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Nimfa-mama [501]
3 years ago
5

I NEED HELP WITH THIS PLEASE HELP ME

Mathematics
1 answer:
vekshin13 years ago
3 0

Answer:

156 minutes

Step-by-step explanation:

So we need to create an equation to represent how Frank's phone company bills him

  • I will denote "y" as the total for his bill
  • I will denote "x" as the number of minutes Frank uses

So the phone company charges an $8 monthly fee, so this value remains constant and will be our "y-intercept"

They then charge $0.06 for every minute he talks, this will be our "slope"

Combining everything into an equation, we have: y = 0.06x + 8

Now since we were given Franks phone bill total and want to figure out how many minutes he used, we just need to solve the equation for x and plug in our known y value

  • y = 0.06x + 8 → y - 8 = 0.06x → x=\frac{y-8}{0.06}
  • Then plugging in our y value we get x=\frac{17.36-8}{0.06}=\frac{9.36}{0.06}= 156

Frank used up a total of 156 minutes

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What is the distance between the points 4,10 and -3,-14 on the coordinate plane
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Answer:

25

Step-by-step explanation:

Here we are supposed to find the distance between two coordinates ( 4,10) and (-3,-14).

Let us do this step by step with detailed explanation.

We will use distance formula in order to find the distance between them. The distance formula is given as

D=\sqrt{(x_{2}-x_{1})^{2} +(y_{2}-y_{1})^{2} }

Here we have

x_{2}=-3\\x_{1}=4\\y_{2}=-14\\y_{1}=10\\

Replacing them in the formula we get

D=\sqrt{(-3-4)^{2} +(-14-10)^{2} }\\D=\sqrt{(-7)^{2} +(-24)^{2} }\\D=\sqrt{49+ 576 }\\D=\sqrt{625 }\\D=25\\

Hence our distance is 25 units

8 0
3 years ago
Create a dot plot of the data shown below. 20, 21, 21, 25, 20, 23, 27, 23, 24, 25, 26, 24, 23, 22, 24 Which measure of center wo
Dvinal [7]
The mean would be best, because the data distribution is nearly symmetrical
6 0
3 years ago
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For a given input value x, the function f outputs a value y to satisfy the following equation.
olasank [31]
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3 years ago
Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.
barxatty [35]

Answer:

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Explanation:

we have been given with the quadratic equation x^2-8x-9

we compare the given quadratic equation with general quadratic equation

general quadratic is ax^2+bx+c=0

from given quadratic equation a=1,b= -8,c= -9

substituting these values in the formula for discriminant D=b^{2}-4ac

D=(-8)^2-4(1)(-9)=100

Now, to find the value of x

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Now, substituting the values we will get

x=\frac{-(-8)\pm\sqrt{100}} {2}= \frac{8\pm10}{2}=9,-1

And rewritting the given equation by  shifting 9 to right hand side of the given equation and taking minus inside the bracket so as to convert it in the form of

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4 0
3 years ago
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Find the measure of angle A.<br> A<br> 7x-1<br> 12x<br> 489
Degger [83]

Answer:

48 degrees

Step-by-step explanation:

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19x=133

x=7

7(7)-1=A

49-1=A

48=A

A is 48 degrees

7 0
3 years ago
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