3 years ago

A 20% acid solution is mixed with a 70% acid solution to get 50 liters of a 40% solution.

Mathematics

1 answer:

lilavasa [31]3 years ago

4 0

Answer:

B. 2x + 7y 100% sure just got it right

Step-by-step explanation:

B. 2x + 7y

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Find the absolute maximum value for the function f(x) = x^2 − 4, on the interval [–3, 0) U (0, 2].

Andreyy89

Answer:

Step-by-step explanation:

The function $y=x^2 -4$ is

decreasing for all $x\in [-3,0);$
is increasing for all $x\in (0,2]$

(see attached diagram for details).

The maximum value of the function is at endpoints -3 or 2. find y(-3) and y(2):

$y(-3)=(-3)^2-4=9-4=5\\ \\y(2)=4^2-4=0$

So, the maximum value is 5.

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3 years ago

Please help. Answer 4 and 5, please

Thepotemich [5.8K]

Asked and answered elsewhere.
brainly.com/question/8586522

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3 years ago

-the equations x-y=-14 and -x-y=14 what is the number of solutions? A.) no solutions B.) infinitely many solutions C.) one solut

Yuki888 [10]

Answer:

The answer is C one solution

Step-by-step explanation:

x-y=-14

-y=-x-14 bring x to the other side

y=x+14 divide everything by -1

-x-y=14

-y=x+14 bring x to the other side

y=-x-14 divide everything by -1

6 0

3 years ago

Someone that knows geometry I’m stressed because I don’t know

zheka24 [161]

Answer:

14.5

Step-by-step explanation:

2m+6=35

2m=29

m=14.5

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3 years ago

Read 2 more answers

Please help, I need this by 10 30 AM

Ainat [17]

Answer:

50 laps

Step-by-step explanation:

20+1.25x+15+2.5x+40+1.5x+25+1.75x=450

7x+100=450

7x+200-200=450-100

7x=350

7x/7=350/7

x=50

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3 years ago