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3 years ago

Onii-Chan help me whit 5-8

Mathematics

1 answer:

lina2011 [118]3 years ago

4 0

The answer to 5-8 is 3

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D Identify the coordinates of point E. A 1-2-3) B (-2.3) C (3, 2) D (-3.-2

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C I believe is true :))

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3 years ago

There are 25 prime numbers between 1 and 100. There are 46 prime numbers between 1 and 200. Which situation is more likely? Expl

Alekssandra [29.7K]

Answer:

One.

Step-by-step explanation:

There is a 25% chance of situation one happening.

$\frac{prime}{total} =\frac{25}{100} = 0.25=25$ %

There is a 23% chance of situation two happening.

$\frac{prime}{total} =\frac{46}{200}=0.23=23$ %

Since the chance is two percent bigger from situation one, situation one should be the one that is more likely to happen.

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3 years ago

-x=-y+2 and 3y+4=2x solve using matrices

MissTica

$\begin{cases}-x=-y+2\\3y+4=2x\end{cases}\implies\begin{cases}x-y=-2\\2x-3y=4\end{cases}$

In matrix form, this is

$\begin{bmatrix}1&-1\\2&-3\end{bmatrix}\begin{bmatrix}x\\y\end{bmatrix}=\begin{bmatrix}-2\\4\end{bmatrix}$

The coefficient matrix has determinant

$\begin{vmatrix}1&-1\\2&-3\end{vmatrix}=-3+2=-1\neq0$

so it has an inverse, which is

$\begin{bmatrix}1&-1\\2&-3\end{bmatrix}^{-1}=\begin{bmatrix}3&-1\\2&-1\end{bmatrix}$

Multiply both sides by the inverse matrix:

$\begin{bmatrix}3&-1\\2&-1\end{bmatrix}\begin{bmatrix}1&-1\\2&-3\end{bmatrix}\begin{bmatrix}x\\y\end{bmatrix}=\begin{bmatrix}3&-1\\2&-1\end{bmatrix}\begin{bmatrix}-2\\4\end{bmatrix}$

$\implies\begin{bmatrix}x\\y\end{bmatrix}=\begin{bmatrix}-10\\-8\end{bmatrix}$

so that $x=-10$ and $y=-8$ .

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3 years ago

I need help!!!!!! Help Needed!!!!

tatiyna

help with what? be sure to put everything you need to say into a question

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3 years ago

A piece rate worker is paid _____.

Alchen [17]

Answer:

The answer is on the quantity they produce per hour.

Step-by-step explanation:

If they produce more, they will be paid more, based on the rate per finished item

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2 years ago

Read 2 more answers