Multiplayer choice pls help!!
Multiplayer choice pls help!! - 1

Answers

Answer 1
Answer: c^(2) = a^(2) + b^(2) let c = 2 and a = b = s:4 =  s^(2) + s^(2) = 2 s^(2) 2 =  s^(2) s =  √(2)

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What is the side length of a cube with a volume of 8000 in3?

Answers

Volume = 8000 in³

Volume = s³

s³ = 8000 in³
So, s = ³√8000 = 20 in

A circle is centered at the point (-3, 2) and passes through the point (1, 5). The radius of the circle is ______ units. The point (-7, ______) lies on this circle.How would I do this?

Answers

circle formula
(x-h)^2+(y-k)^2=r^2 where (h,k) is the center
and r=radius

to find the radius
we are given one of the points and the center
distnace from them is the radius
distance formula
D=\sqrt{(x2-x1)^(2)+(y2-y1)^(2)}
points (-3,2) and (1,5)
D=\sqrt{(1-(-3))^(2)+(5-2)^(2)}
D=\sqrt{(4)^(2)+(3)^(2)}
D=√(16+9)
D=√(25)
D=5

center is -3,2
r=5
input
(x-(-3))^2+(y-2)^2=5^2
(x+3)^2+(y-2)^2=25 is equation
radius =5
input -7 for x and solve for y
(-7+3)^2+(y-2)^2=25
(-4)^2+(y-2)^2=25
16+(y-2)^2=25
minus 16
(y-2)^2=9
sqqrt
y-2=+/-3
add 2
y=2+/-3
y=5 or -1

the point (-7,5) and (7,-1) lie on this circle



radius=5 units
the points (-7,5) and (-7,1) lie on this circle

A human red blood cell is 7.5 micrometers in diameter.1 centimeter = 10,000 micrometers
What is the diameter in centimeters?

Answers

To solve this question, we do cross multiplication.

1 cm = 10,000 micrometers
7.5 micrometers.

? Cm = 7.5 micrometers X 1 centimetre/10000 micrometers.

? Cm = 0.00075 cm
So 7.5 micrometers = 0.00075 centimetres.

What's A(-2,-4),B(2,4)

Answers

AB = \sqrt{( 2 + 2 ) ^(2) +  (4 + 4)^(2) } =  √(16 + 256) =  √(272) = 16.49

What is 0.8% written as a decimal

Answers

.8% is equal to .008
The answer to your question would be 0.008 because you start from the decimal and you move two spaces to the left, and thats how you will get your decimal. 
Hope i helped!! :D

A rectangular shoebox has a volume of 728 cubic inches. The base of the shoebox measures 8 inches by 6.5 inches. How long is the shoebox?

Answers

Okay to solve this you need to divide the volume to the two measurements
728 ÷ 8 = 91 ÷ 6.5 = 14