3 years ago

Math Questions!!! Please help if you see this!!

Mathematics

1 answer:

Jet001 [13]3 years ago

3 0

6,840 I think for the answer

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Eight more than twice a number is equal to ten less than five times the number. Let n represent the number. Write an equation th

solniwko [45]

The answer is 8+2n=5n-10

7 0

2 years ago

Read 2 more answers

Can someone please HELP ME!!

IRISSAK [1]

Volume of a cone = PI x r^2 x h/3

Volume = PI x 5^2 x 9/3

Volume = 235.62 cubic cm.

Volume of a block of wax = L x W x H

Volume = 2 x 4 x 3 = 24 cubic cm.

Total number of blocks = Volume of cone / volume of blocks:

235.62 / 24 = 9.82

Round up to 10.

They will need 10 blocks.

4 0

2 years ago

HELP AGAIN PLSS I WILL MARK YOU BRAINLIEST!

notsponge [240]

Answer:

132

Total Area = Area of top rectangle+Area of trapezoid w/ bases 7 and 19

= base*height+(average of bases)(height of trapezoid)

= 7*4+8*(7+19)/2

= 28+104

= 132

5 0

2 years ago

N divided by 8 in an algebraic expression

rusak2 [61]

Answer:

n/8

Step-by-step explanation:

5 0

3 years ago

This is solving differential equations by sepeartion of variables

Brums [2.3K]

$\mathrm dy+k(y-70)\,\mathrm dx=0$

Separating variables gives

$\dfrac{\mathrm dy}{y-70}=-k\,\mathrm dx$

Integrating both sides gives

$\displaystyle\int\frac{\mathrm dy}{y-70}=-k\int\mathrm dx$
$\ln|y-70|+C_1=-kx+C_2$
$\ln|y-70|=-kx+C$

Solving for $y$ gives

$e^{\ln|y-70|}=e^{-kx+C}$
$y-70=e^{-kx}e^C$
$y=Ce^{-kx}+70$

As $y(1)=140$ , you get

$140=Ce^{-k}+70$
$70=Ce^{-k}$
$C=70e^k$

so the particular solution to this ODE is

$y=70e^ke^{-kx}+70$
$y=70e^{k(1-x)}+70$

Unless you have any more information, you're done.

5 0

3 years ago