2 years ago

8.A book is 320 pages long and has an

Mathematics

2 answers:

Elan Coil [88]2 years ago

8 0

Answer:

its 15460!

Step-by-step explanation:

padilas [110]2 years ago

7 0

answer this should be it 15460

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The product of a number four is at most negative 10

soldier1979 [14.2K]

Don't you mean at least. Ha ha ha

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2 years ago

Please Help!!<br><br> Use the graph of the equation to solve: -2x - 5 = 3

abruzzese [7]

Answer:

x = -4

Step-by-step explanation:

-2x - 5 = 3

Add 5 to both sides

-2x - 5 + 5 = 3 + 5

Simplify

-2x = 8

Divide both sides by -2

-2x/-2 = 8/-2

Simplify

x = -4

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3 years ago

Josie is training for a race. The ratio of the number of minutes she runs to the number of miles she runs is 24 to 3. She plans

Elanso [62]

Answer:

Step-by-step explanation:

if 3 miles = 24 minutes, then 1 mile = 24/3 = 8 minutes

therefore 10 miles = 8 x 10 = 80 minutes

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3 years ago

Read 2 more answers

-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

1. The playground at a park is shaped like a trapezoid. The dimensions of the playground are

slavikrds [6]

860 ft that’s the answer

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3 years ago