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bixtya [17]
3 years ago
11

Out of 1,000 students, 80 were asked by random sampling what color they would prefer for their first car. Their responses are sh

own in the table below.

Mathematics
2 answers:
Tamiku [17]3 years ago
7 0

Answer:

175

Step-by-step explanation:

To find a proportion, you need to put both parts over the total.  You would put the part of silver (14) over the total (80) and the part you are trying to find (X) over the total number of students (1,000). Then you cross multiply 14 x 1,000 and divide by 80 giving you 175 silver cars.

iris [78.8K]3 years ago
3 0

Answer: First off, what answer are you looking for? it's hard for me to answer something without specification.

Step-by-step explanation:

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Can someone explain scientific notation to me? And also another question. Is 9.725 x 10^6 a scientific notation? What about 9.72
ELEN [110]

Both of those values are in scientific notation

Scientific notation is when we have numbers of the form a \times 10^b where 0 \le a < 10 and b is an integer.

Both 9.725 and 9.7250 are inside the inequality mentioned above.

Scientific notation is used to help describe very large numbers, or very small numbers, depending on context.

---------------

If you wanted to convert from scientific notation to standard notation, then you'll move the decimal point based on what the exponent is. The positive 6 means we move the decimal point 6 places to the right.

We go from 9.725 to 9,725,000 which is about 9.7 million

In other words, 9.725 \times 10^6 = 9,725,000

As another example, 1.23 \times 10^{11} = 123,000,000,000 = \text{123 billion} since we start at 1.23 and move the decimal point 11 spots to the right to arrive at 123,000,000 aka 123 billion.

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2 years ago
If f(a)=4a-5 what is f(3)-f(1.25)<br> a. -8<br> b. 7<br> c. 17<br> d. 32
Solnce55 [7]

c)17

Step-by-step explanation:

7 0
3 years ago
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liubo4ka [24]
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3 years ago
Arc are subtends a central angle measuring 3pi/5 radians . What fraction of the circumference is this arc?
Fofino [41]

Answer:

The arc is 3/10 of the circumference

Step-by-step explanation:

we know that

The complete circumference subtends a central angle of 2π radians

so

using proportion

Find out what fraction of the circumference represent an arc with a central angle of 3pi/5 radians

\frac{1}{2\pi}=\frac{x}{(3\pi/5)}\\\\x=\frac{(3\pi/5)}{2\pi}\\\\x=\frac{3}{10}

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3 years ago
I need help on these two questions.
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Hope this helps x is all ways the slope
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