2 years ago

Please help me i’m desperateeee!!!

Mathematics

1 answer:

lara31 [8.8K]2 years ago

7 0

Answer:

option no.D

6y+15x

Step-by-step explanation:

hope it helps

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Amalia used 8 lemons to make a picture of lemonade that served six people. How many lemons would she need to make enough lemonad

11111nata11111 [884]

28 lemons is the answer to your question

8 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

What is the Surface area for a rectangular prism that has the measurements of 2, 12, and 6?

Bond [772]

Answer:

216

Step-by-step explanation:

A=2(wl+hl+hw)=2·(12·2+6·2+6·12)=216

5 0

2 years ago

Read 2 more answers

Xy=22 as a proportion please! :)