How do u do this what’s the answer?

Mathematics

2 answers:

Kobotan [32]3 years ago

7 0

Okay! the answer is 24.

solong [7]3 years ago

3 0

Answer:

You can fit 48 books on the shelf.

Step-by-step explanation:

First convert 3 feet to inches.

3ft = 36in

Now divide 36 inches by 3/4 inches

(36in) / (3/4in)

36 x (4/3) = 48

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Is 152 points in 8 games<br> 171 points in 9 games equivalent

max2010maxim [7]

Answer:

Yes, they are equivalent.

3 0

3 years ago

I don't need you to work it out, just theorem(s) i need to reach the answer :)

VikaD [51]

Not sure why such an old question is showing up on my feed...

Anyway, let $x=\tan^{-1}\dfrac43$ and $y=\sin^{-1}\dfrac35$ . Then we want to find the exact value of $\cos(x-y)$ .

Use the angle difference identity:

$\cos(x-y)=\cos x\cos y+\sin x\sin y$

and right away we find $\sin y=\dfrac35$ . By the Pythagorean theorem, we also find $\cos y=\dfrac45$ . (Actually, this could potentially be negative, but let's assume all angles are in the first quadrant for convenience.)

Meanwhile, if $\tan x=\dfrac43$ , then (by Pythagorean theorem) $\sec x=\dfrac53$ , so $\cos x=\dfrac35$ . And from this, $\sin x=\dfrac45$ .

So,

$\cos\left(\tan^{-1}\dfrac43-\sin^{-1}\dfrac35\right)=\dfrac35\cdot\dfrac45+\dfrac45\cdot\dfrac35=\dfrac{24}{25}$

7 0

3 years ago

Please help 2=*255/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="93a5a6aad3bea6a6a5a6a5a3aa">[email&#

leva [86]

The answer is 45 grace

5 0

3 years ago

2/3 x 4/7 write the answer in the simplest form

trapecia [35]

Answer:

8/21

I don't think that it can be simplified further....