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Tatiana [17]
3 years ago
7

Corinna has $88. She wants to buy a $275 plane ticket. She will save up her earnings from working at the museum where she earns

$17 per hour. Which inequality shows the number of hours, n, Corinna must work so that she has a total of at least $275?
Mathematics
1 answer:
m_a_m_a [10]3 years ago
8 0

Answer:

275 = 17x + 88 \\ - 88 = 17x - 88 \\ 187 = 17x \\ 187 \div 17 \\ x = 11 \: hours

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Step-by-step explanation:

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The time a projectile spends in the air can be modeled by the equation t² -t - 8 = 0, in which t represents the amount of time t
s2008m [1.1K]

Answer:

(t - 4)(t + 2) = 0  

Step-by-step explanation:

The general formula for a quadratic expression is

y = ax² + bx + c

Your expression is

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a = 1; b = -2; c = -8

1. Find two numbers that multiply to give ac and add to give b.

In this case, find two numbers that multiply to give -8 and add to give -2.

It helps to list the factors of  -8.

They are ±1, ±2, ±4, and ±8

After a little trial and error, you should find the numbers -4 and +2.

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2. Rewrite the middle term with those numbers

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3. Factor the first and last pairs of terms separately

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4. Separate the common factor

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8 0
3 years ago
If <img src="https://tex.z-dn.net/?f=f%28x%29%3Dx%5E2-2" id="TexFormula1" title="f(x)=x^2-2" alt="f(x)=x^2-2" align="absmiddle"
jek_recluse [69]

Answer:

\boxed{f(6) = 34}

Step-by-step explanation:

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Now, because we are composing the functions, this value we have solved for now replaces the x-values in the f(x) function. So, f(x) becomes f(6), and we use the same manner as above to simplify.

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Therefore, when we compose the functions, our final answer is \bold{f(6) = 34}.

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