C + a = 140......a = 140 - c
5.3c + 9.4a = 1086.4

5.3c + 9.4(140 - c) = 1086.4
5.3c + 1316 - 9.4c = 1086.4
5.3c - 9.4c = 1086.4 - 1316
-4.1c = - 229.6
c = -229.6 / -4.1
c = 56......so their were 56 child tickets sold

5 0

2 years ago

Read 2 more answers

Find the real numbers x and y.<br> 27+yi= 11-x + 4i

Korvikt [17]

$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\qquad \tt \rightarrow \:x = -16$

$\qquad \tt \rightarrow \: y =4$

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$\large \tt Solution \: :$

$\qquad \tt \rightarrow \: 27 + yi = 11 - x + 4i$

$\qquad \tt \rightarrow \: yi + x = 11 + 4i - 27$

$\qquad \tt \rightarrow \: x + yi = - 16 + 4i$

By equating both equations we get :

$\qquad \tt \rightarrow \: x = - 16$

$\qquad \tt \rightarrow \: y = 4$

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

8 0

1 year ago

Find the domain for y=5x determine if it's a function

Ira Lisetskai [31]

Answer:

Domain: X is an element of real number

It is a function

Step-by-step explanation:

x is an element of all real numbers

y=5x has a one to one relation. It is a function

4 0

2 years ago