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Vesnalui [34]
4 years ago
11

The amount and the concentration of a salt solution is given. How much salt would you get if you evaporated all water from this

solution? 450g of a 9% solution
Mathematics
2 answers:
DiKsa [7]4 years ago
6 0

Answer:

40.5 g

Step-by-step explanation:

Find how much salt is in 450 g of a 9% salt solution.

Note that

450 g - 100%,

x g - 9%,

then

\dfrac{450}{x}=\dfrac{100}{9},\\ \\x=\dfrac{450\cdot 9}{100}=40.5\ g.

If you evaporated all water from this solution, then you would get 40.5 g of salt.

Elina [12.6K]4 years ago
4 0

Answer:

40.5g

Step-by-step explanation:

RSM anyone?

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IRISSAK [1]

Answer:

y= 2x-3  m=2 b= -3

Step-by-step explanation:

we distribute 2(x-2)

y-1 = 2(x-2)

y-1 = 2x-4

then add one to both sides

y-1= 2x -4

 +1       +1

since it is negative four and you are adding one it would be -3

y= 2x -3  that is your slope intercept form.

y= mx +b  so m=2 and b= -3

6 0
3 years ago
4 groups of 5 hundredths
natka813 [3]

twenty hundretdths is what I assume the answer is


6 0
3 years ago
Denise lives in a two-story house with a basement. The first
Umnica [9.8K]

Answer:

Distance = 110.5 cm

Step-by-step explanation:

It is given that,

The basement floor is at  an elevation of −10.5 feet

The second story floor has an  elevation of 121 feet.

We need to find the distance between the basement floor and the second story floor.

Distance = -10.5 + 121

= 110.5 feet

So, the distance between the basement floor and the second story floor is 110.5 cm.

7 0
3 years ago
Can you help me answer this question
r-ruslan [8.4K]
Division of a fraction is the equivalent of multiplying by its reciprocal
ex.
\frac{\frac{A}{B} }{\frac{C}{D}}=\frac{A}{B} *\frac{D}{C}
i suggest you try to remember this concept

in terms of your question

\frac{\frac{4c-12}{4c+8}}{\frac{c-3}{c^2-4}}= \frac{4c-12}{4c+8} *\frac{c^2 -4}{c-3}

from this point, just multiple the numerators together and denominators together, then simplify if necessary

fyi- difference of squares
x^2-b^2 = (x-b)(x+b)
relating that to
c^2-4 = c^2 -2^2 = (c-2)(c+2)

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4 0
4 years ago
Find the area of the trapezoid!!!! PLEASE HELP!!!!
san4es73 [151]

ANSWER

32 \sqrt{3}  {ft}^{2}

EXPLANATION

The area of a tra-pezoid is half times sum of the bases times the vertical height.

From the diagram ( see attachment) we use the Pythagoras Theorem to obtain,

{x}^{2}  +  {(4 \sqrt{3}) }^{2}  =  {8}^{2}

{x}^{2}  +  48  =  64

{x}^{2}  =  64 - 48

{x}^{2}=16

x =  \sqrt{16}  = 4ft

This implies that , y=10-4=6ft

The area of tra-pezoid

=  \frac{1}{2} (10 + 6) \times 4 \sqrt{3}

=  \frac{1}{2} (16) \times 4 \sqrt{3}

=  8\times 4 \sqrt{3}

= 32 \sqrt{3}  {ft}^{2}

6 0
4 years ago
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