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3 years ago

9/4y -12 =1/4y-4 solve for y

Mathematics

2 answers:

inessss [21]3 years ago

5 0

Answer:y=4

Step-by-step explanation:

Dmitry_Shevchenko [17]3 years ago

3 0

Math papa is an app you can use for that type of questions

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Period of f(t)= -2cos(3t)

ivann1987 [24]

Answer:

Period=2pi/3

Step-by-step explanation:

8 0

3 years ago

What is the measure in degrees of 8x if one angle is already 7x and 44.4 degrees?

Julli [10]

7x+8x+44.4=180

15x=44.4=180

15x=135.6

x=9.04°

so 8x=72.32° and the 7x is 63.28°

6 0

4 years ago

Verify that (cos²a) (2 + tan² a) = 2 - sin² a....<br>

Sveta_85 [38]

Trigonometric Formula's:

$\boxed{\sf \ \sf \sin^2 \theta + \cos^2 \theta = 1}$

$\boxed{ \sf tan\theta = \frac{sin\theta}{cos\theta} }$

Given to verify the following:

$\bf (cos^2a) (2 + tan^2 a) = 2 - sin^2 a$

$\texttt{\underline{rewrite the equation}:}$

$\rightarrow \sf (cos^2a) (2 + \dfrac{sin^2 a}{cos^2 a} )$

$\texttt{\underline{apply distributive method}:}$

$\rightarrow \sf 2 (cos^2a) + (\dfrac{sin^2 a}{cos^2 a} ) (cos^2a)$

$\texttt{\underline{simplify the following}:}$

$\rightarrow \sf 2cos^2 a + sin^2 a$

$\texttt{\underline{rewrite the equation}:}$

$\rightarrow \sf 2(1 - sin^2a ) + sin^2 a$

$\texttt{\underline{distribute inside the parenthesis}:}$

$\rightarrow \sf 2 - 2sin^2a + sin^2 a$

$\texttt{\underline{simplify the following}} :$

$\rightarrow \sf 2 - sin^2a$

Hence, verified the trigonometric identity.

7 0

2 years ago

Read 2 more answers

.<br>If a*b = a - 1, then 7 * 28 =<br><br>

Butoxors [25]

Answer:

Step-by-step explanation:

5 0

3 years ago

What is the approximate square root to 115

padilas [110]

what is the approximate square root to 115

10.7

Step-by-step explanation:

this is the ans

8 0

3 years ago