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d1i1m1o1n [39]
3 years ago
9

GIVING BRAINLIEST! Please help

Mathematics
1 answer:
MariettaO [177]3 years ago
4 0

Answer:

  the marked answer is correct

Step-by-step explanation:

The desired end result is an identity matrix in the first three columns. The diagonal values are 1, as needed, so what remains is to eliminate the off-diagonal values. In row 2 that can be done by adding row 3 to it.

The next step should be to add rows 2 and 3 and replace row 2 with that sum.

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what geographic feature in north africa served as barrier separating it from the rest of the continent?
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How many solutions does this system have?​
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One

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Find the indicated sum of the geometric series. ∑6k=1−3(2)k−1
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3 years ago
The probability of drawing a black marble from a bag is 1/2, and the probability of drawing a white marble from the same bag is
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<span>W = event where white marble is drawn 
B = event where black marble is drawn 

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Use the rule to get 

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6 0
2 years ago
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-26 times a number minus 22 is equal to 90 less than the number.
Novay_Z [31]

-26n -22= n - 90

-26 times a number: -26n

minus 22: -22

equal: =

90 less than a number: n - 90

Solving the Equation:

Move n to the left side of the equal sign (which becomes -n) in order to combine like terms:

-26n-n-22= -90

Move -22 to the right side of the equal sign which becomes +22

-26n-n=-90+22

solve both sides; -26n-n= -27n and -90+ 22= -78

-27n=-78

n= 2.888888

5 0
2 years ago
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