1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Evgen [1.6K]
2 years ago
10

Need help with this explain

Mathematics
2 answers:
konstantin123 [22]2 years ago
5 0
12,500 divide 1999, 12,500 divide 1998, etc hope this helps
Savatey [412]2 years ago
4 0
  For 1999 it would be 10625$

To calculate % decrease do, 100% - 15% = 85%
             then; 85% divide 100 = 0.85 

    0.85 * 12500 (original price) = 10625$
You might be interested in
Determine whether each point appears on the line with the given slope and y−intercept. Select Yes or No for each point.
-Dominant- [34]
Could you put a graph plz??
6 0
3 years ago
Read 2 more answers
The regression equation y = -0.414x + 106.55 approximates the percent of people in an
murzikaleks [220]

The correct option will be:   A. 67%

<em><u>Explanation</u></em>

Given equation is:   y = -0.414x + 106.55 , where x is the length of the film in minutes and y is the percentage of people finish watching the film.

Here, the length of the documentary is given as 95 minutes. So, we will <u>plug x=95 into the above equation</u> and get....

y=-0.414(95)+106.55\\ \\ y=-39.33+106.55\\ \\ y=67.22 \approx 67

<em>(Rounded to the nearest percent)</em>

So, the percentage of people in an audience who will finish watching a documentary that is 95 minutes long will be 67%

4 0
3 years ago
1.) Find the length of the arc of the graph x^4 = y^6 from x = 1 to x = 8.
xxTIMURxx [149]

First, rewrite the equation so that <em>y</em> is a function of <em>x</em> :

x^4 = y^6 \implies \left(x^4\right)^{1/6} = \left(y^6\right)^{1/6} \implies x^{4/6} = y^{6/6} \implies y = x^{2/3}

(If you were to plot the actual curve, you would have both y=x^{2/3} and y=-x^{2/3}, but one curve is a reflection of the other, so the arc length for 1 ≤ <em>x</em> ≤ 8 would be the same on both curves. It doesn't matter which "half-curve" you choose to work with.)

The arc length is then given by the definite integral,

\displaystyle \int_1^8 \sqrt{1 + \left(\frac{\mathrm dy}{\mathrm dx}\right)^2}\,\mathrm dx

We have

y = x^{2/3} \implies \dfrac{\mathrm dy}{\mathrm dx} = \dfrac23x^{-1/3} \implies \left(\dfrac{\mathrm dy}{\mathrm dx}\right)^2 = \dfrac49x^{-2/3}

Then in the integral,

\displaystyle \int_1^8 \sqrt{1 + \frac49x^{-2/3}}\,\mathrm dx = \int_1^8 \sqrt{\frac49x^{-2/3}}\sqrt{\frac94x^{2/3}+1}\,\mathrm dx = \int_1^8 \frac23x^{-1/3} \sqrt{\frac94x^{2/3}+1}\,\mathrm dx

Substitute

u = \dfrac94x^{2/3}+1 \text{ and } \mathrm du = \dfrac{18}{12}x^{-1/3}\,\mathrm dx = \dfrac32x^{-1/3}\,\mathrm dx

This transforms the integral to

\displaystyle \frac49 \int_{13/4}^{10} \sqrt{u}\,\mathrm du

and computing it is trivial:

\displaystyle \frac49 \int_{13/4}^{10} u^{1/2} \,\mathrm du = \frac49\cdot\frac23 u^{3/2}\bigg|_{13/4}^{10} = \frac8{27} \left(10^{3/2} - \left(\frac{13}4\right)^{3/2}\right)

We can simplify this further to

\displaystyle \frac8{27} \left(10\sqrt{10} - \frac{13\sqrt{13}}8\right) = \boxed{\frac{80\sqrt{10}-13\sqrt{13}}{27}}

7 0
3 years ago
Can someone please help me this is geometry I don’t understand I have like more than an hour trying to figure this but I cancele
Aleks04 [339]

Answer:

5, last option

Step-by-step explanation:

Sides to be calculated are equal as both are opposite same angles, are adjacent to common hypotenuse of right triangles

  • 3x+1=2x+6
  • x=6-1
  • x=5
6 0
3 years ago
213.49 in standard form
Travka [436]

Answer:

2.1349 x10^2

Step-by-step explanation:

i used a standard form calculator

7 0
2 years ago
Other questions:
  • 3. Sherri bought a package of pens that contained 15 pens. How many packages should she
    7·1 answer
  • What is the exact circumference of the circle?
    6·1 answer
  • Hi guys! Ive come across this math problem and I was wondering if I could get some help,
    6·2 answers
  • Assume that a password must be at least 8 characters long and include at least 1 digit and at least 1 special character. If peop
    12·1 answer
  • Help wit 19 ASAP WILL MARK BRAINLIST
    14·1 answer
  • the sum of the first six terms of a geometric series is 21/16 . if the common ratio is -1/2 , what is the first term?
    14·1 answer
  • The last one is 0,0<br> c(m)= 160m + 80 <br> my life depends on this
    12·1 answer
  • 1 point
    8·1 answer
  • Pls help due in like 10 mins- no mfkn links pls pls pls <br> no need to explain
    8·2 answers
  • What is the absolute value of 2 1/2<br><br> Write your answer as a mixed number.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!