Mathematics, 06.01.2021 22:00, landonp101

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

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answered: 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!

answered: Guest

i need a picture

step-by-step explanation:

answered: Guest

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest

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