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Reika [66]
3 years ago
9

When 5/8 of the books had been sold, there were only 309 books remaining. how many books were there originally?

Mathematics
1 answer:
Whitepunk [10]3 years ago
8 0
There were 824 books originally
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attashe74 [19]
(1/3)/(5)= 1/3 * 1/5 = 1/15 of a chocolate bar each friend gets
7 0
3 years ago
Help me now !!!!!!!!!!!!!!!!
miskamm [114]

In the first diagram the value of k is 10 and in the second diagram the value of k is 15/2.

<h3>What is the triangle?</h3>

The triangle can be defined as a three-sided polygon in geometry, and it consists of three vertices and three edges. The sum of all the angles inside the triangle is 180°.

In the first diagram:

The sum of the 5k + 20 and 7k + 40 is 180

5k + 20 + 7k + 40 = 180

12k + 60 = 180

12k = 180 -60

12k = 120

k = 10

In the second diagram:

The sum of the two interior angles is equal to the exterior angle.

40 + 12k + 10 = 8k + 80

4k = 30

k = 30/4 = 15/2

Thus, in the first diagram the value of k is 10 and in the second diagram the value of k is 15/2.

Learn more about the triangle here:

brainly.com/question/25813512

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3 0
2 years ago
kenny has 9 more comic books than bobbie. together they have 95 comic books. define a variable. then write an equation that coul
Hoochie [10]
Number of comic books Bobbie has - b

95 = (9 + b) + b

Since 95 is the total number of comic books both boys have, it is equal to both boys' books added together. However, since we don't know how many books Kenny has, and only that he has 9 more than Bobbie, we can define that as (9 + b), or nine more than b. Then, we add b again, because (9 + b) is the number of books Kenny has, and if we add that to the number of books Bobbie has, it will equal the total of 95 comic books.
3 0
3 years ago
The volume of a cone is 180 in3. find a function that models the height h of the cone in terms of its radius r.
12345 [234]

volume of a cone = (1/3)*pi*r^2*h
180 = pi(r^2)h
180/pi(r*2) = h

5 0
3 years ago
What is the measure for the following angle?<br>AOC​
anygoal [31]

Answer:

40 degrees

cuz 40+40=80

7 0
3 years ago
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