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Reika [66]
4 years ago
11

The square of the sum of a number and 3 is 16. Find the number.(There are two solutions.)

Mathematics
2 answers:
iren2701 [21]4 years ago
5 0
1,-7 hope this helps
mote1985 [20]4 years ago
3 0

Answer:

1 , -7

Step-by-step explanation:

(x+3)² = 16

then

(x+3)² = 4²

then

|x+3| = 4

then

x+3=4 or x+3= -4

then

x=4-3=1  or  x= -4-3= -7

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I have 30 coins consisting of nickels, and quarters. The total value of the coins is $4.10. How many of each kind do I have?
Vedmedyk [2.9K]
A=#nickels, b=#quarters

5a + 25b = 410 total value

5(a + 5b) = 410

a + 5b = 82

a + b = 30 total no. of coins

subtracting . . . 4b = 52

thus b = 13 and a = 17

13 quarters and 17 nickels = 13*25 + 17*5 = 410 = $4.10
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4 years ago
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FromTheMoon [43]
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3 years ago
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Answer:

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3 0
3 years ago
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5. Last year, Mr. Petersen's rectangular garden had a width of 5 meters and an area of 20 square meters.
11111nata11111 [884]

Answer:

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We know, area of the rectangle is given by the formula:

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Area = 20

We solve for Length:

Area = Length * Width

20 = Length * 5

Length = 20/5 = 4

Last Year Length = 4 meters

Now, this year, the length would be 3 times as long, so new length would be:

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5 0
3 years ago
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Triss [41]

Answer:

2159

Step-by-step explanation:

1440 minutes in a day.

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8 0
3 years ago
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