Please help me find the correct answer to 1&2

Mathematics

1 answer:

Yuliya22 [10]3 years ago

6 0

U have it right I. think 2 might be w little off

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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 - 1.57a (rounded to hundredths)
Plug c into second equation.

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 = 68.18
round up to ones: 68

 $\boxed {68~adult~tickets}$ were sold.

8 0

3 years ago

Graph the inequality. 2x+5y> -15

Sedbober [7]

Answer: See attached

Step-by-step explanation:

[] Since the inequality uses greater than (>) and not greater than or equal to (≥), the line will be dashed.

[] The inequality is greater than (>) so we will shade above the line as values "above" are greater.