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kramer
2 years ago
3

When Lydia performed an operation on the matrix below, she forgot to include one element.

Mathematics
1 answer:
Temka [501]2 years ago
8 0

The operation performed by her on the given matrix is a row operation.

She multiplied the first row by 5 and then subtracted it from the second row to obtain the resultant matrix.

It can be verified by seeing that the other elements of the second row (of new matrix) follow this row operation.

5-1*5=0\\\\-1-3*5=-16\\\\-11-5*5=-36

So, we have that,

b=3-2*5\\\\b=3-10\\\\b=-7

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The equation   can be used to determine the number of centimeters, y, in a given number of inches, x. The equation was used to f
Vitek1552 [10]

Answer:

25 Inches

Step-by-step explanation:

Given the table:

\left|\begin{array}{c|c|c|c|c}\text{Number of Inches}&2&10&&40\\\text{Number of Centimeters}&5.08&25.04&63.5&101.6\end{array}\right|

We want to determine the missing value on the table.

Let the missing value be x.

1 inch = 2.54 cm

x inch = 63.5

Expressing the above as a ratio

\dfrac{1}{x}=\dfrac{2.54}{63.5}  \\$Cross Multiply$\\2.54x=63.5\\$Divide both sides by 2.54$\\x=25 \:Inches

Therefore, the missing value is 25.

7 0
2 years ago
Read 2 more answers
Write H(t) for the amount spent in the United States on health care in year t, where t is measured in years since 2000. The rate
Kisachek [45]

Answer:

Check the explanation

Step-by-step explanation:

Write H(t) for the total sum spent in the United States on health care in year t, where t is measured in years since 2000.

The rate of increase of H(t) was projected to rise from $100 billion per year in 2000 to approximately $190 billion per year in 2010

(a) Find a linear model for the rate of change H'(t)

Slope of line is (190-100)/(2010-2000) = 90/10 = 9 billion dollars per yr

H'(t) - 190 = 9 (t-10) =

H'(t) = 9t + 100   billions dollars per year

(b) Given that $1,300 billion was spent on health care in the United States in 2000, find the function H(t).

H'(t) = 9t + 100   billions dollars per year   TAKING INTEGRATION..

H(t) = 9t^2/2 + 100t + C given H(0) = 1300

H(0) = 1300 = C

H(t) = 9t^2/2 + 100t + 1300 billion dollars.

5 0
2 years ago
(3x³ + 2x - 3) - (4x³ - x² + x)<br> please just give the answer
natka813 [3]

Answer:

- x³ + x² + x - 3

Step-by-step explanation:

(3x³ + 2x - 3) - (4x³ - x² + x)

3x³ + 2x - 3 - 4x³ + x² - x

3x³ - 4x³ + x² - x + 2x - 3

- x³ + x² + x - 3

<u>-TheUnknown</u><u>Scientist</u>

4 0
2 years ago
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Which explains how to find the quotient of the division below? - 3 1/3 divided by 4/9 Write Negative 3 and one-third as Negative
makvit [3.9K]

Answer:

its B

Step-by-step explanation:

cuz -3 1/3 would be turned into -10/3 by multiplying 3*3 which will give u 9 and adding 1 which is 10 then u put the 10 on top and keep the 3 as bottom.

and then flip the 4/9 which will turn into 9/4 so now u can multiple intead of divide

-10/3 * 9/4 and then youll get ur answer.

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The new price would be $198.4

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