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LiRa [457]
3 years ago
14

Tony’s class needs more than $500 for the school dance. So far, they have raised $200. They plan to have a car wash, charging $8

a car, to raise more money. Tony solved the inequality 8x + 200 ≥ 500, and determined that if they wash 37 cars, they will have enough money. Is he correct? Explain.
Mathematics
2 answers:
pochemuha3 years ago
6 0

No, Tony is not correct. Solving the inequality tells us that x is greater than or equal to 37.5. Since the class must wash a whole number of cars, they need to wash at least 38 cars.

irina1246 [14]3 years ago
3 0
No $8 per car and they need $300 he needs to watch 38 cars 300/8=37.5 round that to a hole number so 38 cars
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Answer:

1/5

Step-by-step explanation:

5^{-x} = 25 so  x = -2 because 5^{2} = 25

if x = -2 then plug in: 5^1/2(-2)  =  5^-1  = 1/5

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A town's population has been growing linearly. In 2003 the population was 47,000. The population has been growing by 1200 people
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Answer:

Step-by-step explanation:

The population in 2003= 47000

Since the population increase by 1200 every year,

in 2004 the population will be 47000+1200

in 2005 the population will be 47000+(1200+1200) which is the same as

47000+2(1200) where 2 is 2 years after 2003,

Therefore the population x years after 2003 is 47000+x(1200).

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The population at 2009 is 54200,

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3 years ago
What is the additive inverse of -2 + 8i?
tatuchka [14]

Answer:

2 - 8i

Step-by-step explanation:

The additive inverse of something is basically the opposite of it. Another way to say this is that when you add the additive inverse to -2 + 8i, it will equal 0.

<u>An example:</u>

The additive inverse of 7 is -7 because not only is it the opposite, but also when you add 7 and -7, it equals 0.

<u>To solve</u>

So all you need to do is find the opposite of -2 + 8i. You can write it as:

-(-2 + 8i)  With the negative in the front because we want to find the opposite.

This then equals:

2 - 8i

You can check your answer by adding -2 + 8i and 2 - 8i to see if it equals 0:

(-2 + 8i) + (2 - 8i)  →  and it does equal 0

<u>ANSWER:</u> 2 - 8i

Hope you understand and that this helps with your question! :)

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alexgriva [62]
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Answer: 5 tens

Hope This Helps!!!
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3 years ago
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