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3 years ago

Please answer all of these

Mathematics

2 answers:

FromTheMoon [43]3 years ago

7 0

What’s the questions

Firlakuza [10]3 years ago

4 0

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Dose anyone know how to solve this??

AfilCa [17]

Answer:

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5 0

3 years ago

the Wall Street Journal reported that automobile crashes cost United States $162 billion annually. The average cost per person f

Tanya [424]

Answer:

a) Margin of error = 166.311

b) sample size ≥ 62

Step-by-step explanation:

Given:

Average cost = $1599

Sample size = 50 persons

Standard deviation = $600

Confidence level is 95%

a) Margin of error = $z\frac{\sigma}{\sqrt{n}}$

Now for confidence level of 95% z-value = 1.96

Thus,

Margin of error = $1.96\frac{600}{\sqrt{50}}$

Margin of error = 166.311

b) For Margin of error ≤ 150

$z\frac{\sigma}{\sqrt{n}}$ ≤ 150

$1.96\frac{600}{\sqrt{n}}$ ≤ 150

$1.96\frac{600}{150}$ ≤ √n

√n ≥ 7.84

n ≥ 61.4656

Therefore,

sample size ≥ 62

6 0

4 years ago

What is 2015722184 multiplied by 142748261654 i cant find this on calculator for some reason

Nostrana [21]

Answer:

The Exact answer is 287740837743404332336.

The Decimal Answer is 2.87740837 ⋅ 10 ^20.

8 0

3 years ago

Whats x-3+75x compared to or equal to x-75+3x

lbvjy [14]

Answer:

x=-1

Step-by-step explanation:

-3+75x<-75+3x

75x-3<-75+3x

75x-3<3x-7575x−3<3x−75

75x-3-3x<-75

72x-3<-75

72x<-75+3

72x<-72

x=-1

7 0

3 years ago

Central Angles and Arc Measures Practice<br><br> What is X?

myrzilka [38]

Answer: $5^{\circ}$

Step-by-step explanation:

Given

$\angle DIE=(18x-2)^{\circ}\\\angle DIH=15^{\circ}\\\angle FIG=103^{\circ}$

from the figure

$\angle HIE=\angle GIF\quad [\text{vertically opposite angles}]\\\angle HID+\angle DIE=\angle GIF\\15^{\circ}+(18x)^{\circ}-2^{\circ}=103^{\circ}\\(18x)^{\circ}=103^{\circ}-13^{\circ}\\\\x=\dfrac{90^{\circ}}{18}\\\\x=5^{\circ}$

7 0

3 years ago