Answer: She answer 75% correctly
Step-by-step explanation:
150÷200= .75×100
5a+3b = 24
(5+a)(3+b) = 49
The order of steps are different because one requires multiplication then addition while the other one requires addition then multiplication. But one sure thing is that they both need substitution.
Answer:
<em>B) x = 3</em>
Step-by-step explanation:
lets plug in the first option to see if it works
3x=9
3*27=9
<em>thats not right</em> ( 3*27 = 81 )
Next, we try the second option
3x=9
3*3=9
<em>that looks more like a resonable answer right?</em>
<em>now to check our work</em>
3+3+3=9
<em>Its correct!</em>
<em></em>
<em>Hope that helps</em>
May~
<em></em>
There are 15 biography books and there are 48 books in total so the ratio is 15:48
The given expression
is equal to 144 or 
<em><u>Solution:</u></em>
Given expression is:

We have to evaluate the above given expression
We know that,


Substituting these in above given expression, we get

Also we know that,

Therefore,

Thus the given expression
is equal to 144 or 