Ask question

Ask question

All categories

3 years ago

10

The star Alpha Centauri is approximately 40653230000000 kilometres from earth,write this number in standard form to 3 significan

t figures.

1 answer:

almond37 [142]3 years ago

8 0

4.065323 × 10^13
Hope this helps!
Vote me Brainliest!

You might be interested in

Quick Fix Inc. repairs bikes. Their revenue, in dollars, can be modeled by the equation y = 400 + 220x, where x is the number of

Sholpan [36]

The break even point is that where the total cost is equal to the total revenue. To determine the number of hours in which Quick Fix Inc. will have a breakeven, we have to equate the two equations and solve for the value of x,
400 + 220 x = 20x² + 160
The values of x from the equation are 12 and -1. Since, we do not have a negative for the number of hours, our answer is 12 hours.

5 0

2 years ago

Read 2 more answers

Please please help find height and volume of pyramid!!!

geniusboy [140]

FORMULA:

Volume of pyramid = L × B × H/3

Height of pyramid = 3V/area of base(L × B)

ANSWER:

So, we have to just plug the respective value.

Height of given pyramid = √(22.1² - 14²)

√(488.41 - 196)
√292.41 = 17.1m

Now, Volume of given pyramid = 28 × 28 × 17.1/3

784 × 17.1/3
4468.8m³

5 0

2 years ago

Read 2 more answers

If a, b, c are all non -zero and a+b+c= 0, prove a²÷ bc +b²÷ ac +c²÷ ab =3

Step2247 [10]

Combining the fractions gives

$\dfrac{a^2}{bc}+\dfrac{b^2}{ac}+\dfrac{c^2}{ab}=\dfrac{a^3+b^3+c^3}{abc}$

Since $a+b+c=0$ , we also have

$(a+b+c)^3=0$

$a^3+b^3+c^3+3a^2b+3a^2c+3ab^2+3b^2c+3ac^2+3bc^2+6abc=0$

If we add and subtract the last 7 terms of the left hand side to/from the numerator, we get

$\dfrac{(a+b+c)^3-(3a^2b+3a^2c+3ab^2+3b^2c+3ac^2+3bc^2+6abc)}{abc}$

$=-3\dfrac{a^2b+a^2c+ab^2+b^2c+ac^2+bc^2+2abc}{abc}$

$=-3\dfrac{(a+b)(a+c)(b+c)}{abc}$

Also because $a+b+c=0$ , we have

$\begin{cases}a=-(b+c)\\b=-(a+c)\\c=-(a+b)\end{cases}$

so we find that

$-3\dfrac{(a+b)(a+c)(b+c)}{abc}=-3\dfrac{(-c)(-b)(-a)}{abc}=3\dfrac{abc}{abc}=3$

4 0

2 years ago

What is the distance between A and B? Round your answer to the nearest hundredth. A coordinate plane is shown. Point A is locate

tekilochka [14]

Sqrt( (0-7)^2 + (6+2)^2 )

sqrt( 49 + 64 )

sqrt( 113)

5 0

2 years ago

Read 2 more answers

True or false.2kilograms=200grams

finlep [7]

Answer:

wrong 2 kilograms= 2000 grams

Hope This Helps! Have A Nice Day!!

3 0

2 years ago