Irrational numbers are those that can't be expressed as a fraction:
12.89 can be expressed as: </span>
<span>The above numbers can be expressed as a fraction, then the logical answer is: </span>
But we will check the answer:
As you can see we can't express that number as a fraction, so that is te correct answer.
Answer:
A
Step-by-step explanation:
The velocity of a moving body is given by the equation:
Is the velocity is <em>positive </em>(v>0), then our object will be moving <em>forwards</em>.
And if the velocity is negative (v<0), then our object will be moving <em>backwards</em>.
We want to find between which interval(s) is the object moving backwards. Hence, the second condition. Therefore:
By substitution:
Solve. To do so, we can first solve for <em>t</em> and then test values. By factoring:
Zero Product Property:
Now, by testing values for t<1, 1<t<4, and t>4, we see that:
So, the (only) interval for which <em>v</em> is <0 is the second interval: 1<t<4.
Hence, our answer is A.