2 years ago

Please please please someone help me

Mathematics

2 answers:

Lisa [10]2 years ago

8 0

Answer:

x=15

Step-by-step explanation:

Substutting in q(x) makes 3=4/5x-9

Add 9 to both sides to get 12=4/5x

Divide both sides by 4/5 and get 15=x

Thus, x=15

Zolol [24]2 years ago

7 0

Answer:

Step-by-step explanation:

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Paladinen [302]

Answer:

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Step-by-step explanation:

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2 years ago

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

Marrrta [24]

Answer:

170 tickets.

Step-by-step explanation:

Write formulas for the question.

$N_2+N_3=400$

$2N_2+3N_3=1030$

Then use substitution.

$N_2=-N_3+400$

$2(-N_3+400)+3N_3=1030$

$-2N_3+800+3N_3=1030$

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So number of $3 tickets sold is 230. But they ask for the tickets bought in advance (i.e. the tickets sold for $2). Use substitution again.

$N_2+230=400\\N_2=400-230\\N_2=170$

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2 years ago

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barxatty [35]

Answer:

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Step-by-step explanation:

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2 years ago

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Please explain how and give the answer!

nadezda [96]

The mass of b equals the mass of d so
24(10-x)=6(x+15)
240-24x=6x+90
30x=150
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2 exponent 5 + 4 • 4 =

mixer [17]

Answer:

36?

Step-by-step explanation:

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