(I screenshot the question and choices) (plsss help me solve this <3 )

Answers

Answer 1

Answer: Ok, the formula to find the area of a regular polygon is...

A = 1/2 nsr

In this equation...

n = number of sides
s= side length
r = apothem (radius of the inscribed circle)

To find the area, we must first find the apothem. The apothem is the radius of the inscribed circle (draw a line from the center of the figure to the center of one of the sides). If you draw the apothem in to the figure, it creates a right triangle with a hypotenuse of 13.07 in and one side length of 5 in (1/2 of the figure's side length). Now we can find the apothem with the formula

a^2 + b^2 = c^2
a^2 = c^2 - b^2
a^2 = 13.07^2 - 5^2
a^2 = 170.8249 - 25
a^2 = 145.8249
a = 12.076

Now we have the value for the apothem and we can plug it into the area formula...

A = 1/2 nsr
(recall that n = number of sides; s= side length; r= apothem)

A = 1/2(8×10×12.076)
A = 40×12.076
A= 483.04 in^2

Rounded to the nearest tenth would be...

483.0 in^2

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Please Help Will Give Brainliest If Correct!The line segment shown is rotated 90° about the origin (counterclockwise). What are the new coordinates of point A?

A) (2, 1)
B) (-2, 1)
C) (-2, -1)
D) (1, 2)

Answers

Point A before being rotated = (1,-2)

A point (x,y) is rotated counterclockwise by 90°. The result will be (-y,x)

If point (1,-2) rotated counterclockwise by 90°, the result will be (2,1)

ANSWER: A. (2,1)

Devon is trying to find the unit price on a 6-pack of energy drinks on sale for $2.99. His sister says that at that price,
each energy drink would cost just over $2.00
. Is she correct and how do you know? If she is not, how would
Devon’s sister find the correct price?

Answers

No, she's not. If each energy drink's unit cost was just over $2.00, and there are 6 drinks in a pack, then that's at least $12.00 right there, but the entire 6-pack is on sale for only $2.99. She should find the correct price by dividing $2.99/6, resulting in about $0.50 per drink

This system has one solution. What is the y-coordinate of the solution? y = 5x - 9
y = x^2 - 3x + 7

Answers

set 5x-9 = $x^(2)$ - 3x + 7
⇒ 0 = $x^(2)$ - 8x + 16
⇒ factoring we get... 0 = (x-4)² so the x-coordinate for the solution is x = 4
To find the y-coordinate, plug x = 4 into one of the equations (you can plug it into both just to make sure you're right).
y = 5x - 9 plug in x = 4 ⇒ y = 5(4) - 9 = 20 - 9 = 11
y = $x^(2)$ - 3x + 7 plug in x = 4 ⇒ y = (4)² - 3(4) + 7 = 16 - 12 + 7 = 11
∴ The solution to the system is (4, 11) which has y-coordinate 11.

Sam had four test last month his scores were 81 94 83 and 91 what is the median of his scores

Answers

put them in order of least to greatest and then cross out them till you get the middle number. 81,83,91,94. answer is 91.

How do I show the work for 5.4 divided by 39.42?

Answers

You have to move the decimal point right the same number of places for each one and divide normally so it would be 540/3942 and it is 0.13698630136986 which is irrational so you have to round to the nearest tenth, hundredth, or thousandth, depending on what the directions say.

what you can do is to write what you type on your calculator. So type in 39.42/5.4=7.3

You put $500 in a savings account which earns compound interest at a rate of 0.2% per month. If you don't make any deposits or withdrawls, how much will you have in your account in 10 years (120 months)? Round your answer to the nearest whole cent.

Answers

The amount is $510.12 and the interest is $10.12. Explanation STEP 1: Convert 120 months into years. 120 months =12012 years=10 years STEP 2: To find amount we use formula: A=P(1+rn)n⋅t A = total amount P = principal or amount of money deposited, r = annual interest rate n = number of times compounded per year t = time in years In this example we have P=$500 , r=0.2% , n=12 and t=10 years After plugging the given information we have AAAA=500(1+0.00212)12⋅10=500⋅1.000167120=500⋅1.02024=510.12 STEP 3: To find interest we use formula A=P+I, since A=510.12 and P = 500 we have: A510.12II=P+I=500+I=510.12−500=10.12

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