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3 years ago

9

A nurse mixes 60 cc of a 70% saline solution with a 20% saline solution to produce a 25% saline solution. How much of the 20% so

lution should he use

1 answer:

nikklg [1K]3 years ago

8 0

40%
hope this helped

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What is the slope of the line through (-1,4) and (5,2)

butalik [34]

Answer:

Slope (m) = $-\frac{1}{3}$

Step-by-step explanation:

Use the following equation:

Slope $(m) = \frac{y_2 - y_1}{x_2 - x_1}$

Let:

$(x_1 , y_1) = (-1 , 4)\\(x_2 , y_2) = (5 , 2)$

Plug in the corresponding numbers to the corresponding variables:

$m = \frac{2 - 4}{5 - (-1)} = \frac{2 - 4}{5 + 1} = \frac{-2}{6}$

Simplify. Divide common factors from both the numerator and denominator:

$\frac{(-\frac{2}{6})}{\frac{2}{2} } = -\frac{1}{3}$

$-\frac{1}{3}$ is your answer.

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8 0

3 years ago

you are working as a Caterer and need 20 gallons of lemonade For an upcoming event. The bottles of lemonade you are purchasing a

kifflom [539]

20 imperial gallons = 90.9218 litres
so i'd say you'd need to buy 91 bottles or...

20 US Liquid gallons = 75.7082 litres
so you'd have to buy 76 bottles.
Hope this answers your question! It depends what gallon you're working from.

3 0

4 years ago

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Suppose that y varies inversely with x, and y = 2 when x = 4. What is an<br>variation?

Alexeev081 [22]

Answer:

xy=8

Step-by-step explanation:

The equation for inverse variation is

xy = k where k is the constant of variation

4*2 = k

8=k

The equation is

xy=8

3 0

3 years ago

If f(x) = 2x2 + 3 and g(x) = x2 – 7, find (f + g)(x).

Reika [66]

Answer:

B.3x2 - 4

Step-by-step explanation:

(f+g)(x) ➡ f(x) +g(x)

add up the functions

2x2 + 3 + x2 - 7 = 3x2 - 4

8 0

4 years ago

2. A kitten is gaining 0.6 pounds per week. The kitten is currently seven pounds. After how many weeks will the kitten be at lea

Anika [276]

5 weeks. (This can be represented by the equation 7+.6x=10)

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3 years ago

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