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Romashka [77]
3 years ago
15

2 2/3 of what number is 6 1/7

Mathematics
1 answer:
borishaifa [10]3 years ago
6 0

2\frac{2}{3} of 2\frac{17}{56} is 6\frac{1}{7}

Solution:

Given 2\frac{2}{3} of what number is 6\frac{1}{7}.

Let us first convert the mixed fraction into improper fraction.

$2\frac{2}{3}=\frac{(2\times3)+2}{3}=\frac{8}{3}

$6\frac{1}{7}=\frac{(6\times7)+1}{3}=\frac{43}{3}

Now, let us take the unknown number be x.

$2\frac{2}{3}\times x=6\frac{1}{7}

$\frac{8}{3}\times x=\frac{43}{7}

Do the cross multiplication.

$ x=\frac{43}{7}\times\frac{3}{8}

$ x=\frac{43\times3}{7\times8}

$ x=\frac{129}{56}

Now, again change the improper fraction into mixed fraction.

$ x=2\frac{17}{56}

Hence 2\frac{2}{3} of 2\frac{17}{56} is 6\frac{1}{7}.

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Common ratio for 64,-16,4,-1
Gala2k [10]

Answer:

-1/4

Step-by-step explanation:

Multiplying 64 by -1/4 results in -16;

mult. -16 by -1/4 results in 4,

and so on.

The common ratio is -1/4.

5 0
3 years ago
The overhead reach distances of adult females are normally distributed with a mean of 205 cm205 cm and a standard deviation of 8
bekas [8.4K]
A) the probability is 0.123 or 12.3%.
B) the probability is 0.8589 or 85.89%.
C) the normal distribution can be used even though the sample is small because the population the sample is taken from is normally distributed.

Explanation
A) We first find the z-score that corresponds with this value.
z=\frac{X-\mu}{\sigma}
\\
\\=\frac{215-205}{8.6}= 1.1628

Using a z-table (http://www.z-table.com) we find 1.16; this corresponds to a probability of 0.8770.  However, This is the probability that a number will be lower than this; since we want the probability that the value is higher, we subtract from 1:

1-0.8770 = 0.123.

B) To find the probability of a sample mean, we use the formula
z=\frac{X-\mu}{\frac{\sigma}{\sqrt{n}}}
\\
\\=\frac{202.8-205}{\frac{8.6}{\sqrt{15}}}=-0.9908

Looking in our z-table we see that this corresponds with 0.1611.  Again, however, this is the area left of this value, which is the probability below; we want the probability above, so we subtract from 1:

1-0.1611 = 0.8589
5 0
3 years ago
Use the greatest common factor and the distributive property to write equivalent expressions in factored form.
Marta_Voda [28]

Answer:

ab(28) or 28ab

Step-by-step explanation:

13ab + 15ab = 28ab

8 0
2 years ago
Read 2 more answers
What is the equation of the line for this function? (0,0), (2,1), (4,2), (6,3).
slava [35]

The coordinate set (0, 0), (2, 1), (4, 2), (6, 3) represents a straight line. Since the first point is (0, 0) the y-intercept is 0. Now, lets solve for the slope (we can use any of the four points to solve).

Slope formula: y2-y1/x2-x1

= 2-1/4-1

= 1/2

Now that we know what the slope is, we can write the equation of the line.

Slope intercept form: y = mx + b (m = slope and b = y-intercept)

y = 1/2x

Lets find the exponential equation for the line.

y = ab²

1 = ab²

1/a = ab²/a

1/a = b²

√1/a = √b²

√1/a = b

<em>A graph of the coordinates will be below.</em>

<em />

Best of Luck!

4 0
2 years ago
Read 2 more answers
A taxi cab in myrtle beach charges $2 per mile and $1 for every person. If a taxi cab ride for two people costs $12, how far did
Oxana [17]

Answer:

5 Miles

Step-by-step explanation:

5 Miles = 1 Miles = $2 X 5 = $10

1 Person = $1

Therefore 2 People = $1 X 2

6 0
3 years ago
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