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2 years ago

A local Pennysaver charges $11 for each of the first three lines of a classified ad, and $5 for each

Mathematics

2 answers:

krok68 [10]2 years ago

6 0

What’s the question?

choli [55]2 years ago

5 0

Step-by-step explanation:

a) $11 = 3 lines of a classified ad

$x = 2 limes of a classified ad

cross multiply

3x = 22

divide by the coefficient of x

which is 3

3x/3 = 22/3

x = 7.33 approximately 7

x = 7.

b) $11 = 3 lines of a classified ad

$x = 5 lines of a classified ad

cross multiply

3x = 55

diviee by the coefficient of x

which is 3

3x/3 = 55/3

x =18.33 approximately 18

x =18.

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sergiy2304 [10]

Answer: 65000$ worth of things

This is edited, because I got it backwards last time.

We need to make 2500, but she only makes 4% of whatever she sells.

That means the equation is

2500 = 0.04x

Now, we just need to divide both sides by 0.04 and we get 65000.

Sorry for the confusion.

7 0

2 years ago

What integer is closets to 31/7

baherus [9]

31/7 = 4 3/7.....3/7 is less then 1/2....so the closest integer is 4

6 0

3 years ago

Read 2 more answers

I need help please, i dont understand

jenyasd209 [6]

9514 1404 393

Answer:

(a) none of the above

Step-by-step explanation:

The largest exponent in the function shown is 2. That makes it a 2nd-degree function, also called a quadratic function. The graph of such a function is a parabola -- a U-shaped curve.

The coefficient of the highest-degree term is the "leading coefficient." In this case, that is the coefficient of the x² term, which is 1. When the leading coefficient of an even-degree function is positive, the U curve has its open end at the top of the graph. We say it "opens upward." (When the leading coefficient is negative, the curve opens downward.)

This means the bottom of the U is the minimum value the function has. For a quadratic in the form ax²+bx+c, the horizontal location of the minimum on the graph is at x=-b/(2a). This extreme point on the curve is called the "vertex."

This function has a=1, b=1, and c=3. The minimum of the function is where ...

x = -b/(2·a) = -1/(2·1) = -1/2

This value is not listed among the answer choices, so the correct choice for this function is ...

none of the above

The attached graph of the function confirms that the minimum is located at x=-1/2

_____

<em>Additional comment</em>

When you're studying quadratic functions, there are few formulas that you might want to keep handy. The formula for the location of the vertex is one of them.