The second answer that uses = is not correct, because the pentagons are similar not congruent.
The third answer is not correct, because that sign means estimated, not similar.
I've never seen the fourth sign, so by process of elimination I believe the answer is the first one.
<span>ABCDE~QRSTU</span>
Answer:
9
Step-by-step explanation:
according to the condition it is possible to make up a system of two equations (if to suppose 'l' - the larger number and the 's' - is the smaller one):
1. 'two numbers have a sum of 7' means s+l=7;
2. 'When the smaller number is subtracted from twice the larger number, the result is 20' means 2*l-s=20.
3. the system of two equations is:
4. the larger number is 9.
y = 55/10x + 50 is the equation to represent this situation
<span>The integer subtraction is goverend by the following the simple rules that the subtarction is normal as the natural numbers but the sign of bigger number comes in the final result. For example: -47 is to be subtracted from + 50 then, result = 50-47 = +3. But, see another example, If -7 is to be subtracted form -8 then , we will write as -8 -(-6) = -8 + 6 = -2. These rules are followed : (-)(-) = + and (-)(+) = - and (+)(+) = +</span>
Answer: About 10 ft.
Use Pythagorean's Theorem!
c=
9 * 9 = 81
3 * 3 = 9
81 + 9 = 90
= 3 ≈ 10 ft.