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3 years ago

A bag contains the following marbles: 5

Mathematics

2 answers:

Inessa [10]3 years ago

5 0

Answer:

5:20

Step-by-step explanation:

There are 5 black marbles and 20 brown marbles.

You would put black marbles (5) first, because it came before brown (20) in the list.

Pani-rosa [81]3 years ago

3 0

20:5
20/5
The answer would be 4:1 or 4/1

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yawa3891 [41]

B
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3 years ago

Read 2 more answers

The Tennessee Tourism Institute (TTI) plans to sample information center visitors entering the state to learn the fraction of vi

baherus [9]

Answer: 2185

Step-by-step explanation:

Let p be the proportion of visitors are campers.

Given : The Tennessee Tourism Institute (TTI) plans to sample information center visitors entering the state to learn the fraction of visitors who plan to camp in the state.

The prior proportion of visitors are campers : p=0.35

Allowable error : E= 2%= 0.02

We know that the z-value for 95% confidence = $z_c=1.96$

Then by Central Limit Theorem , the required sample size would be :

$n=p(1-p)(\dfrac{z_{c}}{E})^2$

$\Rightarrow\ n=0.35(1-0.35)(\dfrac{1.96}{0.02})^2\\\\ n= 0.35(0.65)(9604)$

Simply , we get

$n=2184.91\approx2185$ [Rounded to the next whole number.]

Hence, the smallest sample size to estimate the population proportion of campers =2185

7 0

2 years ago

Find the value of y. Please help asap. I've been on this for ages.

anastassius [24]

Answer:

53.50

Step-by-step explanation:

168 is the circumference so i divided it by pi (3.14)

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3 years ago

A bat flies at an average speed of 32 kilometres an hour. At this speed, how far will it fly in 15 minutes?

olga_2 [115]

Filling in 20 characters just to answer with a pic

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3 years ago

Solve the inequality: 4.7 + y > 15

GarryVolchara [31]

Move all terms not containing y to the right side of the inequality

Inequality form:

y>10.3

Interval form:

(10.3,∞)

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2 years ago