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3 years ago

Add. write your answer as a fraction in simplistic form -4 5/9 + 8/9

Mathematics

1 answer:

Debora [2.8K]3 years ago

6 0

Answer:

-3 3/9

Step-by-step explanation:

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A total of 384 tickets were sold for the school play. they were either adult tickets or student tickets. The number of student t

olganol [36]

128 because 128 times 2 is 256 children tickets and 256 plus 128 is 384

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2 years ago

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Charlotte bought 25 cookies to share with her class, and 5 of them are oatmeal raisin. What percent of the cookies are oatmeal r

LUCKY_DIMON [66]

Answer:

20%

Step-by-step explanation:

25 divided by 5 = 5

Convert to decimal

0.20

Convert to percentage

20%

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2 years ago

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Show that if A is invertible, then det Upper A Superscript negative 1det A−1equals=StartFraction 1 Over det Upper A EndFraction

netineya [11]

Answer:

Therefore

$det(A)*det(A^{-1}) = 1$ and $det(A^{-1}) = 1/det(A)$

Step-by-step explanation:

Remember that if

$I$ = Identity Matrix

then $det(I)=1$ .

Also remember that for any invertible matrix

$A*A^{-1} = I =$ Identity Matrix.

Therefore

$det(A*A^{-1}) = det(A)*det(A^{-1}) = det(I) = 1$

Therefore

$det(A)*det(A^{-1}) = 1$ and $det(A^{-1}) = 1/det(A)$

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2 years ago

Trigonometry

Nadusha1986 [10]

55° is equal to 0.9599 radians.

Step-by-step explanation:

Step 1:

If an angle is represented in degrees, it will be of the form x°.

If an angle is represented in radians, it will be of the form $\frac{\pi}{x}$ radians.

To convert degrees to radians, we multiply the degree measure by $\frac{\pi}{180}$ .

For the conversion of degrees to radians,

the degrees in radians = (given value in degrees)( $\frac{\pi}{180}$ ).

Step 2:

To convert 50°,

$55\left(\frac{\pi}{180}\right)=\frac{55\pi}{180}.$

$0.3055 (\pi) =0.9599$ radians.

So 55° is equal to 0.9599 radians.

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2 years ago

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2. Consider the division operations below and choose whether the result can be rational,

bearhunter [10]

Answer:

All are rational.

Step-by-step explanation:

=1/3/3/5

=1/3×5/3

=5/9

5/9 is non-terminating and recurring number so it is rational.

4/3√9/5

=4/3*3/5

=4/5

4/5 is a terminating number it is rational.

2*√16/√4

=2*4/2

4 is a natural/whole number it is also rational.

Note:if you need to ask any questions please let me know.

4 0

2 years ago