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2 years ago

How many proportional relationships are shown

Mathematics

1 answer:

Ratling [72]2 years ago

4 0

Answer:

2 I think thats the answer

Step-by-step explanation:

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Mary wants to fill in a cylinder vase. At the flower store they told her that the vase should be filled 3/4 for the flowers to l

Romashka [77]

Answer:

84.8 in³

Step-by-step explanation:

The formula for the volume of a cylinder is ...

V = πr²h

The volume Mary will be filling will be 3/4 of the 9-inch height of the vase, so is ...

V = π(2 in)²(3/4·9 in) = 27π in³ ≈ 84.8 in³

_____

<em>Comment on the answer</em>

In more conventional units of measure, that is very nearly 3 pints of water.

8 0

3 years ago

If Olivia makes a smoothie with a ratio 7 strawberries to 2 bananas, how many strawberries would she use with 3 bananas?

Leviafan [203]

Answer:

Step-by-step explanation:

7strawberries 2 bananas 3 and she use the 3 bananas

and answer is.13

5 0

2 years ago

Read 2 more answers

What is x? 1/2:10 x:1

julsineya [31]

Answer:

Step-by-step explanation:

there

5 0

3 years ago

Read 2 more answers

Among 320 randomly selected airline travelers, the mean number of hours spent travelling per year is 24 hours and the standard d

Ostrovityanka [42]

The margin of error of the random selection is 0.29

The given parameters are:

$n = 320$ --- the sample size

$\sigma = 2.9$ --- the standard deviation

$\bar x = 24$ --- the mean

$\alpha = 90\%$ --- the confidence level.

The margin of error (E) is calculated as follows:

$E = z \times \sqrt{\frac{\sigma^2}{n}}$

So, we have:

$E = z \times \sqrt{\frac{3.2^2}{320}}$

$E = z \times \sqrt{\frac{10.24}{320}}$

The z-value for 90% confidence level is 1.645.

Substitute 1.645 for z

$E = 1.645 \times \sqrt{\frac{10.24}{320}}$

$E = 1.645 \times \sqrt{0.032}$

Take square roots

$E = 1.645 \times 0.1789$

Multiply

$E = 0.2943$

Approximate

$E = 0.29$

Hence, the margin of error is 0.29