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zloy xaker [14]
3 years ago
6

The figure below shows three quadrilaterals on a coordinate grid:

Mathematics
1 answer:
Hatshy [7]3 years ago
3 0

Answer:

im just commenting to get points

Step-by-step explanation:

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An online data base charges $25 an hour during the day and $12.50 an hour at night. If a research company paid $250 for 12 hours
Firdavs [7]

Answer

Find out the  which system of equations could be used to determine the number of hours charged at the day rate (d) and at the night rate (n) .

To proof

As given in the question

Let us assume that the number of hours charged at the day rate = d

Let us assume that the number of hours charged at the night rate = n

An online data base charges $25 an hour during the day and $12.50 an hour at night. If a research company paid $250 for 12 hours of use.

Total working hour in a company including day and night be  12 hours .

than the equation become in the form

d + n = 12

also

An online data base charges $25 an hour during the day

$12.50 an hour at night.

If a research company paid $250 for 12 hours of use.

than the equation becomes

25d + 12.50n = 250

than the two equation are

d + n = 12 , 25d + 12.50n = 250

multiply first by 25 and subtracted  from 25d + 12.50n = 250

25d - 25d + 12.50n - 25n = 250 - 300

12.5 n = 50

n = \frac{50}{12.5}

n = 4hours

put this in the d + n = 12

d + 4 =12

d = 12-4

d = 8 hours

Therefore the number of hours charged at the day rate  is 8 hours  and at the night rate is  4hours .

Hence proved



4 0
3 years ago
Please help quick it is almost due :(
Vaselesa [24]

Answer:

1 and 2

Step-by-step explanation:

8 0
2 years ago
In a certain pond, 50 fish were caught, tagged, and returned to the pond. A few days later, 50 fish were caught again, of which
mario62 [17]

2 out of 50 were tagged.

Divide 2 by 50:

2/50 = 0.4 ( This is 4% of the fish were tagged).

Now divide the number of fish caught by the percentage that were tagged:

50 / 0.04 = 1250

The number of fish in the pond is C. 1250

6 0
3 years ago
Which is greater, 5 centimeters or 5 millimeters???
Cerrena [4.2K]
5 centimiters is greater because 10 milimeters make a centimeter
4 0
2 years ago
Read 2 more answers
Please hurry!
RoseWind [281]

Answer:

BC= 16 cm

CD= Cannot Be Determined.

ED= 10 cm

BE= 14 cm

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
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