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3 years ago

12

jim pays $75 per month for his cell phone plan plus $0.30 per minute beyond the first 1000 minutes his bill was $105.60 last mon

th how many minutes did he use

1 answer:

cluponka [151]3 years ago

7 0

The answer to the question

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Nina has a job repairing sailboats. To repair a sailboat, she charges a flat fee of $100 plus $40 per hour. The total in dollars

vekshin1

Answer:

y=100+40x

Step-by-step explanation:

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3 years ago

A Wire is first bent into the shape of a triangle. Each side of the triangle is 12 inches long. Then the wire is unbent and resh

coldgirl [10]

Step-by-step explanation:

24•3= 72 72/4=18 each side of the square is 18 inches

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2 years ago

Use a unit rate to find the unknown value 16/32= /14

lesya [120]

Okay. So this is already set up as a proportion. Cross multiply the values in order to get 224 = 32x. Now, divide each side by 32 to isolate the variable. 224/32 is 7. x = 7. There. The unknown value is 7.

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2 years ago

Write each set in the indicated form. If you need to use "" to indicate a pattern, make sure to list at least four elements of t

KatRina [158]

Complete question is;

Write each set in the indicated form.

If you need to use "..." to indicate a pattern, make sure to list at least four elements of the set.

As you answer below, remember that the natural numbers are just the counting numbers. This means that is not a natural number, and negative numbers are not natural numbers either.

(a) Roster form: {6,8,10,12,...}

Descriptive form:

(b) Descriptive form: The set of natural numbers greater than or equal to 3 and less than or equal to 6.

Roster form:

Answer:

A) Descriptive form: A set of even natural numbers that are greater than or equal to 6.

B) Roster form: {3, 4, 5, 6}

Step-by-step explanation:

A) We are given that the roster form is;

{6,8,10,12,...}

Now, the descriptive form is just a statement that describes the given roster form.

Now, we can see they are all even natural numbers and the least is 6 while after 12,we can see that the set continues.

Thus;

Descriptive form: A set of even natural numbers that are greater than or equal to 6.

B) We are given that the descriptive form is the set of natural numbers greater than or equal to 3 and less than or equal to 6.

This means the least number in the set is 3 while the highest number is 6.

Thus,the roster form is;

Roster form: {3, 4, 5, 6}

3 0

3 years ago

A company sells widgets. The amount of profit, y, made by the company, is related to

tiny-mole [99]

Answer:

In order to make the maximum profit, the company should sell each widget at (the currency isn't given, so I'll be assuming USD) $36.

Step-by-step explanation:

The amount of profit <em>y</em> made by the company from selling each widget at <em>x</em> price is modeled by the equation:

$y=-x^2+72x-458$

Since this is a quadratic with a negative leading coefficient, its maximum will occur at its vertex point. We want to find the price that the widget should be sold to make the maximum profit. So, we want to find the <em>x-</em>coordinate of the vertex. This is given by the formula:

$\displaystyle x=-\frac{b}{2a}$

In this case, <em>a</em> = -1, <em>b</em> = 72, and <em>c</em> = -458. Substitute and evaluate:

$\displaystyle x=-\frac{72}{2(-1)}=36$

In order to make the maximum profit, the company should sell each widget at (the currency isn't given, so I'll be assuming USD) $36.

5 0

2 years ago