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AleksandrR [38]
3 years ago
9

Charlie needs to rent a car. Company A charges a rate of $40 per day,d, and company B charges a $60 fee plus $20 per day. For wh

at number of days is the cost the same?
Mathematics
1 answer:
Taya2010 [7]3 years ago
8 0

Answer:

  3

Step-by-step explanation:

Since d represents the number of days the car is rented, Company A charges ...

  40d

Company B charges ...

  60 +20d

We want to find the value of d that makes these charges be the same value:

  40d = 60 +20d

  2d = 3 +d . . . . . . . divide by 20

  d = 3 . . . . . . . . . . . subtract d

The cost is the same for 3 days.

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Solve −2x2 +3x − 9 = 0. (2 points)
nadya68 [22]

Answer:

Option A

Step-by-step explanation:

We have to find the solution of -2x^{2}+3x-9=0

By quadratic formula

x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}

=\frac{-3\pm \sqrt{(3)^{2}-4(-2)(-9)}}{2(-2)}

=\frac{-3\pm \sqrt{9-72}}{-4}

=\frac{3\mp \sqrt{-63}}{4}

\frac{3\mp 3\sqrt{-7}}{4}=[\frac{3\mp 3i\sqrt{7}}{4}]

Option A is the answer.

3 0
3 years ago
Read 2 more answers
What is the
Natalija [7]
B it seems logical I guess
3 0
3 years ago
Read 2 more answers
When completing an online shopping transaction, a typical shopper takes 9 seconds to select each product and another 8 seconds t
katrin [286]

Answer:

In 26 seconds to complete a transaction, 2 products are being purchased.

Step-by-step explanation:

Here, time taken to select 1 item  = 9 seconds

Time taken in all to check out = 8 seconds

Here, time taken to shop = 26 seconds

Now as check out process takes 8 seconds , so the

Time left to ACTUALLY SHOP =  Total Time  - Time Used to check out

                                                   = 26 seconds = 8 seconds = 18 seconds

Shopping of 1 item = 8 seconds

Shopping of 2 items  = 2 x ( Time taken in 1 item) = 2 x  9 = 18 seconds

So, in 18 seconds, 2 clothing item can be selected.

Hence,in 26 seconds to complete a transaction, 2 products are being purchased.

3 0
3 years ago
2. Con los siguientes vectores realice las operaciones expresadas con su gráfica ( polígono
Sindrei [870]

Gánster:

polígono

de nada

3 0
3 years ago
Please i need your help
Scrat [10]

Answer:

1. YES, BECAUSE WITH TAX, IT WOULD BE 9.88

2. MOVE THE DECIMAL OVER TO THE LEFT BY ONE PLACE

ANSWER IS 5.356

Step-by-step explanation:

IF TAX IS 13% YOU MULTIPLE 8.75 BY 1.13. YOU GET 1.13 FROM THE ORIGINAL PRICE PLUS .13 IN TAX.

6 0
2 years ago
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