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Papessa [141]
3 years ago
15

Help please! I don't understand what to do.

Mathematics
2 answers:
seropon [69]3 years ago
7 0

Answer:

y = -4x + 2

Step-by-step explanation:

The equation of a line is written in y = mx + b form, where m is the slope and when finding the slope, it is relatively easy finding the y - intercept. To find the slope of a line perpendicular to a line that you already know the slope of, the slope of a perpendicular line is the negative reciprocal. The negative reciprocal of the slope of y = 1/4 x + 5 is -4, which is the slope of the line we are trying to find. Since we have our slope, we can rewrite our equation as y = -4x + b. Now since we already have a point that it passes through, we have our y-intercept. Our y - intercept is the y coordinate when the x coordinate is 0. Since we have our point (0, 2) we have our y - intercept, which is two. Thus, our answer is y = -4x + 2.

Tanya [424]3 years ago
4 0

Answer:

y = -4x + 2

Step-by-step explanation:

Well first we have the equation y = 1/4x + 5.

And we have to find the line that is perpendicular to that line that also passes through the point (0,2) so first we have to graph it. Look at the image below.

So we have to find a line that is perpendicular meaning it crosses y = 1/4x + 5 and makes 4 90° angles.

So to start off we know that 2 is the y intercept.

so our equation looks like this y = ?x + 2

We can keep trying x values till we get it.

But we do know that the x value has to be negative.

So the equation is y = -4x +2. Look at the other image below.

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consider a wire 2 ft long cut into two pieces. one piece forms a circle with radius r and the other forms a square with side len
makkiz [27]

The formula for the radius r in terms of x . and for the maximum areas is x=2/\pi+4

Given that,

y forms a circle of radius r

y=2\pir

r=y/2\pi

(2-y)- forms Square Side x

(2-y) = 4x

x=(2-y)/4

Now Sum of Area's=Area of Square +Area of Circle

Sum = \pir² + x²

Substitute the r and x values in above equation,

A(y)= y²/4\pi+(y-2)²/ 16

To maximize Area A(y)

A'(y)= 0

2y/4\pi + 2(y-2)/16 =0

y/2\pi + (y-2)/8 =0

y = 2\pi/\pi+4

Y max will be max, x to be maximum.

for maximum sum of areas,

x=2/\pi+4

Hence,The formula for the radius r in terms of x . and for the maximum areas is x=2/\pi+4

Learn more about Area :

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4 0
1 year ago
Please help me with this math problem.
Naya [18.7K]

Answer: you got this

Step-by-step explanation:

8 0
2 years ago
Claire tried to evaluate 30x8 step by step
Sophie [7]
30x8
8x0=0
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6 0
2 years ago
Need help for #9 please
Ierofanga [76]
Ok as sqrt(x^6 + 5) approaches infinity it goes to x^3
Same with the denominator because x^3 is the highest power

On the bottom, the factor on x^3 is 4 so on the top to make the limit evaluate to 1/3, a has to be 16/9 so then when you neglect all of the other powers besides the highest, it goes to 4/3 because you take the square root and then it simplifies to 1/3
5 0
3 years ago
Read 2 more answers
Garry's and Jane play a trivia game.Gary score is -17 and Jane score is -24.What is the difference between Garry's score and Jan
valkas [14]

Answer:

7

Step-by-step explanation:

difference between two number let say x&y is x-y

so, difference between their score is (-17)-(-24)

=(-17)+24 {minus of minus is plus}

=24-17

=7

5 0
3 years ago
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