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irina1246 [14]
3 years ago
6

Pls pls pls help me this is due soon

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
6 0

Answer:

x+18

Step-by-step explanation:

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40 tickets were sold for a concert, some at 75 cents and the rest at $1.25. if the total raised was $42, how many had the cheape
Murljashka [212]

Answer:

34

Step-by-step explanation:

$1.25 = 125 cents.

$42 = 4200 cents

Tickets sold at 75 cents = x

Tickets sold at 125 cents = y

x + y = 40

75x + 125y = 4200

Multiply the first equation by 75

75x + 75y = 3000

75x + 125y = 4200

Subtract the the second equation from the first.

75x + 75y = 3000

- 75x + 125y = 4200

-------------------------------

0 - 150y = - 1200

Divide both sides by - 150

-150y/-150 = -1200/-150

y = 8

Substitute y = 8 into the first equation

x + y = 42

x + 8 = 42

x = 42 - 8

x = 34

34 tickets were sold for 75 cents

8 tickets were sold for $1.25

3 0
3 years ago
Someone lent me a book and they told me they left something inside and the picture attached shows the note that they left for me
son4ous [18]

Answer:

'∂' -- means a partial differential

'Δ' -- means a change in some variable.

'σ' --means 'sum' and 'deviation'.

The text says something about the world turning so maybe the equation has something to do with that? Maybe it is the equation for the earth's rotation. Sorry I can't find anything else, but I hope this helps a bit!

6 0
3 years ago
How do you completely factor 2^2-9
Maurinko [17]
Step 1. Simplify 2^{2} to 4

4-9

Step 2. <span>Simplify

</span>-5
<span>
Done! Your answer is </span>-5
5 0
3 years ago
A horse galloped at a rate of 42 mph at this rate what is the closest to the number of meters that the horse for travel in a sec
a_sh-v [17]
Convert miles/hour to meters/second: 42mi/hr(0.447) = 18.77m/sec
6 0
3 years ago
8*11=(8*10)+(1*10) is the equation true
svet-max [94.6K]

Answer:

no

Step-by-step explanation:

8*10=80, 1*10=10

80+10=90

8*11=88

88 does not equal 90 so no

5 0
3 years ago
Read 2 more answers
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