All categories

3 years ago

The distance from the Earth to Saturn averages 886 million (886,000,000) miles. Write this number in scientific notation.

Mathematics

1 answer:

kiruha [24]3 years ago

7 0

Answer:

8.86 x 10^8

Step-by-step explanation:

Scientific notation means that you represent the standard form of a number like this:

number less than ten x 10 to the ___ power

In standard form, the decimal point is at the end of 886,000,000.

You have to move the decimal point to the left until it creates a number less than 10, but greater than 1:

8.86,000,000

You count how many decimal places you moved it. In this case, it is 8.

So your answer becomes 8.86 x 10^8

You might be interested in

Find the area of a rectangle with the verticies A(-1,-1) B(0,-3) C(4,-1) D(3,1)

ElenaW [278]

Answer:

The Area would be 10.

8 0

3 years ago

A spinning giant star of initial radius R1 and angular speed ω1 suddenly collapses radially inward reaching a new radius R2 = 0.

tiny-mole [99]

Answer:

K1/K2=4

Step-by-step explanation:

The kinetic energy of a rotating sphere is given by:

$K=\frac{I*\omega^{2} }{2}$

The moment of inertia of a solid sphere is given by

$I=\frac{2MR^{2} }{5}$

The initial kinetic energy is therefore

$K_1=\frac{2MR^{2}*\omega^{2} }{10}$

$K_1=\frac{MR_1^{2}*\omega^{2} }{5}$

The final kinetic energy is given by

$K_2=\frac{MR_2^{2}*\omega^{2} }{5}$

Therefore the relation K1/K2 if R2 = 0.5R1

$\frac{K_1}{K_2} =\frac{5M(R_1)^{2}*\omega^{2} }{5*M(0.5R_1)^{2} \omega^{2}}$

The text says nothing about the final angular velocity just the collapse of the collapse of the radius

$\frac{K_1}{K_2} =\frac{1 }{(0.5)^{2} }=4$

3 0

3 years ago

The car travelled at the constant speed of 50.5 mph for 3 hours.<br> How far did the car travelled?

german

151.5 miles

Step-by-step explanation:

50.5 × 3 = 151.5

4 0

3 years ago

Read 2 more answers

I need some help with graphing again.

Rashid [163]

To find the x intercepts, we need to put the standard form equation into factored form.

Which two numbers multiply to -8 and add to -2?

$-4*2=-8$

$-4+2=-2$

So the factored form is

$(x-4)(x+2)$

That means the x intercepts are at $x=4,-2$

So now we have the x intercepts.

To find the vertex, we need to convert the standard form equation into vertex form.

The formula of vertex form is $y=a(x-h)^2+k$

Since the a value in the standard form equation is 1, the a value in vertex form is also one.

The h value can be found using the formula $h=\frac{-b}{2a}$

Which comes out to $\frac{2}{2}$ or 1.

To find the k value, we can just plug in what we got for h back into the equation.

$(1)^2-2(1)-8=-9$

So the vertex is $(1,-9)$ .

This also means the axis of symmetry is $x=-1$

Finally, to find the y intercept, we plug in 0 for x and solve.

$(0)^2-2(0)-8=-8$

So the y intercept is $(0,-8)$ .

8 0

4 years ago

Write an expression that is equivalent to 30(x + y + 1)

Lerok [7]

Answer:

30x + 30y +30

Step-by-step explanation:

4 0

3 years ago