Mathematics, 06.01.2021 22:00 landonp101

Hello! Please help me with this question. I’ll mark Thank you :)

Answers: 3

Show answers

Answers

Answer from: rogersdeloris1ovgm3b

$\Huge\boxed{\$ 12.12}$

Step-by-step explanation:

In order to find how much credit is left after 92 minutes, we need to

1. Figure out the equation that describes this graph (since we don't know the y-intercept)

2. Find the credit remaining after 92 minutes using the equation formed.

Figuring out the equation of this graph:

First things first is to figure out the slope of this graph. Since this is a linear function, the slope will remain constant, and we can note something about slope here.

The slope of a line will be it's change in x divided by its change in y, often referred to with a formula.

$\frac{\Delta y}{\Delta x}$

Since we know two points on this graph, we can find the changes in the x and y then divide for the slope.

Since minutes used is the x, and credit left is the y, we have two points.

(41, 19.26) and (68, 15.48).

The change in y is -3.78, as 19.26-15.48=3.87

, and we decreased, so -3.78.The change in x is 27 as 68-41=27

, and we increased.

The slope will then be $\frac{-3.78}{27}$ which comes out to be -0.14.

Now that we know the slope, that means our equation will look something like y = -0.14x+b - however, we still have b to solve for!

To solve for it, we can substitute one of our points in - let's do (41, 19.26) - to the equation and solve for b.

$19.26 =-0.14 \cdot 41 +b$ 19.26 = -5.74+ b

Now that we know that b = 25, we can plug it into our equation, making the final equation that represents this scenario

y = -0.14x+25

Solving for 92 minutes

Now that we know the equation to our graph, we can substitute in 92 minutes as the x value to find our y value (credit left).

$y = -0.14 \cdot 92 + 25$ y = -12.88+25

Therefore, after 92 minutes, the amount of credit left is $12.12

Hope this helped!

Answer from: Quest

the system of inequity is

$y\leq -x+4$

$3y> x$

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

the solid line passing through the points (0,4) and (4,0).

$y-4=\frac{0-4}{4-0}(x-0)$

$y=-x+4$

the related equation of solid line is $y=-x+4$ .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

$y-0=\frac{0-1}{3-0}(x-0)$

$3y=x$

the related equation of dashed line is $3y=x$

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

$1=-0+4$

$1=4$

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be $\leq$ . the required inequality is

$y\leq -x+4$

similarly, check the second related equation.

$3(1)=0$

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

$3y> x$

15 points write a system of inequalities to represent the shaded portion of the graph

Answer from: Quest

answer: i dont know but if you try hard you will get it right : )

step-by-step explanation:

Another question on Mathematics

Mathematics, 21.06.2019 13:30

Fred has a total of 62 dvd and cd. if the number of cd is three more than two times the number of dvd, how many cd does he have?

Answers: 2

Answer

Mathematics, 21.06.2019 20:20

Select the correct answer from each drop-down menu. the length of a rectangle is 5 inches more than its width. the area of the rectangle is 50 square inches. the quadratic equation that represents this situation is the length of the rectangle is inches.

Answers: 1

Answer

Mathematics, 21.06.2019 21:50

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality

Answers: 3

Answer

Mathematics, 22.06.2019 00:30

Given abc find the values of x and y. in your final answer, include all of your calculations.

Answers: 1

Answer

You know the right answer?

Hello! Please help me with this question. I’ll mark Thank you :)
...

Questions