Answer:
8.5
Step-by-step explanation:
d = √[(-7+1)²+(-1-5)²]
= √[(-6)²+(-6)²]
=√(36+36)
=√72
= 8.5
4(5a-8) = 20a - 32. 20a - 32 + 2a = 22a - 32, which is not equal to 12a - 6. Mary is wrong.
Answer:
The greatest common factor is the biggest factor that divides two different numbers. For example, the greatest common factor of 6 and 8 is 2. The least common multiple is the smallest number that two numbers share as a multiple. For example, 12 is a the lowest common multiple of 3 and 4.
Step-by-step explanation:
The signed numbers that represent a change in money from her perspective is:
+$25
+$14
-$10
-$3
+$2
<h3>What are the signs to put in front of the amounts?</h3>
When a person receives money, earns interst or his paid wages, the amount of money the person has increases. Thus, the sign to be used is the addition sign(+).
When a person pays for an item, donates to charity or loses money, the amount of money the person has reduces. Thus, the sign to be used is the subtraction sign (-).
To learn more about addition, please check: brainly.com/question/349488
