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2 years ago

Make r the subject of the formula V=Tr^2h

Mathematics

1 answer:

mariarad [96]2 years ago

4 0

Answer:

r = √V / Th

Step-by-step explanation:

V=Tr^2h

V / Th = r^2 ..........bring T and h on the other side as V

r = √V / Th ____ $\sqrt{V/Th}$

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Express 4 4/9 as an improper fraction. Example please.

miskamm [114]

Simple...

you have: $4 \frac{4}{9}$

To make this into an improper fraction-->>

1.) Multiply whole number by denominator

2.)Add the number you got plus the numerator

3.) Use the original denominator to finish your improper fraction

Example: $4\frac{4}{9}$

4*9=36

36+4=40

$\frac{40}{9}$

Thus, your answer.

3 0

3 years ago

I 5 The sum 1 + 9 + 3 + 3 + i + 2 gives the amount of mix. 1+ 2+ 3+3+1+1

SVETLANKA909090 [29]

Answer:

i = -7

Step-by-step explanation:

1) Set up equation

1+9+3+3+i+2 = 1+2+3+3+1+1

2) Combine like terms

18+i = 11

3) Factor out for the answer

18+i = 11

18-18+i = 11-18

i = -7

Hopefully this helps you!

6 0

3 years ago

Newton’s law of cooling states that dx/dt= −k(x − A) where x is the temperature, t is time, A is the ambient temperature, and k

Vadim26 [7]

Answer:

(a) The solution to the differential equation is x = A_0Coswt + Ce^(-kx)

(b) The initial condition t > 0 will not make much of a difference.

Step-by-step explanation:

Given the differential equation

dx/dt= −k(x − A); t > 0, A = A_0Coswt

(a) To solve the differential equation, first separate the variables.

dx/(x - A) = -kdt

Integrating both sides, we have

ln(x - A) = -kt + c

x - A = Ce^(-kt) (Where C = ce^(-kt))

x = A + Ce^(-kx)

Now, we put A = A_0Coswt

x = A_0Coswt + Ce^(-kx) (Where C is constant.)

And we have the solution.

(b) Since temperature t ≠ 0, the initial condition t > 0 will not make much of a difference because, Cos(wt) = Cos(-wt).

It is not any different from when t < 0.

7 0

3 years ago

Explain why 7x+3 cannot be factorised

Stells [14]

Answer:

There is no common factor

Step-by-step explanation:

6 0

3 years ago

3(x +2)-9x+5<br> What is the answer

Alika [10]

Answer:

-6x+11

Step-by-step explanation:

8 0

4 years ago

Read 2 more answers