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2 years ago

Dan is thinking of a number . The quotient of this number and 1.8 is 31.5. Find dans number

Mathematics

1 answer:

kkurt [141]2 years ago

7 0

31.5 times 1.8.
=31.5×.8+31.5×1
=25.2+31.5
=56.7

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Rachel is a stunt driver, and she's escaping from a building that is about to explode! DDD represents Rachel's remaining distanc

skelet666 [1.2K]

Answer:

38 m/s

Step-by-step explanation:

We are given that

D represent Rachel's remaining distance( in meters ) as a function of time is given by

$D=-38t+220$

We have to find the Rachel's speed.

We know that

$Velocity=\frac{ds}{dt}$

Substitute the values then we get

$v=\frac{d(-38t+220)}{dt}=-38 m/s$

$Speed =\mid v\mid$

$Speed =\mid -38\mid =38m/s$

Hence, the Rachel's speed is given by =38 m/s

4 0

2 years ago

PLEASE HELP MEEEEEEEEEE

Nitella [24]

Answer: we are on venus

Step-by-step explanation:

6 0

3 years ago

10.) For the natural logarithm function, determine the point on the curve where its associated tangent line passes through the

Lunna [17]

f(x)=lnx

y=f(x)

dy/dx= 1/x

tangent at (x,y) has slope 1/x

eqn of tangent is y = mx + c

since the tangent passes through origin, c=0

substitute y = lnx and m= 1/x to above eqn

lnx = 1

x=e

y=lne=1

4 0

2 years ago

Oil is pumped continuously from a well at a rate proportional to the amount of oil left in the well. Initially there were 3 mill

abruzzese [7]

Answer:

V' = -0.11552 *V\\= -0.11552(1.8)\\ \\=-0.20794 million per year

Step-by-step explanation:

Given that oil is pumped continuously from a well at a rate proportional to the amount of oil left in the well. Initially there were 3 million barrels of oil in the well; six years later 1,500,000 barrels remain.

i.e. if V stands for volume of oil, then

$V' =kV\\dv/V= kdt\\ln V = kt+C\\V = Ae^{kt}$

To find A and k

V(0) = A = 3 million

Hence V = $3e^{kt}$

V(6) = 1.5

i.e. $1.5 = 3e^{6k}\\ln 1.5 =ln 3 +6k\\k = -0.11552$

$V(t) = 3e^{-0.11552t}$

a) Using the above value of k , we have

$V' = -0.11552 *V\\= -0.11552(1.8)\\ \\=-0.20794$ million per year.

4 0

3 years ago

|-6+8| = simplify the expression

lilavasa [31]

Answer:

Step-by-step explanation:

|-6+8|

Add/subtract the numbers: -6 + 8 = 2

= |2|

Apply the absolute value rule: |a| = a, a ≥ 0

= 2

8 0

2 years ago