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3 years ago

6

Multiply two and four-fifths negative five and two-thirds

1 answer:

Cerrena [4.2K]3 years ago

4 0

The answer is -25/3.

If you need it simplified let me know.

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Help I will mark brain list!!!!!

dangina [55]

Answer: I'm not sure exactly how you want this answered.

Step-by-step explanation:

Just by simplifying the expression, I got $\frac{a^{2}xy }{2} +a^{3}x-\frac{3x^{2} y}{5} -ay^{2}$

3 0

3 years ago

Please solve this and only answer with image

horsena [70]

$\cot^4 A - \cot^2 A = 1\\\\\cot^4 A = 1 + \cot^2 A\\\\\frac{\cos^4 A}{\sin^4 A} = 1 + \frac{\cos^2 A}{\sin^2 A}\\\\\frac{\cos^4 A}{\sin^4 A} = \frac{\sin^2 A}{\sin^2 A}+\frac{\cos^2 A}{\sin^2 A}\\\\\frac{\cos^4 A}{\sin^4 A} = \frac{\sin^2 A+\cos^2 A}{\sin^2 A}\\\\\frac{\cos^4 A}{\sin^4 A} = \frac{1}{\sin^2 A}\\\\\cos^4 A = \frac{\sin^4 A}{\sin^2 A}\\\\\cos^4 A = \sin^2 A\\\\$

This then means,

$\cos^4 A + \cos^2 A = 1\\\\\sin^2 A + \cos^2 A = 1\\\\$

which is the pythagorean trig identity. This concludes the proof.

Therefore, if $\cot^4 A - \cot^2 A = 1$ , then $\cos^4 A + \cos^2 A = 1$

5 0

3 years ago

Evaluate f(x) =1/3x for x = 4.

slava [35]

Answer: 1 1/3 or 4/3

Step-by-step explanation: f(4) =1/3(4) = 4/3 = 1 1/3

7 0

3 years ago

Read 2 more answers

How many total necklaces can Maria own?

Sonbull [250]

Answer:

49

Step-by-step explanation:

She can buy 46 more and she has three, so she can own 49

8 0

3 years ago

Read 2 more answers

] What percentage of the last 30 U.S. Presidents were inaugurated at the age of 60 or later? (Round to 1 decimal place.)

svetlana [45]

Answer:

20.0%

Step-by-step explanation:

The last 30 presidents of America starts from the 16th president, Abraham Lincoln and ends with the current and 45th president, Donald Trump.

The presidents that are 60 and above years during this period include

Donald Trump, Goerge H. W. Bush, Roland Regan, Gerald Ford, Dwight D. Eisenhower and Harry S. Truman.

Making 6 of them out of 30

The percentage is given by

Number of presidents aged 60 and above×100/Total number of presidents

6×30/100=20%

7 0

3 years ago