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Rom4ik [11]
3 years ago
9

Please help 20points

Mathematics
2 answers:
mafiozo [28]3 years ago
4 0

Answer: the first one is 720. The second one is 72

Step-by-step explanation:

Sindrei [870]3 years ago
4 0
80% of 900 is 720

18 is 25% of 72
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How many solutions does the following equation have? 7(y+3)=5y+8
Sedaia [141]

Answer:

Alright well solve for y by simplifying both sides of the equation then isolating the variable

Exact form: y = - 13/2

Decimal form: y = - 6.5 Hope this helps have a nice day :)

Step-by-step explanation:


6 0
3 years ago
20 point help.brainliest will be mark
Anon25 [30]
The first one is correct except add d
7 0
3 years ago
Read 2 more answers
12x - 16 = 68<br> Solve for x
cricket20 [7]

Answer:

x = 7

Step-by-step explanation:

12x - 16 = 68

Add 16 to each side

12x - 16+16 = 68+16

12x =84

Divide by 12

12x/12 = 84/12

x = 7

6 0
3 years ago
Read 2 more answers
Also they have positive 1.25
aleksley [76]
-1.25............................
6 0
3 years ago
At the movie theatre, child admission is $6.30 and adult admission is $9.90 . On Monday, 159 tickets were sold for a total sales
frez [133]
C = child tickets
a = adult tickets

Solve this with the substitution method.
Make two equations:

6.30c + 9.90a = 1,246.50
c + a = 159

Solve for c.
Subtract 9.90a from both sides.

6.30c = 1,246.50 - 9.90a
Divide both sides by 6.30.

c = 197.86 - <span>1.57a (rounded to hundredths)
Plug c into second equation.

</span>197.86 - 1.57a + a = 159
Combine like terms.

197.86 - 0.57a = 159
Subtract 197.86 from both sides.

-0.57a = -38.86
Divide both sides by -0.57.

a = <span>68.18
round up to ones: 68

</span>\boxed {68~adult~tickets} were sold.<span>
</span>
8 0
3 years ago
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