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4 years ago

13

1. What is the simplified form of the following expression? 12x

1 answer:

eimsori [14]4 years ago

3 0

12x² - 3.5y + 10y + 1.5x² + y Combine like terms

13.5x² + 7.5y

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A number plus twice the number is equal to three times the number

Lina20 [59]

a+2a=3a
3a=3a
The answer is infinetly many solutions.

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3 years ago

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Visitors to a carnival can buy an unlimited-ride pass for 50$ or an entrance-only pass for 20$. In one day, 282 passss were sold

olchik [2.2K]

20*282= 5640
10680-5640=5040
50-20=30
5040 dividend by 30= 168
Answer: 168

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3 years ago

Someone help me please and thank you!! ASAP :(

pantera1 [17]

<h3>Answer: Choice D) </h3>

Work Shown:

$(f+g)(x) = f(x)+g(x)\\\\(f+g)(x) = \frac{x-23}{x^2+9x-36}+\frac{1}{x+12}\\\\(f+g)(x) = \frac{x-23}{(x+12)(x-3)}+\frac{1(x-3)}{(x+12)(x-3)}\\\\(f+g)(x) = \frac{x-23+1(x-3)}{(x+12)(x-3)}\\\\(f+g)(x) = \frac{x-23+x-3}{x^2+9x-36}\\\\(f+g)(x) = \frac{2x-26}{x^2+9x-36}\\\\$

We must require that $x \ne -12$ and $x \ne 3$ to avoid having 0 in the denominator. This is why choice D is the answer.

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3 years ago

Julie is a math tutor. She charges each student $210 for the first 7 hours of tutoring and $20 for each additional hour.

Maksim231197 [3]

She spent 17 hours tutoring

$210 = 7 hours

$20 x 10 hours = $200

$210 + $200 = $410
7 Hours + 10 Hours = 17 Hours

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3 years ago

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Expand: In (4a)^3<br> help please

Gala2k [10]

Answer: 3ln4 + 3lna

Step-by-step explanation:

$\ln (4a)^{3}\\=3 \ln 4a\\=3(\ln 4+\ln a)\\=\boxed{3\ln 4+3\ln a}$

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2 years ago