3 years ago

Thirty pounds of salt water solution contains fifteen percent salt. How much salt is in the water?

Mathematics

1 answer:

amid [387]3 years ago

7 0

The answer would be 4.5 pounds of salt.

4.5 15
----- = -------
30 100

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<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bcos%2030%7D%7B1%2Bsin30%7D%3Dtg30" id="TexFormula1" title="\frac{cos 30}{1+sin30}=tg

Kay [80]

$\cos 30=\frac{\sqrt{3}}{2}$

$\sin 30 = \frac{1}{2}$

$\tan 30=\frac{1}{\sqrt{3}}$

Now we insert that into the equation:

$\dfrac{\frac{\sqrt{3}}{2}}{1+\frac{1}{2}} = \frac{1}{\sqrt{3}}$

$\dfrac{\frac{\sqrt{3}}{2}}{\frac{3}{2}} = \frac{1}{\sqrt{3}}$

$\frac{\sqrt{3}}{3} = \frac{1}{\sqrt{3}}$

$\frac{\sqrt{3}}{3} = \frac{1}{\sqrt{3}}\cdot \frac{\sqrt{3}}{\sqrt{3}}\\$

$\frac{\sqrt{3}}{3} = \frac{\sqrt{3}}{\sqrt{3}\cdot \sqrt{3}}\\$

$\frac{\sqrt{3}}{3} = \frac{\sqrt{3}}{3}$

6 0

4 years ago

the number of bacteria in a culture is growing at a rate of 1500e^(3t/4) per unit of time t. at t=0, the number of bacteria pres

makkiz [27]

Quarter 200 of per unit =3t)4^

5 0

4 years ago

Read 2 more answers

Let ∠X and ∠Y be complementary. If sin(X) = 3 5 and cos(X) = 4 5 , then what is the value of sin(Y)? A) 3 5 B) 4 5 C) 5 4 D) 5 3

Igoryamba

Oi eu ñ sei me descupe ...

4 0

4 years ago

Evaluate the expression 4x/2x for x=3

gayaneshka [121]

Hey there!

If $\bold{x=3}$ then your equation becomes $\downarrow$

$\bold{\frac{4(3)}{2(3)}}$

$\bold{4\times3=12}$
$\bold{2\times3=6\\}$
Your equation should becomes: $\bold{\frac{12}{6}=2}$
$\boxed{\boxed{\bold{Answer:2}}}$

Good luck on your assignment and enjoy your day

~ $\bold{LoveYourselfFirst:)}$

5 0

3 years ago

Please help me with this it is practice and I'm confused

rodikova [14]

Answer:

Step-by-step explanation:

A function is any line that does not repeat in x-value (doesn't repeat on the x-axis).

7 0

3 years ago