You want the (positive) distance when the height is 0, 0= -d^2 + 10d +5.
You would factor that out(You'd get radicals), and the final answer would be
<span>5±<span>30<span>−−</span>√</span></span><span>
You'd take the only positive one of the two, 5 + srt(30)
I hope I did that right :/</span>
Answer:
A
Step-by-step explanation:
We know million has 6 zeros.
So, 1 million would be written as:
1,000,000
Similarly, 27 million would be written as:
27,000,000
We know writing a number in scientific notation would make this a decimal in 1 decimal place, so we would select "2.7" as the base of the scientific number.
Now, how many places to the right do we need to go (in 2.7) to make it 27,000,000?
Counting, we see: 7 places
So, power of 10 would be "7", thus we can write:

Answer choice A is right
Answer:
350 sq ft
Step-by-step explanation:
Given that:
840 sq ft area has a bedroom, kitchen and bathroom.
Let the area of bedroom be
sq ft.
Then the area of kitchen will also be
sq ft.
Let the area of bathroom be
sq ft.
As per question statement:

Tiles ordered to cover two kitchens and two bathrooms is 980 sq ft.
i.e.

Subtracting equation (1) from (2):
i.e. (2) - (1):
sq ft
Putting the value of
in (1):

Therefore, the carpet needed for each bedroom = <em>350 sq ft</em>
Answer:
B
Step-by-step explanation: