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9966 [12]
3 years ago
10

Henry buys an item for $4.23. He gives the cashier a $20 bill. How much money should Henry get back?

Mathematics
1 answer:
N76 [4]3 years ago
7 0

Answer:

Henry will get $15.77 back.

Step-by-step explanation:

20 - 4.23 = 15.77

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How many solutions does the system have? y = -2x-4 \\\\ y = 3x+3
lakkis [162]

Answer:

The system has one solution.

Step-by-step explanation:

We have two equations:

y = -2x - 4

y = 3x + 3

Equalling them:

y = y

-2x - 4 = 3x + 3

5x = -7

x = -\frac{7}{5}

And

y = 3x + 3 = 3(-\frac{7}{5}) + 3 = \frac{-21}{5} + 3 = \frac{-21}{5} + \frac{15}{5} = -\frac{6}{5}

Replacing in the other equation we should get the same result.

y = -2x - 4 = -2(-\frac{7}{5}) - 4 = \frac{14}[5} - 4 = \frac{14}{4} - \frac{20}{5} = -\frac{6}{5}

So the system has one solution.

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Answer: C

Step-by-step explanation:

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PilotLPTM [1.2K]
Slope: 3, y-intercept: 4, equation: y = 3x + 4
6 0
3 years ago
A film ends at 1.05 a.m and lasts for 1 hour 45 min. At what time does the film start?
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u will have to add the two

1hr 45mins + 1:05

remember add hrs to hrs and minutes to minutes

1+1 =2

45+5=50

which means the movie started at 2:50 am

and to verify ur answer subtract 2:50 from 1:05

= 1hrs 45 mins

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6 0
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If a1 = 9 and and an-1 - 5 then find the value of a6.
SCORPION-xisa [38]

Answer:

a1 = 6 and an = an-1 - 5

a2 = a2-1 - 5 = a1 - 5 = 1

a3 = a3-1 - 5 = a2 - 5 = -4, etc

Step-by-step explanation:

8 0
3 years ago
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