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alexandr402 [8]
3 years ago
9

Adam wanted to play his video games. His mother told him that he needed to finish his homework, clean out the dishwasher, and cl

ean his room before playing video games. He completed his homework in 48 minutes. He took 25 minutes to clean out the dishwasher. He took 75 minutes to clean his room. How much time did Adam have to spend doing homework and cleaning before playing video games?
Mathematics
1 answer:
Deffense [45]3 years ago
5 0

Answer:

148 minutes = 2h 28 min

Step-by-step explanation:

48min+(25+75mins)=48+100=148

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If p=(-3,-2) and q=(1,6) are the endpoints of the diameter of a circle find the equation of the circle
stira [4]

Answer:

<em>The equation of the circle   (x +1) )² +(y-(2))² = (2(√5))²</em>

<em>   or </em>

<em>The equation of the circle    x² + 2 x + y² - 4 y  = 15</em>

<u>Step-by-step explanation:</u>

Given points end  Points are p(-3,-2) and q( 1,6)

<em>The distance of two points formula</em>

P Q = \sqrt{x_{2} - x_{1})^{2} + ((y_{2} -y_{1})^{2}   }

P Q = \sqrt{1 - (-3)^{2} + ((6 -(-2))^{2}   }

P Q = \sqrt{16+64} = \sqrt{80}

<em>The diameter 'd' = 2 r</em>

                       2 r = √80

                            = \sqrt{16 X 5}

                           = 4 \sqrt{5}

                     <em> r =  2√5</em>

<em>Mid-point of two end points </em>

<em>                        </em>(\frac{x_{1} + x_{2} }{2} , \frac{y_{1} +y_{2} }{2} ) = (\frac{-3+1}{2} ,\frac{-2 +6}{2} )<em></em>

<em>                                               = (-1 ,2)</em>

<em>Mid-point of two end points = center of the circle</em>

<em>                                     (h,k) = (-1 , 2)</em>

                 

The equation of the circle

           (x -h )² +(y-k)² = r²

<em>          (x -(-1) )² +(y-(2))² = (2(√5))²</em>

<em>         x² + 2 x + 1 + y² - 4 y + 4 = 20</em>

<em>          x² + 2 x + y² - 4 y  = 20 -5</em>

<em>           x² + 2 x + y² - 4 y  = 15</em>

<u><em>Final answer</em></u><em>:-</em>

<em>The equation of the circle   (x +1) )² +(y-(2))² = (2(√5))²</em>

<em>   or </em>

<em>The equation of the circle    x² + 2 x + y² - 4 y  = 15</em>

<em>                  </em>

6 0
4 years ago
In the figure below, AC is tangent to circle B. BA is a radius of circle B and A is a point of tangency. If AB is equal to 30 an
schepotkina [342]
From the picture you can see that presented triangle is right. The right angle is at point A. That means that we can use pythagorean theorem to find lenght of unknown side of triangle if we know lenghts of  2 others.

For this scenario we have lenghts of 2 legs (shorter sides of triangle) and we need to find hypothenuse.

Formula is this:
BC^2 = AC^2 + AB^2

BC^2 = 55^2 + 30^2
BC = 62.649

Once rounded we get that the answer is 62.6
6 0
3 years ago
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svp [43]

Answer:

0.18

Step-by-step explanation:

12(-0.3)^2(1/6)

6(2(-0.3)^2(1/6)

cancel the common factor

2(-0.3)^2

2X0.09

=0.18

4 0
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The diameter of circle Q is 14 cm. Find the arc length of PR.
mario62 [17]

Answer:

4.15, or 1.32pi

Step-by-step explanation:

arclength is circumference(34/360)

so pi x d (34/360)

3.14 x 14 x (34/360) = 4.15, or 1.32pi

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37 divided by a number s
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Answer:

37/s (not finished, this is an expression)

Step-by-step explanation:

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