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galben [10]
4 years ago
14

Use Gauss-Jordan elimination to solve the following linear system.

Mathematics
1 answer:
Nataliya [291]4 years ago
5 0
C I have done this before
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Your friends know you enjoy music, so they buy you a gift card for $20.00 to a popular online music provider. Each download cost
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0.54. I did it by adding1.39 each time instill I knew that it would not work anymore 
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3 years ago
Which of these expressions is equivalent to 8p3 + 27?
kipiarov [429]

Answer:

Hey there!

(2p - 3)(4p2 + 6p + 9) is equal to 8p^3+27. This is just a sum of cubes!

Let me know if this helps :)

3 0
3 years ago
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Write an equation of the line that passes through a pair of points (-5, -2), (4, 5)
PIT_PIT [208]
To find the equation of a line knowing two points it passes through, we must first find the slope and then substitute the x and y values to figure out the y intercept. 

First thing is to find the slope using the formula m = Δy ÷ Δx
m = 5 - (-2) ÷ 4 - (-5)

Now we simplify 
m = 7 ÷ 9 

Our equation so far is y = 7/9x + b. Now we can substitute the values of x and y from a point to figure out the answer. The equation here uses the point (4,5)

5 = 7/9 · 4 + b

Get b on one side
5 - 28/9 = b

Simplify
b = 1 + 8/9

That makes the equation of the line y = 7/9x + (1 + 8/9)
8 0
4 years ago
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Renting a car costs $30 per day, or $600 per month. Renting daily is cheaper for a few days, but after how many days are the two
kicyunya [14]

Answer:

20 days

Step-by-step explanation:

Renting a car costs $30 per day.

y = 30x

Renting a car costs $600 per month

y = 600

Set the two equations equal to each other.

30x = 600

(30x)/30 = (600)/30

x = 20

After 20 days, the two options have an equal cost.

5 0
4 years ago
Which rotation will carry a regular pentagon onto itself?
dezoksy [38]

Answer:

b

Step-by-step explanation:

7 0
3 years ago
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