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3 years ago

What is sin 30? Use the triangle below as a guide if you need to.

Mathematics

1 answer:

leonid [27]3 years ago

5 0

sin (30) =1/2

Answer: 1/2

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melomori [17]

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Step-by-step explanation:

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3 years ago

Which two expressions could be used to solve this problem?

irakobra [83]

I think the answer would most likely be C.

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4 years ago

What’s the answer to this equation?

Tresset [83]

Answer:

Part A) The graph in the attached figure

Part B) see the explanation

Step-by-step explanation:

Part A) Graph the function

we have the quadratic function

$y=3x^2-12x-36$

This is a vertical parabola open upward

The vertex is a minimum

using a graphing tool

The graph in the attached figure

Part B) What are the values of a, b and c?

we know that

The values of a and b represent the x-intercepts of the quadratic equation

The x-intercepts are

(-2,0) and (6,0)

$a=-2\\b=6$

Find the value of c

we know that

The x-coordinate of the vertex in a vertical parabola is equal to the midpoint of the roots

The value of c is equal to

$c=\frac{a+b}{2}$

substitute the given values

$c=\frac{-2+6}{2}=2$

see the attached figure

7 0

3 years ago

Is it possible for a 5×5 matrix to be invertible when its columns do not span set of real numbers R^5? Why or why not? Select

xeze [42]

Answer:

The correct answer is A..

Step-by-step explanation:

From the Invertible Matrix Theorem (IMT) we have a set of equivalent conditions to determine if a square matrix is invertible or not. In particular, it says that a square matrix of dimension tex]n\times n[/tex] is invertible if and only if, its columns span the vector space tex]R^n[/tex].

In the particular case of this exercise we have a matrix of dimension tex]5\times 5[/tex]. So, by the Invertible Matrix Theorem its columns must span the vector space tex]R^5[/tex]. Now, according to the statement of the exercise this condition does not hold. Hence, the given matrix cannot be invertible.

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3 years ago

What’s the area of this parrelogram? (There is a photo!)<br><br> Please help me!

Aliun [14]

It’s base * height so 28

4 0

3 years ago