All categories

3 years ago

Will BRAINLY! I need help with this proof.

Mathematics

1 answer:

vlada-n [284]3 years ago

6 0

What are you trying to find? I’m completely lost

You might be interested in

Find the x-intercepts (solve for x) for the following AND PLEASE SHOW YOUR WORK!

alekssr [168]

Answer:

hope it may help but I wasnt able to find y cause no question

4 0

3 years ago

Please help me please will give brainliest

Goshia [24]

It’s C
have an awesome day:)

3 0

3 years ago

Josh is on a road trip returning home from vacation. The graph below showst shows distance remaining at various times on the tri

zheka24 [161]

Answer:

Part a) $y=-40x+160$

Part b) see the explanation

Part c) $40\ \frac{miles}{hour}$

Step-by-step explanation:

The picture of the question in the attached figure

Let

x ----> the time in hours

y ----> the number of miles from Josh's home

Part a) What is the equation of the line, written in slope-intercept form?

step 1

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

take the intercepts points

(0.160) and (4,0)

substitute

$m=\frac{0-160}{4-0}$

$m=\frac{-160}{4}=-40$

The negative slope means that the function is decreasing

step 2

Find the equation of the line

$y=mx+b$

we have

$m=-40\\b=160$

$y=-40x+160$

Part b) Based on the linear model, predict how far Josh is away from home when he starts?

we know that

The y-intercept is the value of y when the value of x is equal to zero

Looking at the graph

For x=0

y=160 miles

therefore

When Josh starts, he's 160 miles away from his house.

Part c) Approximately how fast is he traveling on his trip?

Remember that the speed is equal to divide the distance by the time

In this problem, the slope of the linear equation is the same that the speed

$40\ \frac{miles}{hour}$

6 0

3 years ago

What types of solutions will a quadratic equation have when the discriminant b2 − 4ac in the quadratic formula is a perfect squa

netineya [11]

<em>The discriminant must be zero.</em>

Step-by-step explanation:

A Perfect-Square Trinomial is given by the form:

$(\alpha x \pm \beta)^2=(\alpha^2x^2 \pm 2\alpha x \beta + \beta^2)$

The discriminant in the quadratic formula is:

$\Delta=b^2-4ac \\ \\ \\ Here: \\ \\ a= \alpha^2 \\ \\ b=2\alpha \beta \\ \\ c=\beta^2 \\ \\ \\ So: \\ \\ \Delta=(2\alpha \beta )^2-4(\alpha^2)(\beta^2) \\ \\ \Delta=4\alpha^2 \beta^2-4\alpha^2 \beta^2=0$

So in order to get a perfect square,<em> the discriminant must be zero.</em>

<h2>Learn more:</h2>

Discriminant: brainly.com/question/1537997

#LearnWithBrainly

4 0

4 years ago

PLEASE HELP WITH THE QUESTION BELOW ASAP!! THANKS SO MUCH!

Morgarella [4.7K]

Answer:

y=-1/4x-4

Step-by-step explanation:

it simple rise over run: -1 go down one over 4 right or the other way around go up 1 and left 4 either way would work your y intercept is -4 because that is the point crossing the y-axis hope i helped!

7 0

3 years ago

Read 2 more answers