Answer: Third option
Step-by-step explanation:
One of the ways of solving a system of equations is by equating the equations and solving for one of the variables.
In this case we have the system:
Note that if 
is equal 
and also equals 
Then logically must be equal to .
We write equality.
Then the correct answer is the third option.
We can also solve for the variable x
Answer: A. A tessellation that uses only one type of regular polygon
Step-by-step explanation:
When we cover a surface with a pattern of a flat geometric shapes such that there should have no overlaps or gaps, then the surface is called a tessellation.
A regular tessellation is tessellation made up by using nly one type of regular polygon. These are made up of entirely congruent regular polygons all that joining vertex to vertex
Hence, A is the correct option.
If you multiply 1×3 you get 3, if you multiply 2×3 and you get 6. etc. so that is the pattern if that helps at all.
Answer:
It will take her 12.8 weeks
Step-by-step explanation:
It will take 12.8 weeks because 30*12.8=384. If you need the answer in whole weeks she will need to save for 13 weeks to reach her goal. 30*13=390
Answer:
x=15
Step-by-step explanation:
First, you get rid of the parentheses:
2(2x-1) is 4x-2
4(x-5) is 4x-20
3(x+1) is 3x+3
________________________________
2x+4x-2=4x-20+3x+3
6x-2=4x-20x+3x+3
6x-2=7x-20+3
6x-2=7x-17
6x=7x-15
<u>-1x=-15 or x=15</u>
