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Yanka [14]
3 years ago
5

A bainbridge mass spectrometer is used to separate

Mathematics
1 answer:
Ivan3 years ago
8 0
Ions into a gas mixture according to their mass ratio q/m.
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A survey of 25 grocery stores revealed that the mean price of a gallon of milk was $2.98, with a standard error of $0.10. What i
Gnesinka [82]

Answer:

95% confidence interval: (2.784,3.176)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 25

Sample mean = $2.98

Standard error = $0.10

Alpha = 0.05

95% confidence interval:

\mu \pm z_{critical}(\text{Standard error})

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

2.98 \pm 1.96(0.10) = 2.98 \pm 0.196 = (2.784,3.176)

5 0
3 years ago
Question 3: Which of the following constructions would help to construct a line passing through point C that is perpendicular to
lakkis [162]

Answer:

Construction of a perpendicular bisector through C

Step-by-step explanation:

i just did the problem and put in that answer on bakpax and got it right

3 0
3 years ago
Help find the missing lengths round to nearest tenth
Mama L [17]

Answer:

<h2>x = 20.8</h2><h2>y = 22.3</h2>

Step-by-step explanation:

  • Theta is 21 degrees
  • x is the adjacent side
  • 8 is the opposite side
  • y is the hypothenuse

SOH - CAH - TOA

Since the opposite side is given and we need to find the length of the adjacent side, we can use tangent to solve for x.

tan 21=\frac{opposite}{adjacent} \\tan 21 =\frac{8}{x} \\0.384 =\frac{8}{x} \\0.384x =8 \\x=\frac{8}{0.384} \\x=20.84

Since the opposite side is given and we need to find the length of the hypotenuse, we can use sine to solve for y.

sin 21=\frac{opposite}{hypotenuse} \\sin21 =\frac{8}{y} \\0.358 =\frac{8}{y} \\0.358y=8 \\y=\frac{8}{0.358} \\y=22.32

6 0
3 years ago
8.
borishaifa [10]

Answer: 143

Step-by-step explanation: So, first, you add the two first amounts, which are $12 and $22, which is 34. Then, you divide the amount you have (4882) by the amount you <em>need</em> (34). And finally, you take away the decimal, and you have your answer!

6 0
3 years ago
Jake worked for 5 days and his earnings had a mean of £28 per day.
Lana71 [14]

Answer:

He earned £32.

Step-by-step explanation:

24+26+28+30+32=140

140/5=28

Hope this helps!

Please mark as brainliest if correct!

4 0
2 years ago
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