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3 years ago

FRREE BRAINLEST FREE FREE

Mathematics

1 answer:

Ainat [17]3 years ago

5 0

Answer:

ME ME ME ME!!!!!!!!!!!!!!!!

Step-by-step explanation:

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The numbers Of students in the four sixth-grade classes at Northside School are 26,19,,34,and 21.Use the properties to find the

Dafna11 [192]

Basically there are 3 addition properties and they are associative property, identity property, and commutative property.

Commutative property is just changing the order of the addends. Example: 26+19+34+21= 21+34+19+26

Identity Property is just adding a 0 to the number that doesnt change anything. Example: 26+19+34+21 +0 = 100

Associative property is just changing the grouping of the addends. Example: (26+19) + (34+21)

I know these properties may be complicated i know inhate them too haha but i hope i helped :) if you want you can search up the distributive property too but its with multiplication and addition combined and its harder but i think these are the 3 main properties.

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3 years ago

Can someone help me with 8-10

Leya [2.2K]

Svsgheydhhdjrjejrjjfjrjdhhdd

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2 years ago

what will the equation be for this "Ryan is saving money to buy a skateboard that costs $85. He has already saved $40. He plans

OLEGan [10]

Answer:

weir

Step-by-step explanation:

4 0

3 years ago

Lisa is cooking muffins. The recipe calls 7 cups of sugar. She has already put in 2 cups. How many more cups does she need to pu

jok3333 [9.3K]

Answer:

She needs to use 5 more cups of sugar for the muffins

Step-by-step explanation:

7-2=5

P.S. May I get brainly?

3 0

3 years ago

Almost all companies utilize some type of year-end performance review for their employees. Human Resource (HR) at a university's

balu736 [363]

Answer:

The Answer is 76.

Step-by-step explanation:

Given the normal distribution " 10% of employees (rated) exemplary, 20% distinguished, 40% competent, 20% marginal, and 10% unacceptable'', we can see that exemplary employees are top 10% rated employees.

We have the formula for normal distribution:

z=(X-M)÷σ

where z is the minimum z-score for top 10% employee, X is the minimum score for top 10% employee, M is the mean of the score distribution, σ is the standard deviation of the score distribution.

The z-score we are looking for is the value "a" that separates the highest 10% from the lowest 90% i.e. P(z≤a)=0.90

If we look at z-table, corresponding value for a is 1.28155

We can now put the values in the formula:

1.28155= $\frac{X-50}{20}$

So X=(1.28155×20)+50=75.631

Therefore minimum score for exemplary employee is 76.

3 0

3 years ago