4 years ago

He statement: 4 – 3+5 = –6 +8+4. This is a mathemati

Mathematics

1 answer:

kotegsom [21]4 years ago

7 0

Answer:

nope

Step-by-step explanation:

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If x = 4cosa and y = 5tana, find (x^2/16) - (y^2/25)

Cloud [144]

$x = 4 \cos(a)$

$\frac{x}{4} = \cos(a) \\$

$( { \frac{x}{4} })^{2} = ({ \cos(a) })^{2} \\$

$\frac{ {x}^{2} }{16} = {cos}^{2} (a) \\$

_____________________________________________

$y = 5 \tan(a)$

$\frac{y}{5} = \tan(a) \\$

$( { \frac{y}{5} })^{2} = ( { \tan(a) })^{2} \\$

$\frac{ {y}^{2} }{25} = {tan}^{2} (a) \\$

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Thus ;

$\frac{ {x}^{2} }{16} - \frac{ {y}^{2} }{25} = \\$

${cos}^{2} (a) - {tan}^{2} (a)$

3 0

3 years ago

Solve for u in terms of r, s, and t.<br><br> t= –rsu<br><br> u=

Stella [2.4K]

Answer:

u = - $\frac{t}{rs}$

Step-by-step explanation:

Given

t = - rsu ( multiply both sides by - 1 )

- t = rsu ( divide both sides by rs )

- $\frac{t}{rs}$ = u

8 0

3 years ago

9 4/5÷3 1/2 as a fraction

kvasek [131]

Answer:

As an improper fraction, the answer is 14/5, and as a mixed fraction, the answer is 2 4/5.

Step-by-step explanation:

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3 0

2 years ago

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Can someone please help me ?

Marina86 [1]

Common difference is -2.5

answer is an = 15.5 - 2.5n

8 0

3 years ago

HELP ASAP ILL GIVE A THANKS AND CROWN U BRANLIEST

Marina86 [1]

Answer:

I think it's the second one

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers