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3 years ago

Select the quotient. Mark all that apply. 2÷629 A. 213 B. 314 R1 C. 314.5 D. 345

Mathematics

1 answer:

marin [14]3 years ago

4 0

Answer:

Step-by-step explanation:

629 divided by 2 equals 314.5

The answer is C

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How many fourteenths are in 2/7

yarga [219]

Answer:

I have no idea, but I think there are two fourteenths in 2/7.

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3 years ago

What is the inverse of

Paladinen [302]

Answer:

$A^{-1} = \frac{1}{66} \left[\begin{array}{cc}-2&-5\\6&-18\end{array}\right]$

Step-by-step explanation:

Given

$A = \left[\begin{array}{cc}-18&5\\-6&-2\end{array}\right]$

Required

Determine the inverse

A matric is of the form:

$A = \left[\begin{array}{cc}a&b\\c&d\end{array}\right]$

First, we need to calculate the determinant (D)

$D = a * d - b * c$

By comparison, we have:

$D = (-18 * -2) - (5 * -6)$

$D = (36) - (-30)$

$D = 36 +30$

$D = 66$

The inverse is then represented as:

$A^{-1} = \frac{1}{D} \left[\begin{array}{cc}d&-b\\-c&a\end{array}\right]$

This gives:

$A^{-1} = \frac{1}{66} \left[\begin{array}{cc}-2&-5\\6&-18\end{array}\right]$

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2 years ago

"Ready

Ratling [72]

Answer:

sqrt(x^2+y^2)

Step-by-step explanation:

x^2+y^2=z^2 (Pythagorean theorem)

sqrt(x^2+y^2)=sqrt(z^2)

sqrt(x^2+y^2)=z

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2 years ago

A farmer wants to put a fence around a garden in the shape of a square. The fence posts are placed every 2 meters. One side of t

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Answer:

The farmer would need 80 posts.

Step-by-step explanation:

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3 years ago

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Vlad1618 [11]

I think the answer is x=2

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3 years ago