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Sedbober [7]
3 years ago
9

Evaluate 16 - 4 ÷ 4 a 3b 2c 5d 15

Mathematics
2 answers:
Tasya [4]3 years ago
6 0
Your answer is d 15 hope this is helpful
Alenkasestr [34]3 years ago
4 0
The answer is D. 15 plz give me brainliest answer
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this picture represents 1-4 of the distance from maria house to the park which represents the whole distance?
saveliy_v [14]
There is no picture provided sorry.
4 0
2 years ago
If i can get 2 Amy's organic soup for $4 how much would it be for 1 Amy's organic soup?
Rudiy27

Answer: $2

Step-by-step explanation:

just do 4 divided by 2 and your answer is 2

4 0
3 years ago
Read 2 more answers
Find the values of λ for which the determinant is zero.
elena55 [62]

Answer:

Determinant are special number that can only be defined for square matrices.

Step-by-step explanation:

Determinant are particularly important for analysis. The inverse of a matrix exist, if the determinant is not equal to zero.

How to find determinant

For a 2×2 matrix

det ( \left[\begin{array}{cc}x&y\\a&z\end{array}\right] ) = xz-ay

For a 3×3 matrix

we first decompose it to 2×2

det (\left[\begin{array}{ccc}k&l&m\\o&p&q\\r&s&t\end{array}\right] )\\\\= k*det(\left[\begin{array}{cc}p&q\\s&t\end{array}\right] ) - l*det(\left[\begin{array}{cc}o&q\\r&t\end{array}\right] ) + m*det(\left[\begin{array}{cc}o&p\\r&s\end{array}\right] ) \\\\=k(pt-sq) - l(ot-rq) + m(os-rp)

Example

Find the values of λ for which the determinant is zero

\left[\begin{array}{ccc}s&-1&0\\-1&s&-1\\0&-1&1\end{array}\right]

det(\left[\begin{array}{ccc}s&-1&0\\-1&s&-1\\0&-1&1\end{array}\right])\\\\= s*det(\left[\begin{array}{cc}s&-1\\-1&1\end{array}\right] ) - (-1)*det(\left[\begin{array}{cc}-1&-1\\0&1\end{array}\right] ) + 0*det(\left[\begin{array}{cc}-1&s\\0&-1\end{array}\right] )\\\\= s(s(1)-(-1*-1)) - (-1)(-1*1 - (-1*0)) + 0\\= s(s - 1)) + 1(-1 + 0) \\=s^{2} -s-1

Equating the determinant to zero

s^{2} -s-1 =0\\

s = \frac{1}{2} * (1 ±5 )

s = 1.61 or -0.61

5 0
3 years ago
Can someone help me with this it's
koban [17]

Answer:

hi

Step-by-step explanation:

hi

8 0
3 years ago
Read 2 more answers
What’s 4x4x2-4 in a fraction over 2
JulijaS [17]

Answer:

it should be 12/2 or 6 i believe

Step-by-step explanation:

4x4 = 8

8x2 = 16

16-4 = 12

8 0
3 years ago
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