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Kitty [74]
3 years ago
8

Ashley purchased a prepaid phone card for $25.75. Calls cost 6 cents a minute using this card. The credit, C (in dollars), left

on the card after it is used for x
minutes of calls is given by the following.
C= 25.75 -0.06x
Mathematics
1 answer:
QveST [7]3 years ago
3 0
That would be correct
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Write the expression in radical form
pickupchik [31]
Inside the radical it is (96b)^3

6 0
3 years ago
A clothing store determines that in order to sell x shirts, the price per shirt should be p(x)=100−x dollars. Getting x shirts f
vredina [299]

Answer:

x= -40

Step-by-step explanation:

Cost

C(x)=1,600+20x

P(x)=100-x

Revenue=x*p(x)

=x*(100-x)

=100x-x^2

Cost=Revenue

1600+20x=100x-x^2

1600+20x-100x+x^2=0

1600-80x+x^2=0

Solve using quadratic formula

Formula where

a = 1, b = 80, and c = 1600

x=−b±√b2−4ac/2a

x=−80±√80^2−4(1)(1600) / 2(1)

x=−80±√6400−6400 / 2

x=−80±√0 / 2

The discriminant b^2−4ac=0

so, there is one real root.

x= −80/2

x= -40

5 0
3 years ago
Which rational number equals 0 point 4 with bar over 4?
Ulleksa [173]
<h3>Answer:   4/9</h3>

==============================================

Work Shown:

x = 0.\overline{4}\\\\x = 0.4444\ldots\\\\10x = 4.4444\ldots\\\\10x-x = 4.4444\ldots-0.4444\ldots\\\\9x = 4\\\\x = \frac{4}{9}\\\\\frac{4}{9} = 0.\overline{4}= 0.4444\ldots\\\\

The idea is that when we subtract 10x and x, the infinite decimal pattern (the 4s that go on forever) will cancel. That leads to 9x = 4 which solves to x = 4/9

6 0
3 years ago
if michell had 377.00 in the bank and she want to take 50percent out how much will she have in the bank
MakcuM [25]
You would divide 377 by 2

which would be 188.5
7 0
3 years ago
Read 2 more answers
What is the standard form of 5 and 352,000
Tanya [424]
It is 4009.738/!;7 corrects
7 0
3 years ago
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