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enyata [817]
3 years ago
9

The area of a rectangular tennis court is 140 square meters. It’s length is 6 meters less than twice it’s width. Find the dimens

ions of the tennis court
Mathematics
1 answer:
lina2011 [118]3 years ago
4 0
Let the width be : x
length : (2x - 6)

(2x - 6) (x) = 2x square - 6x

2x square - 6x = 140
2x square - 6x - 140 = 0

if you use the cross method or calculator you’ll get :

( x - 10 ) ( x + 7) = 0

x = 10 or x = -7 ( reject because negative )
so we use x = 10.

width = 10
length = 2(10) - 6 = 14

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One bag of apples costs $4. Five bags of apples costs $15. Which has the better unit<br> price?
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The first one is $4 per bag, as given

For the he second one, you divide $15 by 4, you got $3,75 per bag

Therefore, the second one has the better unit price
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Find the price of a $75.00 mea with a 18% tip.
Eva8 [605]

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$88.50

Step-by-step explanation:

you start by turning the decimal to a fraction by moving the decimal dot 2 places to the left so now you have 0.18

then multiply 0.18 * 75 to get 13.5

then add 15.5 + 75 to get the total meal price which is 88.5

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3 years ago
What integer represents √ 4
wariber [46]

Answer:

2 is the answer

Step-by-step explanation:

the square root of 4 is 2... right?

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3 years ago
Find parametric equations for the line through point P(-1,-1,-1) and Q(-5,7,3) A. x = t + 4; y = t - 8; z = -1t - 4
Elan Coil [88]

Answer:

B) x = -4t - 1; y = 8t - 1; z = 4t - 1

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given points are   P(-1,-1,-1) and Q(-5,7,3)

Let (x₁ , y₁ , z₁) =  P(-1,-1,-1)

Let (x₂ , y₂ , z₂) =   Q(-5,7,3)  

Parametric equation of the line passing through the points  (x₁ , y₁ , z₁) and      (x₂ , y₂ , z₂)

\frac{x-x_{1} }{x_{2}-x_{1}  }  = \frac{y-y_{1} }{y_{2}-y_{1}  } = \frac{z-z_{1} }{z_{2}-z_{1}  } = t

\frac{x-(-1)}{-5-(-1)} = \frac{y -(-1)}{7-(-1)} = \frac{z-(-1)}{3-(-1)}  = t

\frac{x-(-1)}{-4} = \frac{y -(-1)}{8} = \frac{z-(-1)}{4}  = t

Equating  each term

             \frac{x+1}{-4} = t

     ⇒  x + 1 = - 4 t

    ⇒   x = - 4 t -1

          \frac{y +1}{8}  = t  

         y + 1 = 8 t

     ⇒  y  = 8 t - 1

        \frac{Z+1}{4} =1

  ⇒  z +1 = 4t

   ⇒ z = 4t -1

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

parametric equations for the line through point P(-1,-1,-1) and Q(-5,7,3)

are

x = -4t - 1; y = 8t - 1; z = 4t - 1

                               

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What is 5/6(6x-12)+14x=
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Answer:

Dvfgghytjyjt

Step-by-step explanation:

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