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3 years ago

Which of the following is the product of the rational expressions down below? x-3/x+5•3x/x-5

Mathematics

1 answer:

quester [9]3 years ago

5 0

Answer:

$\dfrac{3x^2-9x}{x^2-5^2}$

Step-by-step explanation:

$\dfrac{x-3}{x+5} \cdot \dfrac{3x}{x-5} = \dfrac{(x-3)\cdot 3x}{(x+5)(x-5)} = \dfrac{3x^2-9x}{x^2-5^2}$

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Negative charge −Q is distributed uniformly over the surface of a thin spherical insulating shell with radius R.

Diano4ka-milaya [45]

Answer:

-(1/4πϵ0)Qq/r^2

Step-by-step explanation:

Firstly we have to assume the uniform shell of radius R as point charge as the point charge.

Then apply coulomb equation of electrostatic charge (Fe=q1q2/4πϵ0r2) where the q1 and q2 are point charges and r is the distance from the centre of charges.

But remember there's a condition that r>>R otherwise the charge will get non-uniformely distributed.

4 0

3 years ago

A toy rocket is launched from the top of a building 135 feet tall at an initial velocity of 167 feet per second. Give the functi

Cerrena [4.2K]

Answer:

h(t) = = -16t^2 + 167t + 135

Step-by-step explanation:

This is an equation of motion of an object umder a constant acceleration(here it is the acceleration due to gravity);

h(t) = = -16t^2 + 167t + 135.

Note: t is the time in seconds and h is the height in feet at time t.

3 0

3 years ago

1. A line

sammy [17]

What are the directions for this?

4 0

3 years ago

Which number should follow in this series: 64/64 9/12 6/12

zheka24 [161]

Answer: $\frac{1}{4}$

Step-by-step explanation:

You can reduce the fractions, then:

$\frac{64}{64}=1$

$\frac{9}{12}=\frac{3}{4}$

$\frac{6}{12}=\frac{3}{6}=\frac{1}{2}$

Rewrite them as following:

$1,\frac{3}{4},\frac{1}{2}$

If you subtract the first number and the second number, you obtain:

$1-\frac{3}{4}=\frac{1}{4}$

If you subtract the second number and the second number, you obtain:

$\frac{3}{4}-\frac{1}{2}=\frac{1}{4}$

Therefore, you must subtract $\frac{1}{2}$ and $\frac{1}{4}$ to obtain the number asked. Then, this is:

$\frac{1}{2}-\frac{1}{4}=\frac{1}{4}$

6 0

3 years ago

Read 2 more answers

6 times 1,356 using expanded form

grin007 [14]

8,000+100+30+6
first you do 6*1356 which is 8136 then just write the numbers as the place value

7 0

3 years ago