All categories

4 years ago

How much water must be evaporated from 36 ounces of a 8% salt solution to make a 9% salt solution?

Mathematics

1 answer:

topjm [15]4 years ago

3 0

Answer:

4 oz of water must be evaporated

Step-by-step explanation:

If we let x represent the amount of water to be evaporated, the relation between the solutions is ...

0.08 · 36 oz = 0.09 · (36 -x) oz

0.09x = 36(0.09 -0.08) . . . . . divide by oz; add .09x, subtract .08·36

x = 36· 0.01/0.09 = 36/9 = 4

4 ounces of water must be evaporated.

You might be interested in

Solve for x Please show your work Thank you

Licemer1 [7]

6-4=2
5-X=?
5-2=3
X=3
That is the answer, sorry if i didn't explain it well

6 0

3 years ago

X squared = −169. A= undefined B= 13 C= ±13 D= −13

mash [69]

Answer:

A. Undefined.

Step-by-step explanation:

There is no real square root of a negative number.

7 0

3 years ago

Consider the function below. f(x)= x^3 + 2x^2 - x - 2 plot the x and y intercepts of the function

dimulka [17.4K]

In the Figure below is shown the graph of this function. We have the following function:

$f(x)=x^3+2x^2-x-2$

The $y-intercept$ occurs when $x=0$ , so:

$f(0)=(0)^3+2(0)^2-(0)-2=-2$

Therefore, the $y-intercept$ is the given by the point:

$\boxed{(0,-2)}$

From the figure we have three $x-intercepts$ :

$\boxed{P_{1}(-2,0)} \\ \boxed{P_{2}(-1,0)} \\ \boxed{P_{3}(1,0)}$

So, the $x-intercepts$ occur when $y=0$ . Thus, proving this:

$f(x)=x^3+2x^2-x-2 \\ \\ For \ P_{1}:\\ If \ x=-2, \ y=(-2)^3+2(-2)^2-(-2)-2=0 \\ \\ For \ P_{2}:\\ If \ x=-1, \ y=(-1)^3+2(-1)^2-(-1)-2=0 \\ \\ For \ P_{3}:\\ If \ x=1, \ y=(1)^3+2(1)^2-(1)-2=0$

7 0

4 years ago

Read 2 more answers

87.99 minusss 52.46 HELPPPPPPPPPPPP

torisob [31]

35.53 is the answer I hoped that helped

7 0

4 years ago

True or False

LUCKY_DIMON [66]

Answer:

hope this helps

Step-by-step explanation:

1. false it's positive

2. true

3. true

4 0

3 years ago