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kykrilka [37]
3 years ago
6

Katherine baked a round cake that is 9 inches in diameter. She wants to decorate the cake by putting a piece of ribbon around th

e bottom. About how long does the ribbon need to be to wrap around the cake?
Mathematics
2 answers:
kaheart [24]3 years ago
5 0

Answer:

28.26 inches long of ribbon

avanturin [10]3 years ago
5 0

Answer:

5

Step-by-step explanation:

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Karel the Dog is instructed to move forward three spaces. Then, if Karel is standing on a ball, Karel will turn right and move f
Klio2033 [76]

Complete Question

The diagram for the question is shown on the first uploaded image

Answer:

The final  position of  Karel is shown on the second uploaded image

Step-by-step explanation:

On the diagram the dot represents steps to be taken by Karel

Now after Karel the Dog has moved forward three spaces, Karel will be standing on a ball, so Karel will turn right  move forward two spaces

So the final position of  Karel is shown on the second uploaded image

5 0
3 years ago
It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate
Hitman42 [59]

Answer:

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.                          

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

\sigma^2 = 484\\\sigma =\sqrt{484} = 22

Confidence level = 0.95

Significance level = 0.05

Margin of error = 5

Formula:

Margin of error =

E = z\times \dfrac{\sigma}{\sqrt{n}}\\\\n = (\dfrac{z\times \sigma}{E})^2

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

Putting values, we get

E\leq 5\\\\1.96\times \dfrac{22}{\sqrt{n}} \leq 5\\\\\sqrt{n} \geq 1.96\times \dfrac{22}{5}\\\\n \geq (1.96\times \dfrac{22}{5})^2\\\\n \geq 74.373

Thus, the minimum sample size is n = 75 so that the desired margin of error is 5 or less.

3 0
3 years ago
Jane bought 12 mangoes for $600 how many mangoes can she buy with $1000​
Ghella [55]

Answer:

20 mangos

Step-by-step explanation:

1. Divide $600 by 12. Your answer should be $50. This means that every mango costs $50.

2. You now need to solve the expression: 1000 ÷ 50 which equals 20. This means that with $1000 Jane can buy 20 mangos.

3 0
3 years ago
Can anyone help me with this geometry two column proof
Anastasy [175]

Answer:

Step-by-step explanation:

∠1 + ∠2 = 180                      Linear pair

∠4 + ∠5 +∠ 3 = 180             form straight line

∠1 + ∠2 = ∠4 + ∠5 + ∠3        from statement 1 and 2

∠3 +∠2 = ∠4 + ∠5 + ∠3          ∠1 and ∠3 are vertically opposite angles.

∠2 = ∠4 + ∠5                           Proved

3 0
3 years ago
What is the y-intercept of y= -3x
dybincka [34]

Answer:

(0,0) is the y intercept

7 0
3 years ago
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