It seems that you have missed the necessary options to answer this question, but anyway, hope my answer helps. The question that you ask when understanding the problem would be this: "<span>what do I want to find out?"
Since the problem seeks for an answer, this would be the correct question. Hope this helps.</span>
Answer:320
Step-by-step explanation:
2/5 of the students surveyed lisen to country. So to make the percentage fit the total student population, you figure out what your 2/5 is in a percetnage. That comes out to 40%. so, 40% of 800 is 320.
Answer:
The student assumed he was asked to factor
(a^2 - b^2)
Which is equal to
= (a+b)*(a-b) (His response)
But, he was asked to simplify
(a^2 + b^2)
Which has imaginary roots, and can be factored as:
(b +ai)(b-ai)
Answer:A
Step-by-step explanation:
Answer:
y= 11
Step-by-step explanation:
First label the 2 equations.
y= 5x +6 -----(1)
y= x +10 -----(2)
susbt. (1) into (2):
5x +6= x+10
5x -x= 10 -6 <em>(bring</em><em> x terms to 1 side, constant to the </em><em>other)</em>
4x= 4 <em>(</em><em>simplify</em><em>)</em>
x= 4 ÷4
x= 1
susbt. x=1 into (2):
y= 1 +10
y= 11 <em>(</em><em>simplify</em><em>)</em>
Thus, the value of y is 11.
