4 years ago

Which product is negative?

1 answer:

6 0

4•(-9)•(-3)•(-1) is negative. Here's how:

4•(-9)•(-3)•(-1)
(-36)•(3) = -108

-2•(-7)•12•(4)
14•48 = 672

-6•(-7)•(-8)•0
42•(0) = 0

-3•(-2)•(-4)•(-7)
6•28 = 168

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A recipe calls for 2/3 cups of butter to make 2 1/2 cups of sauce

aksik [14]

Answer:

Step-by-step explanation:

THE ANSWER IS C

3 0

3 years ago

These two matrices are unable to be added due to dimensional mismatch? True, false, both, unable to answer with the info given

Hoochie [10]

Answer:

false

Step-by-step explanation:

$\left[\begin{array}{c}-4\end{array}\right] +\left[\begin{array}{c}7\end{array}\right] =\left[\begin{array}{c}3\end{array}\right]$

Both of the matrices are 1 x 1 ("one by one"), so they can be added to produce a 1 x 1 matrix.

To add (or subtract) two matrices, they must be the same size.

(m x n) + (m x n) = (m x n)

m x n means a matrix has m rows and n columns. Dimensions are always named in that order: rows, then columns.

6 0

3 years ago

Find the vertices and foci of the hyperbola with equation x squared over nine minus y squared over sixteen = 1.

Arisa [49]

<em>Standard equation of hyperbola is </em> $\frac{x^{2} }{ a^{2} } - \frac{ y^{2} }{ b^{2} } = 1$ .

<em>Comparing given info with standard equation, we get
</em>a(vertices)= +3 and -3
foci = $\sqrt{ a^{2} + b^{2} } = \sqrt{9+16} = \sqrt{25} =5$ .