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Mazyrski [523]
3 years ago
13

In the standard (x, y) coordinate plane, what is the y-intercept of the line given by the equation

t/?f=3x%2B5y%20%3D%208" id="TexFormula1" title="3x+5y = 8" alt="3x+5y = 8" align="absmiddle" class="latex-formula">?
Mathematics
1 answer:
Agata [3.3K]3 years ago
6 0
<span>the y-intercept will be \frac{8}{5}

</span>the standard line equation is y = mx + b, where y is the y point, x is the x point, m is the slope, and b is the y-intercept.

to get the y intercept, we need to transform  into the line equation, and caculate out b.

3x + 5y = 8
so 5y = 8 -3x
then y = <span>\frac{8}{5} - <span>\frac{3}{5}x
which  means that <span>\frac{8}{5} = the y intercept.</span></span></span>
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How would I do the steps to solve this?
allsm [11]

Answer:

The maximum revenue is 16000 dollars (at p = 40)

Step-by-step explanation:

One way to find the maximum value is derivatives. The first derivative is used to find where the slope of function will be zero.

Given function is:

R(p) = -10p^2+800p

Taking derivative wrt p

\frac{d}{dp} (R(p) = \frac{d}{dp} (-10p^2+800p)\\R'(p) = -10 \frac{d}{dp} (p^2) +800 \ frac{d}{dp}(p)\\R'(p) = -10 (2p) +800(1)\\R'(p) = -20p+800\\

Now putting R'(p) = 0

-20p+800 = 0\\-20p = -800\\\frac{-20p}{-20} = \frac{-800}{-20}\\p = 40

As p is is positive and the second derivative is -20, the function will have maximum value at p = 40

Putting p=40 in function

R(40) = -10(40)^2 +800(40)\\= -10(1600) + 32000\\=-16000+32000\\=16000

The maximum revenue is 16000 dollars (at p = 40)

3 0
2 years ago
I NEED HELP ASAP!! BRAINLIEST TO BEST ANSWER!!!!!!!!!!!!!! The moving van traveled 455 miles in eight hours and 45 minutes what
AveGali [126]

Answer:

52 miles per hour

Step-by-step explanation:

455 miles in 8 hr 45 min =

455 miles in 8.75 hours

\frac{455 miles}{8.75 hours} = \frac{x}{1 hour}

8.75(x) = 455(1)

\frac{8.75(x)}{8.75} = \frac{455(1)}{8.75}

x = 52

3 0
3 years ago
What value does each equation need to be multiplied by in order to eliminate the y terms equation 1 6x-5y=-4 equation 2 4x+2y=28
Alex777 [14]
In order to eliminate the y term, you need to find what y is equal to in the equation.
1. 6x-5y=-4
-5y=-4-6x
Y=6/5x+4/5
You then sub in 6/5x+4/5 in for y in the equation
2. 4x+2y=28
2y=-4x+28
Y=-2x+14
Hope this helps!
5 0
3 years ago
In circle P, BC = 24 ft. What is the length of ABC
natulia [17]

Answer:

C) 22 pi

Step-by-step explanation:

Here the diameter of the circle = 24.

Therefore, radius of the circle = 24/2 = 12 ft

Here we have to use the formula to find the arc length.

Arc length = (central angle / 360) * 2*pi*r

Central angle ABC = 360 - 30 = 330 degrees and radius (r) = 12

Now plug in these values in the formula, we get

Arc length ABC = (330/360) *2*pi*12

Now we have to simplify it.

= 11/12 *2 *pi*12

= 11*2*pi

Arc length of ABC = 22pi

Therefore, the answer is C) 22 pi

Hope you will understand the concept.

Thank you.

3 0
3 years ago
The speed limit on a highway is 70 miles per hour. About how fast is this in miles per minute
jek_recluse [69]

Answer:

In the case of 70 mph, time would be 105/70 or 1.5 hours (90 minutes).

5 0
3 years ago
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