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maw [93]
3 years ago
5

What is always true about irrational numbers and rational numbers?

Mathematics
1 answer:
jeyben [28]3 years ago
7 0

Answer:

The sum of a rational number and an irrational number is irrational

Step-by-step explanation:

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a person on a moving sidewalk travels 21 feet in 7 seconds .the moving sidewalk has a length of 180 feet. how long will it take
mario62 [17]
The answer is 59.99 because if you divide 180 by 21 you will get 8.57..... Then you need to multiply 8.57..... by 7 to get 59.99
8 0
2 years ago
What is the area of the following triangle in square meters? Do not round your answer. [Brainliest + 25 PTS. (EACH) + A shoutout
irina1246 [14]

Answer:

What triangle. Ill fix my answer when I have it.

Step-by-step explanation:

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NEED HELP NOW WILL GIVE BRAINLEIST!!!!!!b) Calculate the area of the red triangle to find the area of the garden. Show your work
Arisa [49]

Answer:

Area = 1/2ab sinc

Step-by-step explanation:

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2 years ago
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The base of a solid oblique pyramid is an equilateral triangle with a base edge length of 18 inches What is the height of the tr
ExtremeBDS [4]
The height of the triangular base of the pyramid is calculated through the equation,
                                        h = (cos x)(18 in)
where h is height and x is half of the angle of the triangle. Since the triangle is equilateral, the value of  x is 30°. Substituting,
                                        h = (cos 30°)(18 in)
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Thus, the height of the base is approximately 15.59 inches. 
6 0
3 years ago
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What is the determinant of the coefficient matrix of this system? <br> 4x-3y=-8 <br> 8x-3y=12
gladu [14]

The coefficient matrix is build with its rows representing each equation, and its columns representing each variable.

So, you may write the matrix as

\left[\begin{array}{cc}\text{x-coefficient, 1st equation}&\text{y-coefficient, 1st equation}\\\text{x-coefficient, 2nd equation}&\text{y-coefficient, 2nd equation} \end{array}\right]

which means

\left[\begin{array}{cc}4&-3\\8&-3\end{array}\right]

The determinant is computed subtracting diagonals:

\left | \left[ \begin{array}{cc}a&b\\c&d\end{array}\right]\right | = ad-bc

So, we have

\left | \left[\begin{array}{cc}4&-3\\8&-3\end{array}\right] \right | = 4(-3) - 8(-3) = -4(-3) = 12

8 0
3 years ago
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