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3 years ago

What is the place value of 4.282 rounded by 2

Mathematics

1 answer:

Sauron [17]3 years ago

5 0

4.282 is rounded to 4.300

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Which one of the following is

34kurt

Answer:

3 + b

Step-by-step explanation:

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2 years ago

Three years ago a school spent four hundred thirty-eight thousand, seven hundred sixty-nine dollars and seventy-nine cents build

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2 years ago

If i= the square root of -1, what is the value of i to the 3rd power

serious [3.7K]

I^3 = i^(2+1) = i^2 x i -1 x i = -i

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3 years ago

Use a matrix to solve the system:

Romashka-Z-Leto [24]

Answer:

(2.83 , 1 , 4)

Step-by-step explanation:

$2x+2y-z=4\\4x-2y-2z=2\\3x+3y-4z=-4\\$

Rewrite these equations in matrix form

$\left[\begin{array}{ccc}2&2&-1\\4&-2&-2\\3&3&-4\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right]=\left[\begin{array}{ccc}4\\2\\-4\end{array}\right] \\$

we can write it like this,

$AX=B\\X=A^{-1}B$

so to solve it we need to take the inverse of the 3 x 3 matrix A then multiply it by B.

We get the inverse of matrix A,

$A^{-1}=\left[\begin{array}{ccc}7/15&1/6&-1/5\\1/3&-1/6&0\\3/5&0&-2/5\end{array}\right] \\$

now multiply the matrix with B

$X=A^{-1}B\\\\\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}7/15&1/6&-1/5\\1/3&-1/6&0\\3/5&0&-2/5\end{array}\right]\left[\begin{array}{ccc}4\\2\\-4\end{array}\right] \\\\\\\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}2.83\\1\\4\end{array}\right] \\$

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2 years ago

1). −3p + 6 p =

Katena32 [7]

1.) 3p
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7. 9-4r
8. 4b+2
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11. 35n+45
12. -82v
13. 38n
14. 38x

4 0

2 years ago

Read 2 more answers