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viktelen [127]
3 years ago
13

MATH HELP!! TEN POINTS

Mathematics
1 answer:
Brut [27]3 years ago
5 0
B because u add 268.38+382.69+68.34=719.41 then u take 719.41-15%=611.4985
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Can someone please help me this this??
Brrunno [24]

Answers:

bio = 258

sociology = 169

============================================================

Work Shown:

x = number of bio textbooks

y = number of sociology textbooks

x+y = 427 books sold total

y = x-89 since 89 less sociology textbooks were sold compared to bio

Apply substitution to get the following

x+y = 427

x+x-89 = 427 ... replace y with x-89

2x-89 = 427

2x = 427+89

2x = 516

x = 516/2

x = 258 bio textbooks were sold

y = x-89

y = 258-89

y = 169 sociology textbooks were sold

5 0
1 year ago
The musical frequency of notes is decreasing between beat numbers ___ and ___
eduard
The complete question in the attached figure

we have that
between beats 2 and 3----------> (392-261.6)=130.4-------> increases
between beats 3 and 4----------> (392-392)=0-----> <span>it stays with the same value
</span>between beats 4 and 5----------> (444-392)=52--------> increases
between beats 5 and 6----------> (444-444)=0-----> it stays with the same value
between beats 6 and 7----------> (392-444)=-52-------> decreases

the answer is
between beats 6 and 7----------> (392-444)=-52-------> decreases

7 0
3 years ago
Read 2 more answers
Michelle had a $100. bill she wants to purchase paper pins ($20) and file covers ($20) and paper weights. each paper weight cost
slega [8]
Hi!

100/10 = 10

If Michelle only buys paper weights, she can buy 10 of them with $100
8 0
3 years ago
Read 2 more answers
4.0 divided by 0.02=
elena-14-01-66 [18.8K]

Answer:

200

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
a circus charges $2.50 for kids tickets and $6 for adult tickets last week and twice as many kids attended the circus than adult
aliina [53]
Let
x-----------> the number of kids
y----------> the number of adults

we know that
2.5x+6y=$7150---------> equation 1
x=2y-------------> equation 2
substitute 2 in 1
2.5*[2y]+6y=7150-----> 5y+6y=7150----> 11y=7150-----> y=650
x=2y----> x=2*650----> 1300

the answer is
the number of kids is 1300
5 0
3 years ago
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