you have a quadratic equation that can be factored, like x2+5x+6=0.This can be factored into(x+2)(x+3)=0.
So the solutions are x=-2 and x=-3.
2.
<span><span>1. Try first to solve the equation by factoring. Be sure that your equation is in standard form (ax2+bx+c=0) before you start your factoring attempt. Don't waste a lot of time trying to factor your equation; if you can't get it factored in less than 60 seconds, move on to another method.
</span><span>2. Next, look at the side of the equation containing the variable. Is that side a perfect square? If it is, then you can solve the equation by taking the square root of both sides of the equation. Don't forget to include a ± sign in your equation once you have taken the square root.
3.</span>Next, if the coefficient of the squared term is 1 and the coefficient of the linear (middle) term is even, completing the square is a good method to use.
4.<span>Finally, the quadratic formula will work on any quadratic equation. However, if using the formula results in awkwardly large numbers under the radical sign, another method of solving may be a better choice.</span></span>
Answer:
e. 1.28
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of . This is our critical value.
So it is z with a pvalue of , so
The correct answer is:
e. 1.28
Set A has a college student population with the sum closest to 78,000.
Step-by-step explanation:
Step 1:
First, we need to determine the sums of college student populations.
Set 1;
Set 2;
Set 3;
Set 4;
Now we determine the difference in populations between the given sets and 78,000.
Set 1;
Set 2;
Set 3;
Set 4;
Set 1 has the minimum difference of all the sets, so it is the answer.
Answer:
find the perimeter of the pool and multiply it wih the area of the tiles
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
2x3=6