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2 years ago

Please answer this for me! 8 (6 - 4) = 12 =

Mathematics

1 answer:

Snezhnost [94]2 years ago

3 0

Answer:

Not a true statement.

Step-by-step explanation:

8(6-4)=12

8(2)=16, not 12.

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Answer these below. its for algerbra math

pantera1 [17]

Answer:

lin

Step-by-step explanation:

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2 years ago

What is the length of BC

elena55 [62]

Answer:

BC = 2

Step-by-step explanation:

We first need to use triangle BAD to find BD,

BD is the hypotenuse, so use pythagorean theorem...

(√23)² + (√13)² = (BD)²

23 + 13 = (BD)²

36 = (BD)²

6 = BD

Now BD is the hypotenuse of triangle BCD, so use pythagorean theorem agian to find BC

(4√2)² + (BC)² = 6²

32 + (BC)² = 36

(BC)² = 4

BC = 2

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3 years ago

Write y=-3x^2-18x-31 in vertex form

Ahat [919]

-3(x+(3))^2-4 is the answer

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2 years ago

Read 2 more answers

Serena wants to create snack bags for a trip she's going on she has 6 granola bars and 10 piecies of dried fruit whats the great

Eduardwww [97]

Answer:

6, if she wants one granola bar and one dried fruit in each bag

Step-by-step explanation:

4 0

3 years ago

The notation Ak meas the matrix A Multiplied with itself k times (a) For the 2×2 identity matrix I, show that I2 =I (b)For the n

djverab [1.8K]

Answer:

Entries of I^k are are also identity elements.

Step-by-step explanation:

a) For the 2×2 identity matrix I, show that I² =I

$I^{2}=\left[\begin{array}{cc}1&0\\0&1\end{array}\right] \times \left[\begin{array}{cc}1&0\\0&1\end{array}\right] \\\\=\left[\begin{array}{cc}1\times 1+0\times 0&1\times 0+0\times 1\\0\times 1+1\times 0&0\times 0+1\times1\end{array}\right] \\\\=\left[\begin{array}{cc}1&0\\0&1\end{array}\right]$

Hence proved I² =I

b) For the n×n identity matrix I, show that I² =I

n×n identity matrix is as shown in figure

Elements of identity matrix are

$\delta I_{ij}=1\quad if\quad i=j\\\delta I_{ij}=0\quad if\quad i\ne j\\$

As square of 1 is equal to 1 so for n×n identity matrix I, I² =I

As mentioned above

$\delta I_{ij}=1\quad if\quad i=j\\\delta I_{ij}=0\quad if\quad i\ne j\\$

Any power of 1 is equal to 1 so kth power of 1 is also 1. According to this Ik=I

6 0

2 years ago