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eduard
2 years ago
15

To convert 0.73 hours into minutes, which ratio could you multiply by?

Mathematics
2 answers:
shutvik [7]2 years ago
7 0
You can use this ratio:

1hour/60minutes=0.73hours/Xminutes

and cross multiply
so x= 43.8 minutes
melomori [17]2 years ago
4 0
60 minutes in 1 hour, so 0.73_h  * (60_m)/1_h= 43.8_m
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Show that if the point with coordinates (x,y) is equidistant from the point (2,0) and the line y=−4, then y=1/8(x-2)²-2.
harkovskaia [24]

Answer:

The demonstration is showed below

Step-by-step explanation:

The distance betwenn two points is given by:

d = \sqrt{(x2-x1)^2+(y2-y1)^2}

If the point is equidistant from a point and a line, the distance must be equal. For the line let's select the point (x,-4), because the distance will be ortogonal, and is the small distance between a point and a line. So:

\sqrt{(x-2)^2+(y-0)^2}  = \sqrt{(x-x)^2+(y+4)^2}

Removing the squares:

(x-2)² + y² = (y+4)²

(x-2)² + y² = y² + 8y + 16

y² - y² - 8y = 16 - (x-2)²

8y = (x-2)² - 16

y = (1/8)*(x-2)² - 16/8

y = (1/8)*(x-2)² - 2

6 0
2 years ago
Graph the line that passes through the points ( 0 , − 4) and (−5,2) and determine the equation of the line.
Eduardwww [97]
  1. Answer:

i am highly sorry but there is no graph for me to help you with on this site :(

but to help you the X line always comes first for example the (-5,2) the -5 would be on the X line. I really hope that this help. :)

7 0
3 years ago
A circle is inscribed in a square, as shown in the figure below. The length of
mafiozo [28]

Answer:

78.5 cm^2

Step-by-step explanation:

the circle's diameter is 10cm --> its radius is 5cm

the area of the circle is 5^2 x 3.14 = 78.5cm^2

4 0
3 years ago
Can you answer the question please I really need help
LenaWriter [7]
The answer is 1 7/30 hope this helps
5 0
3 years ago
Which of the following shows the solution to the inequality
otez555 [7]

Answer:

I got x = 1

Step-by-step explanation:

First to isolate the variable you add 3 to both sides which will give you 1/2x is less than or equal to 2. Then divide both sides by 1/2 and you will get x = 1. To check the answer I just did:    

1/2(1) -3 \leq -1\\1/2 -3\leq -1\\-2.5\leq -1

And since -2.5 is less than -1 this statement is true. x does in fact equal 1

7 0
2 years ago
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