*This is an answer I found elsewhere on Brainly.*
(4+√10)(4-√10)
=16-4√10+4√10-10
=6
------------------------------
(4+√10)+(4-√10)
=4+√10+4-√10
=8
----------------------------
The numbers are:
4+√10, and 4-√10
Answer:
a)2/5
b)3/5
Step-by-step explanation:
a) 12 are boys and 30 is the whole class so 12/30=6/15=2/5
b)if 12 are boys then 30-12=18 girls
18/30=3/5
<span>Depending on the equation there can be three possible cases:
1- There can be 1 specific solution for the variable:
2x+4= 3
where x= -1/2
2- there can be an infinite amount of solutions:
2x+x-2=3x-3+1
where x=x
3- there can be no answer:
3+2x-x=5-3x+4x
where the solution doesn't exist</span>
Answer: Factor 8m^2+30m+7. 8m2+30m+7 8 m 2 + 30 m + 7.
Step-by-step explanation:
<h3>Hello there!</h3>
The first thing we need to do here is see which information is relevant.
The question is asking for the ratio of books to pencils.
Therefore, we only need the number of books and pencils - all other information given is irrelevant in this scenario.
Number of books - 4
Number of pencils - 7
Now, we can order this as a ratio.
A ratio is two numbers put as a proportion. It's normally written out as first number : second number.
In this case, it's the ratio of number of books : number of pencils.
Fill in the number of books and number of pencils into each side of the equation.
number of books : number of pencils
4 books : 7 pencils (the unit is normally dropped)
So therefore, 4:7 would be your final answer.
Hope this helped!
