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stepan [7]
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
Mathematics
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.

~

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
Read 2 more answers
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)
3 0
3 years ago
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