Jerome surveyed 643 skateboarders and found that 209 of them preferred wood skateboards to plastic or aluminum skateboards. Based on the number of people surveyed, what is the most reasonable estimation of the percent of skateboarders who preferred wood skateboards?a)10%
b)30%
c)40%
d)50%

Answers

Answer 1

Answer: 30% , as:
Let the percentage of people preferring wooden skateboards be 'x'.
Therefore, x/100*643=209
x/100=209/643
x=209*100/643
x=20900/643
x=32.50.......
By rounding it off to 30, we get 30% as answer.

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Mr. House wrote 8 tenths minus 5 hundredths on the board. Maggie said the awnser is 3 hundredths because 8 minus 5 is 3. is she correct? explain.

Answers

Mr.House wrote 8 tenths minus 5 hundredths on the board. Maggie said the answer is3 hundredths because 8 minus 5 is 3. is she correct? Explain
First let’s identify the given word values:
=> 8 tenths - .8
=> minus 5 hundredths = - .05
She said that the answer is 3 hundredths = .03
Solution:
=> 0.8 – 0.05 = 0.75 not 0.03
why? Because they are in different place value. And 8 tenths = .80 5 hundredths= 0.05

Maggie is not correct.

Further explanation:

Given that Mr. House wrote 8 tenths minus 5 hundredths on the board.

Now, Maggie said that the answer is 3 hundredths because 8 minus 5 is equal to 3.

Our aim is to find whether Maggie is correct or not.

From place value chart, 10 tens is equal to 1 hundreds.

Then 3 hundreds is equal to 30 tens and 3 hundreds can be written as follows:

$3\left( {100}\right)=300$

30 tens can be written as follows:

$30\left({10}\right)=300$

From place value chart it is observed that tenths is greater hundredths.

Tenths are one place after the decimal and hundredths are two places after the decimal.

Eight tenths can be written in the form of decimal as follows:

$\frac{8}{{10}}=0.8$

Five hundredths can be written in the form of decimal as follows:

$\frac{5}{{100}}=0.05$

Now, subtract five hundredths from eight tenths as follows:

$0.8-0.05=0.75$

Then 8 tenths minus 5 hundredths can be written in the form of hundredths as follows:

$0.75=\frac{{75}}{{100}}$

Therefore, 8 tenths minus 5 hundredths is equal to 75 hundredths.

From the above explanation we can Maggie is not correct.

Thus, Maggie is not correct.

Learn more:

1. Learn more about equations brainly.com/question/788903

2. Learn more about algebraic expression brainly.com/question/5533462

3. Learn about place value chart brainly.com/question/1822996

Answer details:

Grade: Middle School

Subject: Mathematics

Chapter: Numbers

Keywords:

Maggie, Mr. House, hundreds, thousands, hundredths, thousandths, place value chart, decimal, greater, error, equivalent, numbers.

Only odd and I need explainations to

Answers

2 1/6+ 4 1/3=6 1/2 because you find the LCD and thats 6, then you get 2 1/6 + 4 2/6 which results to 6 3/6 and simplified it would be 6 1/2
Do the same thing with the rest and boom you got it

A recreational center has 15 basketballs and 12 soccer balls.What is the ratio of soccer balls to basketballs in simplest form?

Answers

15:12 = 1:4
Because 15:12 is This fraction is a IMPROPER FRACTION once the absolute value of the top number or numerator (15) is greater than the absolute value of the bottom number or denomintor (12). So, the equivalent fraction is a MIXED NUMBER which is made up of a whole number (1) and proper fraction (1/4).

Please help me I want to pull up my grade.

Answers

B c and d im sure hope this helps

The graph shows the solution to which system of equations?A)
y = x + 2 and y = -x - 4
B)
y = 3x + 7 and y = x + 12
C)
y = 2x - 3 and y = −2x + 1
D)
y = -x + 4 and y = −2x + 5

Answers

C. the pink line is positive, the green line is negative. each lime is going up or down two and over one. there the slope is 2/1 or more simply 2. C is the only answer with both lines with a slope of 2

How many faces has a hexagonal pyramid