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4 years ago

Help solve for r????

Mathematics

1 answer:

Aleonysh [2.5K]4 years ago

3 0

$\ \frac{66(r)}{22} - ( \frac{16}{16} - 1) = r + \frac{72}{3} \div 3 \\ \frac{3r}{1} - 0 = r + 72 \\ 3r = r + 72 \\ r = 36$

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Answer:

Step-by-step explanation:

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y/8 = 4

y/8 × 8 = 4 × 8

y = 32

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2 years ago

Write an expression for the sequence of operations described below. Multiply u by t, subtract the result from v, then triple wha

Triss [41]

Answer:

The expression is 3(v - ut)

Step-by-step explanation:

* Lets explain how to solve the problem

- There are some words we can change them to mathematics symbols

# Add ⇒ +

# Subtract ⇒ -

# Multiply ⇒ ×

# Divide ⇒ ÷

- Ex:

# Add x and 6 ⇒ x + 6

# Subtract 7 from y ⇒ y - 7

# Multiply 5 by m ⇒ 5 × m = 5m

# Divide n by 2 ⇒ n ÷ 2 = n/2

* Lets solve the problem

- We want to write an expression for the sequence of operations

described below

- Multiply u by t, subtract the result from v, then triple what you have

* Lets make these operations

- Multiply u by t

∴ u × t = ut

- Subtract the result from v

- Means take ut from v, so v will come first

∵ The result is ut

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∵ we have (v - ut)

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7 0

3 years ago

Read 2 more answers

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kodGreya [7K]

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2 years ago

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NemiM [27]

Answer:

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And the answer for this case would be :

$s= 3.81$ after round the value

Step-by-step explanation:

We have the following data set given:

31, 33, 36, 41, 34

If we want to find the standard deviation we need to find first the sample mean with this formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X = \frac{31+33+36+41+34}{5}= \frac{175}{5}= 35$

Now we can find the sampel deviation with this formula:

$s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And replacing we got:

$s =\sqrt{\frac{(31-35)^2 +(33-35)^2 +(36-35)^2 +(41-35)^2 +(34-35)^2}{5-1}} =3.808$

And the answer for this case would be :

$s= 3.81$ after round the value

6 0

4 years ago