Answer: 464 km²
Step-by-step explanation:
We will break this shape up into two parts. You can do this in two different ways, see attached for how I did it.
Area of a rectangle is A = L * W;
40 km * 9 km = 360 km²
13km * 8 km = 104 km²
Now we will add them together for total area:
360 km² + 104 km² = 464 km²
Tip:
Use this app to help you more and faster ( Socratic) it has a picture of the owl but it helps u with any math problem s.
Answer:
-7/2
Step-by-step explanation:
This question is a word problem.
Step 1: interpretation the question
Let's assume the number is x;
X×7 – 1 = X×5 – 8
7x - 1 = 5x - 8
Step 2. Solve the equation for the unknown.
7x - 1 = 5x - 8
Take like terms together
7x - 5x = - 8 +1
2x = -7
Divide both sides by 2
x = -7/2
The answer is -7/2
1.
If he uses a previous estimate of 22%
The problem states within 2 percentage points so the error
is 0.02. The z score for this is 2.575.
The solution would be: 0.22(1-0.22) (2.575/0.02)^2 = 0.1716
(16576.5625) = 2844.538125; therefore we need to round up and the sample size
would be 2845.
2.
If he does not use any prior estimates.
The sample size required to obtain 1 – α
* 100% confidence interval for p with a margin of error E, without a previous
estimate of p, is given by: n = 0.25 (z α/2 divided by E) ^2
Therefore, n = 0.25 (2.575/0.02)^2
= 0.25 (16576.5625)
=4144.14; but we need to round up. So the sample size is
4145.
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Answer:
0.5 %
Step-by-step explanation:
Annual rate = 6 %/yr
Monthly rate = ¹/₁₂ × 6 = 0.5 %/mo
If you invested $100 at 6 % annual simple interest, you would have <em>$106 </em>at the end of the year.
Simple interest is calculated only on the principal.
If the interest were calculated at 0.5 % monthly simple interest, you would get $0.50 at the end of each month. At the end of 12 mo, you would have <em>$106.
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