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3 years ago

The diameter of a certain star is about 6.8 * 10^6 km Express this distance in standard form.

1 answer:

3 0

6.8*10^6 km = 6.8*10*10^5 km = 68* 100,000 km = 6,800,000 km
.......................... (10^5 means one folowed by five zeroes)

wich is 6 million and 8 hundred thousand clicks

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Do the right side<br> show work<br> 2,4,6,8,10

Anna71 [15]

Answer:

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3 years ago

NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=−4.9t2+121t

Alenkasestr [34]

NASA launches a rocket at t = 0 seconds. Its height, in meters above sea-level, as a function of time is given by

$h(t)=-4.9t^2+121t+283$

The sea level is represented by h = 0, therefore, to find the corresponding time when h splashes into the ocean we have to solve for t the following equation:

$h(t)=0\implies-4.9t^2+121t+283=0$

Using the quadratic formula, the solution for our problem is

$\begin{gathered} t=\frac{-(121)\pm\sqrt{(121)^2-4(-4.9)(283)}}{2(-4.9)} \\ =\frac{121\pm142.083778...}{9.8} \\ =\frac{121+142.083778...}{9.8} \\ =26.8452834694... \end{gathered}$

The rocket splashes after 26.845 seconds.

The maximum of this function happens at the root of the derivative. Differentiating our function, we have

$h^{\prime}(t)=-9.8t+121$

The root is

$-9.8t+121=0\implies t=\frac{121}{9.8}=12.347$

Then, the maximum height is

$h(12.347)=1029.99$

1029.99 meters above sea level.

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1 year ago

Ellie is placing an order for 5 tuna salads and 2 chicken salads. Each salad costs $8.50, including tax. What is the total cost

Karo-lina-s [1.5K]

Answer:

The total cost of the salad is $59.50

Step-by-step explanation:

If each salad irrespective of there type costs $8.50

and Ellie ordered 5 tuna and 2 chicken salad, that

5+2 = 7 salads

Then the total cost of the salad will be

7*8.50 = $59.50

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3 years ago

Is it true or false that a bbinomial can have a degree of zero?

Mumz [18]

No, because any real valued term with degree 0 would be a constant. All constants in an expression can be combined into single term. Therefore if the expression were of degree 0, all the terms would be constants and could be combined into a single term making the expression a monomial.

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3 years ago

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If (6^0)^x=1 what are the possible values of x

Monica [59]

X could equal 0 or 1

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3 years ago