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guapka [62]
3 years ago
15

Beatrice started babysitting when she was in high school. She has built a reputation for herself and has become popular among th

e neighborhood parents. Beatrice charges $10/h and gets a $5 automatic tip. Beatrice needs $100 to buy a present for her mother. She wants to find out the minimum number of hours she needs to babysit at one job to get the money she needs.
(a) Write an inequality and solve it to help Beatrice figure out the minimum number of hours. Identify what the variable is and what it represents. Show your work. Justify each step in the solution.
(b) Graph the solution on a number line.
(c) Beatrice doesn’t charge for partial hours. What is the minimum number of hours that she needs to work at one job to make at least $100? Round your answer to the nearest hour. Justify your answer.
Mathematics
1 answer:
tester [92]3 years ago
3 0
6.6 hours to get 100 dollars because 15 goes into 100 6.6 times 

hope that helps

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Hi, There!

Answer:

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I hope it helps!!

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tester [92]

Answer:

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2 years ago
Need step by step detailed answer
kolezko [41]

Answer:

y = -4x - 4

Step-by-step explanation:

If we have two lines in slope intercept form as

y = m_1x + c_1 \text{ and}\\y = m_2x + c_2\\

then the product of the slopes m_1m_2 = -1

In other words, m_2 = -\frac{1}{m_1}

We have the first line as

y = \frac{1}{4}x + 5\\\\

The slope of this line is \frac{1}{4}

The slope of a perpendicular line will be the negative of the reciprocal of this line

Reciprocal of 1/4 is 4

So slope of perpendicular line is -4 which implies

y = -4x + c

We have to determine c

Since the line passes through (-3, 8), plug in these values for x and y in the equation and solve for c

8 = (-4)(-3) + c

8 = 12 + c

c = -4

So the equation of the perpendicular line is y = -4x - 4 (Answer)

It is always a good idea to plot these graphs and see if they fit the data provided

The attached plot shows the two graphs and you can see they are perpendicular to each other and the perpendicular line(the answer) passes through point (-3,8)

4 0
2 years ago
Find x. Perimeter.<br><br> What is the value of x?<br><br> What is the perimeter of this triangle?
gladu [14]

Step-by-step explanation:

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that means the distance to the touching points from the bottom left vertex is 7-4 = 3.

and that means that the distance to the touching points from the bottom right vertex is 16-3 = 13.

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and the perimeter of the triangle is therefore

7 + 16 + (13 + 4) = 40

7 0
2 years ago
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