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posledela
3 years ago
14

Can you help me please A, B, C Or D?

Mathematics
2 answers:
prohojiy [21]3 years ago
6 0
It's b. because you have to add the ones in the parentheses then add that to the one outside the parentheses
gulaghasi [49]3 years ago
4 0
I believe is distributive property... 
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Find the mean of the following<br> data set.<br> 1,1,2,4,6,7,7,8,9,10,12,13,17,17,18
lisabon 2012 [21]

Answer:

8.8

Step-by-step explanation:

Add all numbers together to get 132

All number of numbers together to get 15

Divide the sum of all numbers by the number of numbers:

132/15

8.8

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2 years ago
Sides of a square is 3^2/7 what is the area of the square
nydimaria [60]
Area  = square of the measure of a side =   3^(2/7) * 3^(2/7)  

=  3 ^(2/7 + 2/7)  = 3^(4/7)

Option 2
6 0
3 years ago
Given that a = 1, b = 2, and C = -3, evaluate<br>ab²- ac²/ 2bc​
Firlakuza [10]

Answer:

5/12

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6 0
2 years ago
The hours a week people spend answering and sending emails is normally distributed with a standard deviation of Ï = 150 minutes.
storchak [24]

Answer:

sample size n would be 149305 large

Value of n (149305) is too high, this will be the practical problem with attempting to find this confidence interval

Step-by-step explanation:

Given that;

standard deviation α = 150 min

confidence interval = 99%

since; p( -2.576 < z < 2.576) = 0.99

so z-value for 99% CI is 2.576

E = 1 minutes

Therefore

n = [(z × α) / E ]²

so we substitute

n = [(2.576 × 150) / 1 ]²

n = [ 386.4 ]²

n = 149304.96 ≈ 149305

Therefore sample size would be 149305 large

Value of n is too high, that would be the practical problem with attempting to find this confidence interval

4 0
2 years ago
World forma Of 309017
Maurinko [17]
Three hundred nine thousand seventeen.
4 0
3 years ago
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