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Paha777 [63]
2 years ago
9

15% of 20 is ____ find the percentage of the number

Mathematics
2 answers:
Aliun [14]2 years ago
6 0
The answer is 3, just do 20*0.15 (covert 15% into a decimal).
Allisa [31]2 years ago
5 0

Answer:

3

Step-by-step explanation:

x              15

------  =   -----

20          100

20x5 is 100

What times 5 is 15? 3

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What is the porosity of the gravel sample?(The sediment volume for each sample is 400ml. ) a. 23. 75% b. 28. 75% c. 55. 75% d. 8
Anna [14]

The porosity of the gravel sample is 28.75%

We have to determine.

What is the porosity of the gravel sample?

<h3>The porosity of the gravel sample;</h3>

Porosity is the term which is defined as the volume of voids present in the soil to the total volume of the soil.

The formula used to calculate the Porosity is;

\rm Porosity =\dfrac{Volume \ of \ voids \ present \ in soil}{Volume \ of \ soil}

A sponge is a case of a permeable fabric because it incorporates a huge number of purge spaces compared to its volume.

Porosity is the property of a question that communicates the entire volume of purge or pore space within the material.

Hence, the porosity of the gravel sample is 28.75%

Learn more about "porosity" :

brainly.com/question/2593663

4 0
1 year ago
Plz i need help walk me through it, thanks​
SVETLANKA909090 [29]

Answer:

p=36^{\circ}

Step-by-step explanation:

We can prove that a tangent will always be perpendicular to the radius touching it. So, the other angle in the diagram is 90^{\circ}.

Because all the angles of a triangle sum to 180^{\circ}, we have that p+54+90=180.

We combine like terms on the left side to get p+144=180.

We subtract 144 on both sides to get p=36.

So, \boxed{p=36^{\circ}} and we're done!

6 0
2 years ago
What is sinB?<br>15/17 <br>8/17<br>8/15<br>15/8<br>​
dusya [7]

Answer:

817

Step-by-step explanation:

7 0
2 years ago
Solve for x.<br> 14 = 28 + 7x
xenn [34]

Answer:

X = 2

Step-by-step explanation:

14= 28 + 7x

28 - 14 = 7x

14 = 7x

14 / 7

2 = x

8 0
3 years ago
Read 2 more answers
Suppose we have a regression line where the intercept is 0.24 and the slope is 0.87. Our variable of interest is x. Suppose the
S_A_V [24]

Answer:

Step-by-step explanation:

Margin of Error = Zcritical * Standard error

Zcritical at 5% confidence interval

Z0.065

5 0
3 years ago
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