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Veronika [31]
2 years ago
8

The archway of the main entrance of a university is modeled by the quadratic equation y = -x^2 + 6x. The university is hanging a

banner at the main entrance at an angle defined by the equation 4y = 21 − x. At what points should the banner be attached to the archway?
A.) (1, 5.5) and (5.25, 6.56)
B.) (1, 5) and (5.25, 3.94)
C.) (1.5, 4.87) and (3.5, 4.37)
D.) (1.5, 5.62) and (3.5, 6.12)
E.) There is no real solution

Mathematics
2 answers:
Galina-37 [17]2 years ago
8 0
So the problem ask on which of the following choices you had is the points should the banner be attached in the archway and the best answer among the choices will be letter C. (1.5, 4.87) and (3.5, 4.37). I hope this will help you and feel free to ask for more.
BlackZzzverrR [31]2 years ago
3 0

Answer:

(1, 5) and (5.25, 3.94)

Step-by-step explanation:

The archway of the main entrance of a university is modeled by the quadratic equation : y = -x^2 + 6x  

The university is hanging a banner at the main entrance at an angle defined by the equation 4y = 21 - x

Now we are supposed to find At what points should the banner be attached to the archway.

So, we are supposed to find the intersections points of the two given equations.

Refer the attached figure

y = -x^2 + 6x -- Black line

4y = 21 - x -- Red line

Thus the intersection points of given equations are : (1, 5) and (5.25, 3.94)

Hence the banner be attached at (1, 5) and (5.25, 3.94) to the archway.

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A yogurt shop offers 6 different flavors of frozen yogurt and 12 different toppings. How many choices are possible for a single
Goryan [66]

Answer:

#3) 72; #4) 40,320; #5) 90.

Step-by-step explanation:

#3) The number of possible choices are found by multiplying the choices of flavors and the choices of toppings:

6*12=72.

#4) The ordering of 8 cards is a permutation, given by 8!=40,320.

#5) This is a permutation of 10 objects taken 2 at a time:

P(10,2) = 10!/(10-2)!=10!/8!=90.

P.S I had the same question once.

7 0
1 year ago
Ashley recently opened a store that uses only natural ingredients. She wants to advertise her products by distributing bags of s
Elenna [48]

I will rewrite the question for better understanding:

Ashley recently opened a store that uses only natural ingredients. She wants to advertise her products by distributing bags of samples in her neighborhood. It takes Ashley 2/3 of a minute to prepare one bag. It takes each of her friends 75% longer to prepare a bag. How many hours will it take Ashley and 4 of her friends to prepare 1575 bags of samples?

Answer:

  • <em><u>5.3 hours</u></em>

Explanation:

<u>1) Time it takes Ashley to preprate one bag: </u>

  • 2/3 min

<u>2) Time it takes each friend of Ashley: 75% more than 2/3 min</u>

  • 75% × 2/3 min = 0.75 × 2/3 min = 3/4 × 2/3 min= 2/4 min = 1/2 min = 0.5 min
  • 2/3 min + 1/2 min = 7/6 min

<u>3) Time it takes Ashley and the 4 friends working along to prepare one bag:</u>

  • Convert each time into a rate, since you can set that the total rate of Ashley along with her four friends is equal to the sum of each rate:

  • Rate of Ashley: 1 bag / (2/3) min = 3/2 bag/min

  • Rate of each friend: 1 bag / (7/6) min = 6/7 bag/min

  • Rate of Ashley and 4 friends = 3/2 bag/min + 4 × 6/7 bag/min = (3/2 +24/7) bag/min = 69/14 bag/min

<u>4) Time of prepare 1575 bags of samples:</u>

  • time = number of bags / number of bags per min = 1,575 bags / (69/14) bags/min = 319.56 min

<u>5) Convert minutes to hours:</u>

  • 356.56 min × 1 hour / 60 min = 5.3 hours
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