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3 years ago

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Janie has $3. She earns $1.20 for each chore she does and can do fractions of chores. She wants to earn enough money to buy a CD

for $13.50. Write an inequality to determine the number of chores, c, Janie could do to have enough money to buy the CD.

2 answers:

3241004551 [841]3 years ago

8 0

The answer is 8or9 that is the best answer

Maurinko [17]3 years ago

7 0

Answer:

3+1.2c≥13.50

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Line v passes through points (1, 12) and (10, 7). Line w is perpendicular to v. What is the slope of line w?

Firlakuza [10]

Line v passes through points (1, 12) and (10, 7). The slope of line w as improper fraction is $\frac{9}{5}$

<u>Solution:</u>

Given, two points are (1, 12) and (10, 7)

We have to find the slope of a line that is perpendicular to line passing through the above given two points.

Slope of a line that pass through $\left(x_{1}, y_{1}\right) \text { and }\left(x_{2}, y_{2}\right)$ is given as:

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$\text { Here, in our problem, } x_{1}=1, y_{1}=12 \text { and } x_{2}=10, y_{2}=7$

$\text { slope } m=\frac{7-12}{10-1}=\frac{-5}{9}$

So, slope of line v is $\frac{-5}{9}$

Since<em> </em>line w is perpendicular to v,<em> the product of their slopes equals -1</em>

$\text { slope line } v \times \text { slope of line } w=-1$

$\frac{-5}{9} \times \text { slope of line } w=-1$

$\text { Slope of line } w=\frac{9}{-5} \times(-1)=\frac{9}{5}$

Hence, the slope of line w as improper fraction is $\frac{9}{5}$

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3 years ago

Z = -400i - 44.5<br> What is the imaginary part of z?

hjlf

Answer:

-400i

General Formulas and Concepts:

<u>Algebra II</u>

Complex Form: a + bi

Step-by-step explanation:

<u>Step 1: Define</u>

z = -400i - 44.5

<u>Step 2: Identify</u>

Treat imaginary <em>i</em> as a variable. The imaginary part of z would be the entire term of <em>i</em>. Therefore, our answer is -400i

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Yes
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