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garik1379 [7]
3 years ago
7

there are nine single discs in a classroom the rest of the deaths are double desks the classroom has seating for 33 learners how

many double discs are there in the room​
Mathematics
1 answer:
mixas84 [53]3 years ago
8 0
9+2x=33
2x=24
X=12 double desks

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The table shows how much a store charges for certain numbers of pencils. Number of pencils (p) Cost (c) 4 $0.72 7 $1.26 12 $2.16
Arada [10]
Find the rate of change, (y2-y1)/(x2-x1), from the data given...

(2.16-1.26)/(12-7)=0.18

(1.26-0.72)/(7-4)=0.18

Since the rate is constant, this is a linear equation of the form y=mx+b.  Furthermore, since 0 pencils cost 0, b=0, so the cost of the pencils is simply the number of pencils times 18 cents...

c(p)=0.18p  (cost with respect to pencils is 0.18 times the number of pencils)
7 0
3 years ago
Which system of equation should you use to solve this problem
Alex17521 [72]

Last option is the correct answer.

Step-by-step explanation:

Given that

Let x stand for the solution a and y stand for the solution B

So,

According to statement that

30 gallons have to be made

x+y=30

Solution A contains 29 percent bromine => 0.29x

Solution B contains 53 percent  =>0.53y

And the mixture of 30 gallons contains 45% bromine

0.29x+0.53y=30*0.45\\0.29x+0.53y=13.5

Following equations will be used for solving the problem

x+y = 30\\0.29x+0.53y=13.5

Hence,

Last option is the correct answer.

Keywords: Equations, Variables

Learn more about linear equations at:

  • brainly.com/question/10941043
  • brainly.com/question/10978510

#LearnwithBrainly

4 0
3 years ago
Find the amount A accumulated after investing a principle P= $2,000 for t= 8 years at an interest rate r= 6%
Elenna [48]
I=prt

(2000)(.06)(8)

=960
3 0
3 years ago
PLZ help <br><br> (5x10^2)+(4x10^3)
timurjin [86]
10 x 10 = 100
100 x 5 = 500
10 x 10 x 10 = 1,000
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Hope this helped!
7 0
3 years ago
Read 2 more answers
HELP ASAP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Elena L [17]

Answer:

+.5

Step-by-step explanation:

3 0
3 years ago
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