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BARSIC [14]
2 years ago
9

You are rearranging your bookshelf to make it more interesting and harder to find anything on it. On one of the shelves you plan

to put 13 biographies and 6 mysteries. How many ways can you arrange them on the shelf if you don't want any two mystery books next to each other (i.e. they need to be separated by at least one biography, maybe more...).
Mathematics
1 answer:
Leto [7]2 years ago
8 0

Answer:

for every 2 biographies you put 1 mystery book until you get to the middle then there will be 3

Step-by-step explanation:

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Each month, Anna pays $630 in rent. How much rent does she pay over the course of 18 months?
Ilia_Sergeevich [38]

Answer:

$11,340

Step-by-step explanation:

1 month: 630

18 months: 18×630=11,340

7 0
3 years ago
Find the Y intercept of the graph
zhenek [66]

Answer:

6

Step-by-step explanation:

The intercept would be 6 because that's the point on the Y line or the line going vertically.    

8 0
2 years ago
at silver gym membrship is 25$ per month and personal training sessions are thirty dollars each.At fit factor membership is 65$
NARA [144]
25+30x=65+20x
30x=40+20x
10x=40
x=40/10
x=4

x is for the number of sessions

ANSWER: 4 sessions
It will cost 145$ for both gyms after 4 sessions.
3 0
3 years ago
Read 2 more answers
EXPAND THE POLONOMIAL <br><br> (5a+1/2b)^2 HELPPP ASAP
stepan [7]

Answer:

25a^{2}+5ab+\frac{b^{2} }{4}

Step-by-step explanation:

(5a+\frac{1}{2} b)^{2}

1. First, write out the expression without the square

(5a+\frac{1}{2} b)(5a+\frac{1}{2} b)

2. Then use foil to multiply:

5a*5a+5a*\frac{1}{2}b+\frac{1}{2}b*5a+\frac{1}{2}b*\frac{1}{2}b

=25a^{2}+5ab+\frac{b^{2} }{4}

3. That is your answer.

8 0
3 years ago
Help me now please thanks
lesya692 [45]
Circumference because if you rolled the parallelogram into a circle, the dotted line would go around the outside of it.
3 0
3 years ago
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