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DochEvi [55]
3 years ago
15

Solve the system of equations using matrices. Use Gaussian elimination with back-substitution.

Mathematics
1 answer:
vaieri [72.5K]3 years ago
5 0

Answer:

try find apps about answering this question im not sure about this one :)

Step-by-step explanation:

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A commercial airplane flying with a speed of 700 mi/h is detected 1000 miles away with a radar. Half an hour later an intercepto
wlad13 [49]
You can solve multiplying
7 0
3 years ago
Which point is located at 5_2​
alexdok [17]

Hey there!

Point D is located at point (5, -2)

In coordinates, the first number represents the x-coordinate, and the second number represents the y-coordinate. (TIP: YOU MUST START AT THE ORIGIN, OR (0, 0). In the x-coordinate, you go left/right that number of spaces, left for negative and right for positive. For the y-coordinate, you go up/down that number of spaces, down for negative and up for positive. This means that the point (5, -2) is 5 units right and 2 units down, which lands on point D.

Hope it helps and have an amazing day!

4 0
3 years ago
A collection of coins contains a total of sixteen dimes and quarters. It is worth $2.20 in all. How many dimes are in the collec
grin007 [14]

9514 1404 393

Answer:

  12 dimes

Step-by-step explanation:

Let q represent the number of quarters. Then the number of dimes is 16-q and the total value is ...

  0.25q +0.10(16 -q) = 2.20

  0.15q +1.60 = 2.20 . . . . . . . simplify

  0.15q = 0.60 . . . . . . . . subtract 1.60

  q = 4 . . . . . . . . . . . divide by 0.15

  16-q = 12

There are 12 dimes in the collection.

5 0
3 years ago
How do this problem?
Naily [24]
1/5(3x - 0.5) + 1/6= x/5 + 0.5
change decimals to fractions (0.5=1/2)

1/5(3x - 1/2) + 1/6= x/5 + 1/2
multiply 1/5 by each term in parentheses

(1/5*3x) + (1/5*-1/2) + 1/6= x/5 + 1/2
multiply within parentheses

3x/5 - 1/10 + 1/6= x/5 + 1/2

need a common denominator; all denominators go into 30

18x/30 - 3/30 + 5/30= 6x/30 + 15/30
combine like terms

18x/30 + 2/30= 6x/30 + 15/30
subtract 6x/30 from both sides

12x/30 + 2/30= 15/30
subtract 2/30 from both sides

12x/30= 13/30
multiply both sides by 30 to eliminate fractions

(12x/30)(30)= (13/30)(30)
12x= 13
divide both sides by 12

x= 13/12 or 1.083333


ANSWER: x= 13/12 or 1.083333

Hope this helps! :)
7 0
3 years ago
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A 4cm ladder rest against a vertival wall with it's foot 2 m from the wall. How far up the wall does the ladder reach?
igomit [66]
Hi I got ur answer what is ur name
7 0
3 years ago
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