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
guapka [62]
2 years ago
11

2.1 km =

Mathematics
1 answer:
likoan [24]2 years ago
3 0
2,100,000 Centimeters
You might be interested in
Help me plsssssssssssssssss
velikii [3]

Answer:

h=12

Step-by-step explanation:

by cross multiplying we get 1h=12 or h=12 so h=12

8 0
2 years ago
Find the value of x in the equation below.<br> 17 = 14 +2
ozzi

Answer:

3

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please help me! thank you so much
Luda [366]

The Correct Answer Is f(x)=2.5x+5

7 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
Which equation models the problem?
morpeh [17]

Answer:

B=0.10x+2

Step-by-step

sponsor b is paying .10 x 52 pins + $2.  = 5.20 + 2 = 7.20

it isn’t  the 2 times 52

it is not subtracting the money

and we have to consider the 52 pins as X

7 0
2 years ago
Other questions:
  • Last week, a coral reef grew 19.5 mm taller. How much did it grow in meters?
    7·2 answers
  • 778,300,000 in scientific notation​
    13·2 answers
  • 2/3 is greater then 1/2 why?
    8·2 answers
  • Mary runs 10/4 miles everyday and Beth runs 5/2 miles everyday. Who runs further?
    13·1 answer
  • At a gas station where people can pay in cash or by credit card, 20% of people pay by credit card and 80% of people pay cash. A
    13·2 answers
  •  True or False?If a 40 kg person accelerating at 10 m/ s2, then the magnitude of the force acting on him or her is 400 N.
    11·1 answer
  • WOODLL PUNTO. CU
    9·2 answers
  • Find the area of the figure,
    8·1 answer
  • Right 1, up 2<br> Rule translation
    5·1 answer
  • What is the difference of the two expressions shown below (3/4X+2)-(1/4x+5). Explain why
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!