Can someone help me? I'm terrible at math lol

Answer:

D

Step-by-step explanation:

Following Pythagorean Theorom, we know a^2 + b^2 = c^2. We know b and c.  a^2 + 5^2 = 13^2.

a^2 + 25 = 169

a^2 = 144

a = √144

a = 12

So, the answer is 12, which means we pick D

CORRECT ANSWER WILL GET BRAINLIEST
Simpify:

PLEASE ANSWER AS FAST AS POSSIBLE!! A group of friends went out to eat. The bill came to $75.50 and was subject to 8.25% sales tax. The group then added 18% sales tax to the total after tax. What was the amount of sales tax the group paid?

Lillian lost her ELA book. Her school charges a lost book fee of 60 % of the cost of the book. Lillian received a notice stating she owed the school $45 for the lost book.

How much did the school pay for the book?
Question 5 options:

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You can help, right? Please explain, too!

WILL MARK BRAINLEST Lillian lost her ELA book. Her school charges a lost book fee of 60 % of the cost of the book. Lillian received a notice stating she owed the school $45 for the lost book.

Which equation best represents the proportional relationship between the school’s cost for the book and the amount a student must pay for a lost book. Let c represent the school’s cost of the book in dollars and d represent the student’s cost in dollars
Question 4 options:

d = .60c


c = .60d


d = 45c


c = 45d

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