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3 years ago

Note: Figure is not drawn to scale.

1 answer:

8 0

First you have to know the equation which would be V=πr^2h so then you would plug each number in to get V=(3.14)*(4^2)*(13) which would get you V=(3.14*16)*(13) which equals V=50.24*13 which gives you V=653.12 so your answer is
V=653.12

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I don't really get this the one on the bottom but you use the top to solve

Vera_Pavlovna [14]

The percentages for each acid are:

0% acid ⇒ percentage disolved = 0%
33% acid ⇒ percentage disolved = 1%
66% acid ⇒ percentage disolved = 2%
100% acid ⇒ percentage disolved = 4.2%

<h3>How to get the percentages?</h3>

Here we just need to use the given formula:

$percent\ disolved = \frac{initial\ mass - \ final \ mass}{initial \ mass}*100 \%$

For the 0% acid, the initial and final mass are the same:

initial mass = final mass = 10.3g

Then the percent dissolved is:

$percent\ disolved = \frac{10.3g - 10.3g}{10.3g}*100 \% = 0 \%$

For the 33% acid we have:

initial mass = 10.1g
final mass = 10g

Then:

$percent\ disolved = \frac{10.1g - 10g}{10.1g}*100 \% = 1 \%$

For the 66% acid:

initial mass = 10g
final mass = 9.8g

$percent\ disolved = \frac{10g - 9.8g}{10g}*100 \% = 2 \%$

for the 100% acid:

initial mass = 9.9g
final mass = 9.5g

$percent\ disolved = \frac{9.9g - 9.5g}{9.9g}*100 \% = 4.2 \%$

If you want to learn more about percentages:

brainly.com/question/843074

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5 0

2 years ago

Can someone help me do this question :(

Katen [24]

Answer:

20 is the answer

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

23. The price of jeans was reduced $6 per week

ohaa [14]

Answer:

$42

Step-by-step explanation:

Every week, the price of jeans reduced by $6.

The total value of price reduction over the 7-week period can be calculated as the product of price reduction per week and the number of weeks. Thus,

Total price reduction = price reduction per week x number of weeks

= $6 x 7

=$ 42

4 0

3 years ago

Select the equation that most accurately depicts the word problem. Jim weighs 30 pounds less than Tom, and together they weigh 2

Amiraneli [1.4K]

<span>n=toms weight

(n-30)=jims weight

and together they weigh 210

so it would be (n - 30) + n = 210</span><span>
</span>

4 0

3 years ago

What is the slope for -3 , -2.5

weqwewe [10]

Answer:

Is there only one coordinate point? is that all the information you got?

7 0

3 years ago