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2 years ago

Simplify the expression square root 100 over 49

1 answer:

5 0

Just plug in the square root of 100 in your calculator (10) and then either leave it as 10/49 or simplify it to a decimal...depending on what your teacher is expecting from you.

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2 years ago

What is the answer to 3+x=y

NARA [144]

Answer: x=y-3 or y=3+x

Step-by-step explanation:

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2 years ago

What is the area of a regular hexagon with a side length of 12 cm With process please

ivanzaharov [21]

Look at the picture.

The area of the hexagon is equal six times the area of the equilateral triangle.

The formula of the equilateral triangle with the leg a:

$A_\Delta=\dfrac{a^2\sqrt3}{4}$

Therefore the formula of the area of the hexagon with a side lenght a is:

$A=6\cdot\dfrac{a^2\sqrt3}{4}=\dfrac{3a^2\sqrt3}{2}$

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2 years ago

Please help with this question

lianna [129]

Answer:

Step-by-step explanation:

The first equation would have to have a y-intercept of 4, and the second equation would have to have a y-intercept of -1.

-hope it helps

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2 years ago

Read 2 more answers

If A2 = I, where I is the identity matrix, which matrix correctly represents matrix A?

natali 33 [55]

We know that $\boldsymbol{A^2}=\boldsymbol{A\times A}$

We also know that $\boldsymbol{I}=\begin{bmatrix} 1 &0 \\ 0&1 \end{bmatrix}$

Now, it has been given to us that $\boldsymbol{A^2}=\boldsymbol{I}$

Therefore, we will have to find the correct $\boldsymbol{A}$ from the given options and we find that when:

$\boldsymbol{A}=\begin{bmatrix} 3 &-2 \\ 4&-3 \end{bmatrix}$

then $\boldsymbol{A^2}=\boldsymbol{A\times A}=\begin{bmatrix} 3 &-2 \\ 4&-3 \end{bmatrix}\times \begin{bmatrix} 3 &-2 \\ 4&-3 \end{bmatrix}=\begin{bmatrix} 1 & 0\\ 0 & 1 \end{bmatrix}$

Therefore, from the above given options, Option C is the correct option.

Therefore, $\boldsymbol{A}=\begin{bmatrix} 3 & -2\\ 4 & -3 \end{bmatrix}$ is the correct answer.

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3 years ago