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solniwko [45]
3 years ago
14

Austin is going for a walk. He takes 4 hours to walk 6.4 miles. What is his speed?

Mathematics
2 answers:
anzhelika [568]3 years ago
7 0
1.6 mph

6.4 miles / 4 hours = 1.6 miles/hours
tatyana61 [14]3 years ago
6 0

Answer:1.6 mph

Step-by-step explanation:

miles/hour

6.4/4

1.6 mph(miles per hour)

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What is the equation of the circle with center (−3, 1) that passes through the point (−5, 3)?
Mariulka [41]

Answer:

( x + 3)^2 + ( y - 1)^2 = 8

Step-by-step explanation:

The equation of a circle with a center and a point

( x - a) ^2 + ( y - b) ^2 = r^2

( x , y) - any point on the circle

( a, b) - center of the circle

r^2 - radius of the circle

( -3 , 1) - center - ( a, b)

a = -3

b = 1

( -5 , 3) - point - ( x, y)

x = -5

y = 3

Step 1: substitute the center into the equation

( x -(-3)^2 + ( y - 1)^2 = r^2

( x + 3)^2 + ( y - 1)^2 = r^2

Step 2 : sub the point into the equation

( x + 3)^2 + ( y - 1)^2 = r^2

( -5 + 3)^2 + ( 3 - 1)^2 = r^2

(-2)^2 + 2^2 = r^2

4 + 4 = r^2

8 = r^2

Step 3 : sub the radius into the equation

( x + 3)^2 + ( y - 1)^2 = r^2

( x + 3)^2 + (y - 1)^2 = 8

Therefore, the equation of the circle is

( x + 3)^2 + (y - 1)^2 = 8

6 0
3 years ago
A jacket is marked down 55% off the original price. If the original price was $160.00, what is the sale price of the jacket befo
Naya [18.7K]

Answer:

72

Step-by-step explanation:

because when you do 55% out of 160 it will give you 88 which you subtract from 160 and then you will end up with 72

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2 years ago
A rectangle is 13 feet long and 4 feet wide. Find its area.
tatuchka [14]

Answer:

hi

Step-by-step explanation:

13×4=52

area is 52

have a nice day

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Step-by-step explanation:

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anzhelika [568]

Answer:

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Step-by-step explanation:

when 13 is subtracted from 5 we get 8

again when 8=2m

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4=m

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6 0
2 years ago
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