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adell [148]
3 years ago
12

Estimate the percentage: 6,683 of 20,489 a. 0.3% c. 3% b. 43.3% d. 33.3% Explain

Mathematics
2 answers:
Katarina [22]3 years ago
6 0

Answer:

b

Step-by-step explanation:

Alja [10]3 years ago
5 0

Answer:

D. 33.3%

Step-by-step explanation:

6683 divided by 20489 = 33%

estimated : 7000 divided by 20000 = 35 %

.333 (33 percent) times 20,489 = 6823

I hope this helps. I tried to do it quickly, so let me know if I messed up or you need more clarification.

You might be interested in
A CARPENTER SAWED A PIECE OF WOOD INTO 3 PIECES. THE RATIO OF WOOD PIECES IS 1:3:6. THE LONGEST PIECE IS 2.5 FEET LONGER THAN TH
IgorLugansk [536]
1 : 3 : 6

longest piece is 2.5 longer than the shortest piece.

let x be the shortest piece.

x + 2.5 is the longest piece

x/10 + 3/10 + (x+2.5)/10 = 1
x + 3 + x + 2.5 / 10 = 1
2x + 5.5 = 10
2x = 10 - 5.5
2x = 4.5
x = 4.5/2
x = 2.25  shortest piece.

x + 2.5 = 2.25 + 2.5 = 4.75 longest piece.

ratio of the 2nd piece to the 3rd piece is 3:6
2nd piece is half of the 3rd piece

4.75 x 1/2 = 2.375

1 : 3 : 6
2.25 : 2.375 : 4.75


8 0
4 years ago
Read 2 more answers
How do you find the cube root
zvonat [6]
Use a calculator to find the cube root of positive or negative numbers. Given a number x<span>, the cube root of </span>x<span> is a number </span>a<span> such that </span><span>a3 = x</span><span>. If </span>x<span> positive </span>a<span> will be positive, if </span>x<span> is negative </span>a<span> will be negative. Cube roots is a specialized form of our common </span>radicals calculator<span>.

</span>Example Cube Roots:<span>The 3rd root of 64, or 64 radical 3, or the cube root of 64 is written as \( \sqrt[3]{64} = 4 \).The 3rd root of -64, or -64 radical 3, or the cube root of -64 is written as \( \sqrt[3]{-64} = -4 \).The cube root of 8 is written as \( \sqrt[3]{8} = 2 \).The cube root of 10 is written as \( \sqrt[3]{10} = 2.154435 \).</span>

The cube root of x is the same as x raised to the 1/3 power. Written as \( \sqrt[3]{x} = x^{\frac{1}{3}} \). The common definition of the cube root of a negative number is that <span>
(-x)1/3</span> = <span>-(x1/3)</span>.[1] For example:

<span>The cube root of -27 is written as \( \sqrt[3]{-27} = -3 \).The cube root of -8 is written as \( \sqrt[3]{-8} = -2 \).The cube root of -64 is written as \( \sqrt[3]{-64} = -4 \).</span><span>

</span>This was not copied from a website or someone else. This was from my last year report.
<span>












































f -64, or -64 radical 3, or the cube root of -64 is written as \( \sqrt[3]{-64} = -4 \).The cube root of 8 is written as \( \sqrt[3]{8} = 2 \).The cube root of 10 is written as \( \sqrt[3]{10} = 2.154435 \).</span>

The cube root of x is the same as x raised to the 1/3 power. Written as \( \sqrt[3]{x} = x^{\frac{1}{3}} \). The common definition of the cube root of a negative number is that <span>
(-x)1/3</span> = <span>-(x1/3)</span>.[1] For example:

<span>The cube root of -27 is written as \( \sqrt[3]{-27} = -3 \).The cube root of -8 is written as \( \sqrt[3]{-8} = -2 \).The cube root of -64 is written as \( \sqrt[3]{-64} = -4 \).</span>
6 0
3 years ago
YThe Pew Research Center conducted a survey of 1007 adults and found that 85% of them know what Twitter is. Find a 90% confidenc
goblinko [34]

Answer:

The 90% confidence interval is   0.8315 <  p < 0.8685

Step-by-step explanation:

From the question we are told that

   The sample size is n =  1007  

    The sample proportion is  \^ p =  0.85

From the question we are told the confidence level is  90% , hence the level of significance is    

      \alpha = (100 - 90 ) \%

=>   \alpha = 0.10

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.645

Generally the margin of error is mathematically represented as  

      E = Z_{\frac{\alpha }{2} } * \sqrt{\frac{\^ p(1- \^ p)}{n}}

=>   E =1.645 * \sqrt{\frac{0.85 (1- 0.85 )}{1007}}

=>   E = 0.0185    

Generally 90% confidence interval is mathematically represented as  

      \^ p -E <  p <  \^ p +E

=>  0.85 -0.0185 <  p < 0.85 + 0.0185

=>  0.8315 <  p < 0.8685

6 0
3 years ago
Dont play with me just answer the question ;)
Anna [14]

Answer:

i think that the correct answer would be either B or D

Step-by-step explanation:

hopefully this helps

i am so so so sorry if the answer is wrong

8 0
3 years ago
Simplify: −2s − 9 + 7 − 5r use s = 3 and r =
egoroff_w [7]

Answer:

-2s - 9 + 7 - 5r

Step-by-step explanation:

Add -9 and -7.

-2s - 2 - 5r

Move -2.

-2s - 5r - 2

Reorder -2s and -5r.

-5r - 2s - 2

I hope this helps.

if you could, feel free to mark me Brainliest it would be much appreciated :D

8 0
3 years ago
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