3 years ago

ANS ASAP... will mark him/her as BRAINLIEST The 1rst one!!

Mathematics

1 answer:

prisoha [69]3 years ago

6 0

7x - 14 = 4x + 19

7x - 4x = 14 + 19

3x = 33

x = 11

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Tickets to a school play cost $2 if bought in advance, and $3 if bought at the door. By selling all 400 of their tickets, $1030

Vitek1552 [10]

Answer:

230 were sold at the door

170 were sold in advance

Step-by-step explanation:

*i dont know if this is the proper way to do it but it has the correct answer

x=at door y=in advance

x+y=400

3x+2y=1030

y=-x+400

2y=-3x+1030

y=-3/2x+515

-x+400=-3/2x+515

x=230 y=170

4 0

3 years ago

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Elan Coil [88]

The answer to this question is:

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3 years ago

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Andre45 [30]

Answer:

$a = \frac{1}{134217728}$

Step-by-step explanation:

Given

$8^x = a^{-x/9}$

Required

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Apply law of logarithm

$x\ log(8) = (-x/9) log(a)$

Divide both sides by a

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Multiply both sides by -9

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Apply law of logarithm

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Cancel out log

$8^{-9} = a$

Rewrite as:

$a = 8^{-9}$

Apply law of indices

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3 years ago

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gregori [183]

Answer:

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Step-by-step explanation:

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3 years ago

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solmaris [256]

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Then multiply both by three to get
(-3,6)

7 0

3 years ago