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alukav5142 [94]
2 years ago
13

Anne wants to take her friends to a roller rink. The employee she spoke to ahead of time said the total cost for all 9 people in

the group would be $81. This includes an entrance ticket and a $3 skate rental fee for each person.
If t represents the entrance ticket, explain what does this equation mean?
9(t + 3) = 81

How much is the entrance ticket?
Mathematics
2 answers:
Hoochie [10]2 years ago
7 0

Answer:

I think the answers should be 6

topjm [15]2 years ago
4 0

Answer:

the equation means the total cost of a ticket t and $3 skate rental for nine people is 81 dollars

entrance ticket costs $6

Step-by-step explanation:

solve the equation for t to get the ticket cost

9(t+3)=81

divide by 9 so t+3=9

minus 3 so t=6

that means the ticket costs 6 dollars

Hope this helps! :)

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Scilla [17]

Answer:

$493.75

Step-by-step explanation:

  1. 25 × 19.75 = $493.75

I hope this helps!

6 0
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Read 2 more answers
LAY
marta [7]

Answer:

A

Step-by-step explanation:

how long is the ball in the air ?

that is the same as asking : after how many seconds will the ball hit the ground (= reach the height of 0) ?

so, that means we need to find the zero solution of h(t).

at what t is h(t) = 0 ?

when at least one of the factors is 0 :

2(-2 - 4t)(2t - 5)

we have 3 factors

2 : can never be 0.

(-2 -4t) : can only be 0 for negative t, which does not make sense in our scenario (we cannot go back in time, only forward).

(2t - 5) : is 0 when 2t = 5 or t = 2.5

so, A is the right answer.

FYI : the starting height (on the hill) is given by t = 0 :

2(-2 - 0)(0 - 5) = 2×-2×-5 = 20 ft

3 0
2 years ago
Which transformation could NOT be used to prove that two circles are congruent to one another?
EleoNora [17]

Answer: D

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6 0
2 years ago
Find the polynomial of lowest degree with only real coefficients and having the given zeros. -7i and square root of 2
mario62 [17]

Answer:

x³ - (√2)x² + 49x - 49√2

Step-by-step explanation:

If one root is -7i, another root must be 7i.  You can't just have one root with i.  The other roos is √2, so there are 3 roots.  

x = -7i       is one root,

   (x + 7i) = 0    is the factor

x = 7i       is one root

  (x - 7i) = 0     is the factor

x = √2      is one root

    (x - √2) = 0   is the factor

So the factors are...

(x + 7i)(x - 7i)(x - √2) = 0

Multiply these out to find the polynomial...

(x + 7i)(x - 7i) =  x² + 7i - 7i - 49i²

Which simplifies to

  x² - 49i²        since i² = -1 , we have

    x² - 49(-1)  

 

      x² + 49

Now we have...

(x² + 49)(x - √2) = 0

Now foil this out...

 x²(x) - x²(-√2) + 49(x) + 49(-√2) = 0

     x³ + (√2)x² + 49x - 49√2

7 0
3 years ago
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