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2 years ago

Add 2 to 5, then multiply 3 by the result

Mathematics

2 answers:

Nostrana [21]2 years ago

7 0

Answer:

Step-by-step explanation:

Step 1: add 2 to 5

=> 2 + 5

=> 7

Step 2: Multiply the result by 3:

=> 7 * 3

=> 21

Therefore the final answer = 21

Hope this helps!

levacccp [35]2 years ago

4 0

2+5=7
7 times 3= 21
21 is the answer
Your welcome

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Cat este 2^10????plass

lina2011 [118]

2 ^ 10 = 2¹⁰ = 1,024 .

2 ^ 10 este (2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 ) (10 veces) tambien.

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3 years ago

6a - 5b when a = -3 and b = 4

DIA [1.3K]

Given.

6a - 5b

Plug in values.

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3 years ago

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the performance score of 10 adults is recorded, and the results are 83 87 90 92 93 100 104 111 115 121 find the standard deviati

luda_lava [24]

Answer:

The standard deviation of the data set is $\sigma = 12.7906$ .

Step-by-step explanation:

The Standard Deviation is a measure of how spread out numbers are. Its symbol is σ (the greek letter sigma)

To find the standard deviation of the following data set

$\begin{array}{cccccccc}83&87&90&92&93&100&104&111\\115&121&&&&&&\end{array}$

we use the following formula

$\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{X}\right)^2 }}{n-1} }$

Step 1: Find the mean $\left( \overline{X} \right)$ .

The mean of a data set is the sum of the terms divided by the total number of terms. Using math notation we have:

$Mean = \frac{Sum ~ of ~ terms}{Number ~ of ~ terms}$

$Mean = \frac{Sum ~ of ~ terms}{Number ~ of ~ terms}=\frac{83+87+90+92+93+100+104+111+115+121}{10} \\\\Mean = \frac{996}{10} =\frac{498}{5}=99.6$

Step 2: Create the below table.

Step 3: Find the sum of numbers in the last column to get.

$\sum{\left(x_i - \overline{X}\right)^2} = 1472.4$

Step 4: Calculate σ using the above formula.

$\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{X}\right)^2 }}{n-1} } = \sqrt{ \frac{ 1472.4 }{ 10 - 1} } \approx 12.7906$

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3 years ago

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grigory [225]

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2 years ago

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Audryn left a $12 tip on a $68.73 restaurant bill. What percent tip did she leave? Round to the nearest tenth of a percent.

Andrew [12]

Well, if we take 68.73 as the 100%, how much is 12 of it in percentage?

well $\bf \begin{array}{ccllll}
amount&\%\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
68.73&100\\
12&x
\end{array}\implies \cfrac{68.73}{12}=\cfrac{100}{x}$

solve for "x"

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2 years ago

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