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3 years ago

25. Which of the following is equivalent to: 7 2 x 7-4

Mathematics

1 answer:

MissTica3 years ago

3 0

Answer:

It's D or 1/7^2

$\frac{1}{7^{2} }$

Step-by-step explanation:

They both equal 1/49

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Find the given elements of matrix D<br> Please help!!!

TEA [102]

Answer:

Element wise subtraction.

Step-by-step explanation:

Matrix Subtraction is done element wise.

Therefore, D = $\left[ {\begin{array}{ccc} 3 & 1 & 0 \\ -1 & 2 & 4 \\9 & 7 & -2 \end{array} } \right]$ - $\left[ {\begin{array}{ccc} 5 & 2 & -4\\ 1 & 12 & 3 \\ 11 & 3 & -2 \end{array} } \right]$

This becomes:

$D = \left[ {\begin{array}{ccc} -2 & -1 & 4 \\ -2 & -10 & 1 \\ -2 & 4 & 0 \end{array} } \right]$

Now, $d_{11} = -2$

$d_{12} = -1$

$d_{13} = 4$

$d_{21} = -2$

$d_{22} = -10$

$d_{31} = -2$

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4 years ago

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Which expression represent the approximate length of BC HEEEEELLLLPPP!!!

Bumek [7]

Answer:

Step-by-step explanation:

Using the Sine rule in Δ ABC

$\frac{sinA}{BC}$ = $\frac{sin38}{AB}$ , substitute values

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BC sin38° = 3 sin66° ( divide both sides by sin38° )

BC = $\frac{3sin66}{sin38}$ → A

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3 years ago

Suppose you are going to graph the data in the table below. What data should be represented on each axis, and what should the in

Korvikt [17]

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You always want the constant numbers such as time on the x-axis
And since your y values are all large numbers and multiples of 5, it makes sense to use increments of 5</span>

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3 years ago

Introduction to Functions Closure Property. 9th grade Algebra 1.

Dennis_Churaev [7]

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3 years ago

Match the like terms please!! giving brainliest to the right answer

evablogger [386]

Answer:

5x=256x

5xy= -xy

(3rd) -2x^2y=4x^2y(1st)

5y=3y

(5th) x^2y^2=(3rd) 2x^2y^2

(6th) 3y^2= 5y^2(5th)

Step-by-step explanation:

Hope you understand. Please mark as the brainliest.

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3 years ago