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inessss [21]
3 years ago
15

How to find the perimeter of a semicircle​

Mathematics
1 answer:
Elza [17]3 years ago
5 0

Answer: Formula: P=\frac{\pi d}{2}+d

Step-by-step explanation:

Formula: P=\frac{\pi d}{2}+d

Where;

P=perimeter\\\pi = pi (3.14)\\d= diameter\\

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If you borrow $800 for 8 years at an annual interest rate of 11%, how much will you pay altogether?
MAVERICK [17]

Answer:

Step-by-step explanation:

1. $800 x 8 yrs. = $6,400

2. the interest = $704

3. total would be $7,104

btw to for step 2 this is what i did:

$800 x 0.11 (the interest rate in a decimal form)= $88 then $88 x 8 years= 704

8 0
3 years ago
What is y-intercept as an ordered pair (x,y) for y = 1/3x - 1 !!
user100 [1]

Answer:y=1

Step-by-step explanation:

5 0
3 years ago
Which of these is equal to sin 58°?
forsale [732]

Answer:

C Cos32

Step-by-step explanation:

7 0
2 years ago
Y is inversely proportional to a^3
Ludmilka [50]

Answer:

y = 0.64/x^3

Step-by-step explanation:

If y is inversely proportional to a^3, we can write the equation:

y * a^3 = k

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10 * 2^3 = k

k = 80

If a is directly proportional to x, we can write the equation:

a = c * x

Using x = 4 and a = 20, we have:

20 = c * 4

c = 5

Now, using the value of a = 5*x in the equation y * a^3 = 80, we have:

y * (5x)^3 = 80

y * 125x3 = 80

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6 0
3 years ago
One crew can seal a parking lot in 12 hours and another in 15 hours. how long will it take to seal the parking lot if the two cr
MakcuM [25]
This is a typical work problem in algebra. The approach to this is using the equation: Rt = 1, where R is the rate per person working, t is the amount of time worked by an individual. All their rates must equal to 1. The solution is as follows:

12/x + 15/x = 1
Solving for x,
x = 27 hours

So, if they work together, they can finish the work in 27 hours.
6 0
3 years ago
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