Karin wants to use the distributive property to mentally find the value of 19⋅42+19⋅58. Which expression can she use?

Mathematics

2 answers:

Lisa [10]3 years ago

7 0

Answer : The expression she use can be, $19\times (42+58)$

Step-by-step explanation :

Distributive property Law : It says that multiplying a number by the group of numbers added together is the same as doing each multiplication separately.

For example:

3 × (2 + 4) = 3×2 + 3×4

As we are given the expression:

$19\times 42+19\times 58$

$\Rightarrow 19\times (42+58)$

Thus, the expression she use can be, $19\times (42+58)$

kolbaska11 [484]3 years ago

6 0

Answer:

19 x (42 + 58)

Step-by-step explanation:

The common term is 19

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Answer:

{13.7756,18.2244}

Step-by-step explanation:

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$M=Z*\frac{\sigma}{\sqrt{n}}=1.645*(\frac{8}{\sqrt{35}})=2.2244$

The formula for a confidence interval is $CI=\bar{x}+M$ where x-bar is the sample mean. Therefore, the 90% confidence interval for the mean amount of sushi pieces a person can eat is: