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yanalaym [24]
3 years ago
15

What is (1\4 + 7\8) - 1\3

Mathematics
2 answers:
yulyashka [42]3 years ago
6 0
1) find the common denominator(bottom part of fraction) for the fractions inside of the parenthesis.


2) add what is inside of the parenthesis

3) common denominator for the answer inside the parenthesis and -1/3

4) subtract
(MOST IMPRTANT!!!!!!!: only add numerator or the top numbers)
Viefleur [7K]3 years ago
3 0
19/24 is the answer to your question.
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Adult men have heights with a mean of 69. 0 inches and a standard deviation of 2. 8 inches. find the z-score of a man who is 71.
Anarel [89]

The value of the z score is 1.03.

According to the statement

we have given that the value of mean and standard deviation and we have to find the value of the z score.

So, For this purpose we know that the

Z-score indicates how much a given value differs from the standard deviation. The Z-score, or standard score, is the number of standard deviations a given data point lies above or below mean.

And the given values are:

mean value = 69 inches

s.d value = 2.8 inches

And the value of x is 71.9 inches.

So, The Z score is

z = x - mean / standard deviation

substitute the values in it then

z = 71.9 - 69 / 2.8

then

z = 2.9 /2.8

z  = 1.03

So, The value of the z score is 1.03.

Learn more about Z Score here

brainly.com/question/25638875

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8 0
1 year ago
The sum of (a + b) + c is equal to the sum of a + ( b + c) as explained by the ————.
natima [27]

Answer:

It is distributive property

3 0
3 years ago
Read 2 more answers
Find the common ratio of the geometric sequence -18,126,-882
gtnhenbr [62]

Answer:

r = - 7

Step-by-step explanation:

The common ratio r is the ratio of a term to the preceding term, that is

r = 126 ÷ - 18 = - 882 ÷ 126 = - 7

5 0
3 years ago
Solve the system of equation by the addition method x-2y=11 and -x+6y =-31
Sonbull [250]

Answer: x = 1, y = - 5

Step-by-step explanation:

The given system of linear equations is expressed as

x - 2y = 11- - - - - - - - - - - - -1

- x + 6y = - 31- - - - - - - - - - - -2

We would eliminate x by adding equation 1 to equation 2. It becomes

- 2y + 6y = 11 - 31

4y = - 20

Dividing the the left hand side and the right hand side of the equation by 4, it becomes

4y/4 = - 20/4

y = - 5

Substituting y = - 5 into equation 1, it becomes

x - 2 × - 5 = 11

x + 10 = 11

Subtracting 10 from the left hand side and the right hand side of the equation, it becomes

x + 10 - 10 = 11 - 10

x = 1

3 0
3 years ago
Write the quadratic function in the form f (x) = a (x - h)? +k
seraphim [82]

Answer:

f(x) = -3(x - 5)^2 + 4

vertex (5,4)

Step-by-step explanation:

f(x) = -3x² +30x - 71

f(x) = -3(x² +-10x) - 71

f(x) = -3(x² +-10x+5^2-5^2) - 71

f(x) = -3(x² +-10x+5^2) -3(-5^2) - 71

f(x) = -3(x² +-10x+5^2) + 4

f(x) = -3(x - 5)^2 + 4

vertex (5,4)

5 0
3 years ago
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