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alexandr1967 [171]
3 years ago
10

I need help pllllllllllllllllllllzzzzz

Mathematics
2 answers:
aniked [119]3 years ago
5 0
E: two and two fifths 
F: two and 2 fifths 
G:three and 4 fifths 
H:3 and one half
LenKa [72]3 years ago
5 0
I was gonna do the same as Veronica
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Zane performs the elementary row operation represented by R2-½R1 on matrix A.​
UkoKoshka [18]

Answer:

[2 5 0]

[-7 -11/2 12]

Step-by-step explanation:

We want to perform elementary row operation represented by R2 - ½R1 on matrix A in the figure attached.

Now, matrix A is given as;

[2 5 0]

[-6 -3 12]

Now, R1 is row 1 = [2 5 0]

R2 is row 2 = [-6 -3 12]

Thus, R2 - ½R1 = [-6 -3 12] - ½[2 5 0]

This gives;

[-6 -3 12] - [1 5/2 0] = [-7 -11/2 12]

Now,[-7 -11/2 12] will be the new row 2 since it's just an elementary row operation we did on the Matrix A.

Thus, the new matrix is now;

[2 5 0]

[-7 -11/2 12]

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3 years ago
Read 2 more answers
What is the area of a rectangle with length (3^2)^2 meters and width of 3^2 meters?
Luda [366]

Answer:

729m^2

Step-by-step explanation:

Area of rectangle  = length x width

From the question, we know that length = 3^2^2 = 81 ( three squared is 9. Nine squared is 81)

width = 3^2 = 9.

Now for the area: length x width = 81 x 9 = 729m^2.

Please mark brainiest.

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2 years ago
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Which package has the lowest cost per ounce of rice ( 12, 18, 7)
Katarina [22]
The package with the most low cost is 7.
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3 years ago
The cost of labor for servicing cars at B&B Automotive is $50 for each whole hour or for any fraction of an hour. There is a
Masja [62]

Answer:

<h2>d. $250</h2>

Step-by-step explanation:

We can use the equation of a straight line to model the cost of servicing the car.

let the cost be y and the number of hours be x

and the charge per hour is m

y=mx+c

y=50x+25

given that the time is 3.45 hours it is assumed that the charge is for 4 hours since for a fraction of 0.45 hours we are charged $50

y=50(4)+25

y=200+25

y=$225

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3 years ago
Bob paid $54 for shoes if they were on sale for 10% off what was the original price
PIT_PIT [208]
Bob paid $48.6 that’s the total
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2 years ago
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