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3 years ago

Calculating Mean Absolute Deviation

Mathematics

2 answers:

mezya [45]3 years ago

4 0

Answer:mean 33

Step-by-step explanation:

mad 6

Rus_ich [418]3 years ago

3 0

Answer:

mean =33

mad = 6

Step-by-step explanation:

First we need to find the mean

Add up all the numbers and divide by the number of numbers)

(29+ 20+ 36+ 44+ 30+ 32+ 40)/7

231/ 7

To find the mean absolute deviation

take the positive difference for each term and then divide by the number of terms

((33-29)+ (33-20)+ (36-33)+ (44-33)+ (33-30)+ (33-32)+ (40-33))/7

42/7

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tigry1 [53]

Answer:

It would be about 17

Step-by-step explanation:

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3 years ago

A silversmith combined pure silver that cost $33.48 per ounce with 51 oz of a silver alloy that cost $24.35 per ounce. How many

Pavlova-9 [17]

Answer:

$38.31

Step-by-step explanation:

Given:

Pure silver that cost $33.48 per ounce used to form $24.35 alloy/ounce.

Question asked:

How many ounces of pure silver were used to make an alloy of silver costing $27.87 per ounce?

Solution:

At cost $24.35/ounce, pure silver is mixed = $33.48

At cost $1/ounce, pure silver is mixed = $\frac{33.48}{24.35}$

At cost $27.87/ounce, pure silver is mixed = $\frac{33.48}{24.35}$ $\times 27.87 = \frac{933.08}{24.35} = 38.31$

Thus, $38.31 ounces of pure silver were used to make an alloy of silver costing $27.87 per ounce.

5 0

3 years ago

Find the formula for an exponential function that passes through the two points given.

goldenfox [79]

Answer:

$y = 7(3^x)$

Step-by-step explanation:

Given

$(x_1,y_1) = (0,7)$

$(x_2,y_2) = (4,567)$

Required

Determine the formula

An exponential function is of the form:

$y = ab^x$

For point $(x_1,y_1) = (0,7)$

$7 = ab^0$

$7 = a*1$

$7 = a$

$a = 7$

For point $(x_2,y_2) = (4,567)$

$567 = ab^4$

Substitute 7 for a

$567 = 7*b^4$

Divide both sides by 7

$81 = b^4$

Take 4th root of both sides

$\sqrt[4]{81} =\sqrt[4]{b^4}$

$\sqrt[4]{81} =b$

$b = \sqrt[4]{81}$

$b = 3$

Substitute 7 for a and 3 for b in $y = ab^x$

$y = 7 * 3^x$

$y = 7(3^x)$

3 0

3 years ago

Please help me!!! Its math and I am struggling

Romashka-Z-Leto [24]

Answer:

16:36 = 32:72 = 12:27

Step-by-step explanation:

An easy way for me to solve this is to divide the first value by the second. If they turn out to be the same fraction, then they are equivalent.

Is 16:36 = 32:72?

Yes, because $\frac{16}{36}=\frac{4}{9} =\frac{32}{72}$

Is 16:36 = 12:27?

Yes, because $\frac{16}{36}=\frac{4}{9} =\frac{12}{27}$

Is 16:36 = 3:4?

No because $\frac{16}{36}=\frac{4}{9} \neq \frac{3}{4}$

I hope this helps!!! Please rank if it does and let me know if you have any more questions about this!

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3 years ago

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4 years ago

Read 2 more answers