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Ratling [72]
3 years ago
11

Reba needs to simplify the expression below.

Mathematics
1 answer:
lawyer [7]3 years ago
5 0

Answer:

6.5

Step-by-step explanation:

6.5+(3.5*2)-7/3

6.5+(7-7)/3

6.5+0/3

6.5+0

6.5

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vovangra [49]
B. is the answer I believe since most are not functions
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An Xbox that normally sells for $390 is on sale at a 30% discount. What is the sale price of the Xbox?
schepotkina [342]
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8 0
3 years ago
From a population of 200,000,000 elements, the standard deviation is known to be 14. A sample of 49 elements is selected. It is
Talja [164]

Answer:

The standard error of the mean = 2

Step-by-step explanation:

Given that:

The standard deviation σ = 14

The sample size n = 49

The sample mean \overline x = 56

The formula for calculating the standard error can be expressed as:

S.E = \dfrac{\sigma}{\sqrt{n}}

S.E = \dfrac{14}{\sqrt{49}}

S.E = \dfrac{14}{7}

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Therefore, the standard error of the mean = 2

4 0
3 years ago
Please help solve equation
gregori [183]
<h2><u>Solution</u> :-</h2>

Height of Eric = 6 + 1/6 feet

= 37/6 feet

Height of his brother = 5 + 3/4 feet

= 23/4 feet

Difference between their height :

= 37/6 - 23/4

= (74 - 69)/12

= 5/12

<u>Hence</u>,

Eric is 5/12 feet taller than his brother.

3 0
3 years ago
Avery had $25.56 in her wallet. If she bought lunch with dollars from her wallet, how much money did she have in her wallet afte
natali 33 [55]

Answer:

$25.56

Step-by-step explanation:

we are not told how much she spent for her lunch.

5 0
4 years ago
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