6 hours is 3
7 hours is 6
8 hours is 7
And 9 hours is 4
Answer:
C = 50.24
A = 7,925.540864 (Round to whatever you want)
Step-by-step explanation:
c = 2πr
c = 2(3.14)(8)
c= 50.24
A = πr^2
A = (3.14)(50.24)^2
A = 7,925.540864
The answer is 12 scarves.
If the number N of scarves she can make is inversely proportional to the area <span>A of each scarf, then we have equation:
</span>N = x/A,
where x is the total area of the large piece of fabric she uses
First, we need to calculate what is the total area of the <span>large piece of fabric she uses (x):
It is given:
A = 4 square feet
N = 15
If </span>N = x/A, then: <span>x = A * N = 4 * 15 = 60 square feet
Now, we have to calculate the number of scarves she can make if the area of the scarf is 5 square feet.
So, it is given:
x = 60 square feet,
A = 5 square feet
</span>If <span>N = x/A, then: N = 60/5 = 12 scarves </span>
Answer:
Number 6 is A and number 7 is B
Step-by-step explanation:
First convert the distance to miles
<span>9.5 × 10^12 km x 0.62 miles/km </span>
<span>= (0.62 × 9.5) x 10^12 miles </span>
<span>= 5.9 × 10^12 miles </span>
<span>But we want to triple that, because it is 3 light years (not just 1): </span>
<span>3 x 5.9 × 10^12 miles </span>
<span>≈ 18 × 10^12 miles </span>
<span>≈ 1.8 × 10^13 miles </span>
<span>Next divide by the speed to get the time (in hours). </span>
<span>t = 1.8 × 10^13 miles / 17000 miles/hour </span>
<span>Let's convert the speed to scientific notation: </span>
<span>t = 1.8 × 10^13 / 1.7 x 10^4 </span>
<span>t = (1.8 / 1.7) × (10^13 / 10^4) <-- when dividing powers with the same base, subtract the exponents </span>
<span>t ≈ 1.1 × 10^9 </span>
<span>Let's convert that back to standard notation. </span>
<span>Answer: </span>
<span>1,100,000,000 hours</span>