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deff fn [24]
3 years ago
9

URGENT QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 2 + 2 = ______

Mathematics
2 answers:
Sergio039 [100]3 years ago
7 0

Answer

4

Step-by-step explanation:

Brilliant_brown [7]3 years ago
7 0

Answer:

4

Step-by-step explanation:

2+2 = 4!!!

Hope this helps :)

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As a nurse, part of your daily duties is to mix medications in the proper proportions for your patients. For one of your regular
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Answer:

10 milligrams of Medication A

Step-by-step explanation:

We'll write proportions/ratios for this:

20:16 is the usual proportion, and x:8 is this week's dose. The ratio from A to B has to be equal, so

20/16 = x/8

Cross-multiply:

(20)(8) = (16)(x)

160 = 16x

divide both sides by 16

x = 10

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5 0
3 years ago
It is believed that 11% of all Americans are left-handed. In a random sample of 100 students from a particular college with 1012
tia_tia [17]

Answer:

Step-by-step explanation:

We can calculate this confidence interval using the population proportion calculation. To do this we must find p' and q'

Where p' = 14/100= 0.14 (no of left handed sample promotion)

q' = 1-p' = 1-0.14= 0.86

Since the requested confidence level is CL = 0.98, then α = 1 – CL = 1 – 0.98 = 0.02/2= 0.01, z (0.01) = 2.326

Using p' - z alpha √(p'q'/n) for the lower interval - 0.14-2.326√(0.14*0.86/100)

= -2.186√0.00325

= -2.186*0.057

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Using p' + z alpha √(p'q'/n)

0.14+2.326√(0.14*0.86/100)

= 0.466*0.057

= 26.5%

Thus we estimate with 98% confidence that between 12% and 27% of all Americans are left handed.

6 0
3 years ago
A motorboat covers the distance from one pier to the other pier in 4 hours and the way back in 5 hours. What is the speed of the
aleksklad [387]
R = speed in still water
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r - c = speed against current

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80 = 10r - 100
180 = 10r
18 = r
The speed in still water is 18 km/hour
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2 years ago
When graphing a linear inequality, what does a dashed boundary line indicate?
VLD [36.1K]
The dashed boundary line means that the solutions are not on the boundary line. It is used for < and >
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3 years ago
Which of the following statements is NOT equivalent to the statement, 'There exists either a
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Computer Scientist lol I need 20 characters
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