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Scilla [17]
3 years ago
9

Wich number is thirty-six thousand, two hundred fourteen and nine thousandths? A 36,214.009 B 36,214.09 C 36,214.900 D 36,241.00

9
Mathematics
2 answers:
son4ous [18]3 years ago
5 0

Answer:

The correct answer is a (:

Step-by-step explanation:


vovikov84 [41]3 years ago
4 0
A is the correct Answer
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a circle has a center (3,5) and a diameter AB. The coordinates of A are (-4,6). what are the coordinates of B?
Kruka [31]
Find the length of the radius.

r= \sqrt{(3-(-4))^2+(5-6)^2}
\\r =  \sqrt{7^2+(-1)^2}
\\r= \sqrt{50} 
\\  r=5 \sqrt{2}

Find the length of the diameter.

d = 2r = 2 × 5√2 = 10√2

Point B must lie on a line AC, where C is a center of a circle.
Find equation of line AC.
A(–4, 6), C(3, 5)

y-y_1= \frac{y_2-y_1}{x_2-x_1}(x-x_1)
\\y-6= \frac{5-6}{3-(-4)}  (x-(-4))
\\y-6=- \frac{1}{7} (x+4)
\\7y-42=-x-4
\\x+7y-38=0 

The distance from B(x, y) to C(3, 5) is 5√2.
\sqrt{(x-3)^2+(y-5)^2}=5 \sqrt{2} 
 \\(x-3)^2+(y-5)^2=(5 \sqrt{2})^2 
\\(x-3)^2+(y-5)^2=50

Solve system of equations.
x+7y-38=0
\\(x-3)^2+(y-5)^2=50
\\
\\x=38-7y
\\(38-7y-3)^2+(y-5)^2=50
\\(35-7y)^2+(y-5)^2=50
\\1225-490y+49y^2+y^2-10y+25-50=0
\\50y^2-500y+1200=0
\\y^2-10y+24=0
\\y^2-6y-4y+24=0
\\y(y-6)-4(y-6)=0 \\(y-6)(y-4)=0 \\y_1=6,y_2=4


x_1=38-7y_1=38-7 \times 6 = 38-42=-4
\\x_2=38-7y_2=38-7 \times 4 = 38-28=10


Point B could have coordinates
\\
\\(x_1,y_1)=(-4,6),(x_2,y_2)=(10,4)


But (–4, 6) are the coordinates of point A.
Therefore, point B has coordinates (10,4).
8 0
3 years ago
A sweater that regularly sold for $52 is now on sale at 30% off. What is the sale price?
gulaghasi [49]

Answer:

Step-by-step explanation:

What you have to do is set it up like this

what you have to do is

(30*52) ÷ 100=x

1664 ÷ 100= 16.64

52-16.64= 35.36

35.36 is the new sale price

3 0
3 years ago
A fish has a triangular tooth with the height that is 2 centimeters longer than the base. If the are of the tooth is 12 square c
OlgaM077 [116]

Answer:Fishes have a triangular teeth with a height that is 1 centimeter longer than the base. If the area of one tooth is 15 square centimeters, find its base and height. The triangle shows the base to be x and the height to be x+1.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Simplify<br> (hint: use pemdas)<br><br> 9 - (-15) • 3 + 4 ÷ (-2)
lapo4ka [179]

Answer:

9 - (-15) x 3 + 4 / (-2)

9 + 15 x 3 -2

9 + 45 -2

54 - 2

52

5 0
2 years ago
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What is the quotient of 3/4 ÷ 1/5?
vivado [14]

Answer:

o.15 :)

Step-by-step explanation:

8 0
2 years ago
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