Answer:
x=5
Step-by-step explanation:
2x+5=15
-5 -5
________
2x+0=10
2x= 10
__ __
2 2 the 2 small lines just mean ÷
x=5
Answer:
The scale factor is 
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor
so

therefore
The scale factor is 9/7
Find the value of x
The value of x is equal to


Answer:
This means that there were 45 total problems.
Step-by-step explanation:
To find the total number of problems, add all of the different categories together.
Total = Himself + With Sal + Left
Total = 23 + 13 + 9
Total = 45
Use the inverse sine function on a calculator.
arcsin (0.88) = 1.08 radians
1 x 9, 3 x 3, 9 x 1
1 and 9 are a factor pair of 9 since 1 x 9= 9
3 and 3 are a factor pair of 9 since 3 x 3= 9
9 and 1 are a factor pair of 9 since 9 x 1= 9