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4 years ago

Please help me !!!

Mathematics

1 answer:

Anastasy [175]4 years ago

4 0

$9)~6mn-9m-4n+6=3m(2n-3)-2(2n-3)=(3m-2)(2n-3)\\\\ 10)~a^3+a^2b+ab+b^2=a^2(a+b)+b(a+b)=(a^2+b)(a+b)\\\\ 11)~4r^2s-8rs-3r+6=4rs(r-2)-3(r-2)=(4rs-3)(r-2)\\\\ 12)~x^2y^2-3x^2+2y^2-6=x^2(y^2-3)+2(y^2-3)=\\\\=(x^2+2)(y^2-3)$

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Trigonometric identities assignment 4

kykrilka [37]

Answer:

<em>Answer: choice D.</em>

Step-by-step explanation:

<u>Trigonometric Functions</u>

We need to recall some properties and definitions of the trigonometric functions.

$\displaystyle \tan \theta=\frac{\sin\theta}{\cos\theta}$

$\displaystyle \sec \theta=\frac{1}{\cos\theta}$

We need to simplify the following expression:

$5\sin\theta\sec\theta$

Substituting the identity for the secant:

$\displaystyle 5\sin\theta\sec\theta=5\sin\theta.\frac{1}{\cos\theta}$

Operating:

$\displaystyle 5\sin\theta\sec\theta=5\frac{\sin\theta}{\cos\theta}$

Substituting the definition of the tangent:

$\displaystyle 5\sin\theta\sec\theta=5\tan\theta$

Correct choice D.

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3 years ago

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olganol [36]

Answer:

1/20 is 5%

Step-by-step explanation:

1/20 = 5%

20/20 = 100%

100 ÷ 20 = 5%

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3 years ago

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Aliun [14]

It would be 2,800,000

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3 years ago

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Can someone help me solve this?

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The area of a triangle is base x height/2,
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3 years ago

Is this right. Please help me

My name is Ann [436]

Answer:

ye that is the correct answer

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3 years ago