3 years ago

Fill in the blank

Mathematics

2 answers:

vaieri [72.5K]3 years ago

6 0

Answer:

y=2/3x

Step-by-step explanation:

neonofarm [45]3 years ago

6 0

Your answer would be Y=2/3x

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The weekly earnings of students in one age group are normally distributed with a standard deviation of 47 dollars. A researcher

ELEN [110]

Answer:

Option D) 340

Step-by-step explanation:

We are given the following in the question:

Alpha, α = 0.05

Population standard deviation, σ = $47

Margin of error = 5

95% Confidence Interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

$\text{Margin of error} = z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

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

$5 = 1.96(\dfrac{47}{\sqrt{n}} )\\\\\sqrt{n} = \dfrac{47\times 1.96}{5}\\\\n = 339.443776\\\Rightarrow n \approx 340$

Thus, the correct answer is

Option D) 340

7 0

2 years ago

the endpoints of the side of rectangle ABCD in the coordinate plane are A (3,7)and B(4,1).Find the equation of the line that con

Elden [556K]

Answer:

1,6

Step-by-step explanation:

5 0

3 years ago

A container has peppermint gum and spearmint gum. There are 40 pieces of peppermint gum in the container and the ratio of pepper

Anit [1.1K]

Answer:

16 pieces of spearmint gum

Step-by-step explanation:

For every five pieces of peppermint gum, there are 2 pieces of spearmint gum.

First, divide the total number of peppermint gum by 5:

40/5 = 8

Multiply this number by 2 (pieces of spearmint) to get the number of spearmint gum pieces:

8 x 2 = 16

Proof:

Ratio is 40 : 16, dividing this by 8 will reduce the ratio to 5:2

7 0

2 years ago

Evaluate the expression

lora16 [44]

The correct answer is B=4

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2 years ago

Solve<br> 2(x+4)= 20<br> Solve this please

Natasha2012 [34]

2x+8=20
2x=20-8
2x=12
12/2=x
6=x

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2 years ago

Read 2 more answers