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2 years ago

4 x ½ what is the answer

Mathematics

1 answer:

Strike441 [17]2 years ago

7 0

Answer:

Step-by-step explanation:

4/1×1/2 =4×1

1 x2 =4/2 =2

<h2>Hope it helps</h2>

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to arrive at 2000 liters of 60% saline solution the attendant has to mix a 90% and a 40% saline solution. How many liters of eac

CaHeK987 [17]

Answer:

800 liters of 90% saline solution and 1200 liters of 40% saline solution should be used.

Step-by-step explanation:

Given:

At 2000 liters of 60% saline solution the attendant has to mix a 90% and a 40% saline solution.

Now, to find the number of liters of saline solution each should be used.

Let the liters of 90% saline solution mix be $x.$

And let the liters of 40% saline solution mix be $y.$

So, the total number of liters:

$x+y=2000.$

$y=2000-x\ \ \ ....(1)$

Now, the total percentage of saline solution:

$90\%\ of\ x+40\%\ of\ y=60\%\ of\ 2000$

$\frac{90}{100}\times x+\frac{40}{100}\times y=\frac{60}{100}\times 2000$

$0.9x+0.4y=1200$

Substituting the value of $y$ from equation (1) we get:

$0.9x+0.4(2000-x)=1200$

$0.9x+800-0.4x=1200$

$0.5x+800=1200$

Subtracting both sides by 800 we get:

$0.5x=400$

Dividing both sides by 0.5 we get:

$x=800.$

The liters of 90% saline solution mix = 800.

Now, substituting the value of $x$ in equation (1) to get the liters of 40% saline solution:

$y=2000-x$

$y=2000-800$

$y=1200.$

Thus, the liters of 40% saline solution = 1200.

Therefore, 800 liters of 90% saline solution and 1200 liters of 40% saline solution should be used.

8 0

3 years ago

Pls help like plsss and thx

Mandarinka [93]

1.5 glad I could help!

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2 years ago

Read 2 more answers

Where A = -7 and b = 9 what is the value of the midpoint?

sergey [27]

Answer:

Find the value of x if B is the midpoint of AC, AB = 2x + 9 and BC = 37

Step-by-step explanation:

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2 years ago

Is (6, -24) a solution to the equation: y = -7x + 18? ¿Es (6.-24)

KatRina [158]

i think that's the answer

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3 years ago

Equations that look different but have the same solution are said to be

Gekata [30.6K]

Let's define each choice to differentiate which is the answer

A. Equivalent - equivalent equations may not look exactly the same on face value. But they are equivalent because they have the same exact solution.

B. Expressions - expression is a general term for equations that are formed from word problems

C. Equal - equal equations are the exact duplicate of each other

D. Similar - this term is only used on geometric shapes to tell that the two shapes have a fixed ratio of their similar sides or angles

E. Radical - radical equations are those involving fractions

Therefore, from their descriptions, the answer is A.

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2 years ago

4 x ½ what is the answer​

4 x ½ what is the answer