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REY [17]
3 years ago
13

Solve each inequality and graph the solutions , ILL MARK BRAINLIST !!!!

Mathematics
1 answer:
inn [45]3 years ago
4 0

Answer:

see below

Step-by-step explanation:

2d+21 ≤11

Subtract 21

2d+21-21 ≤11 -21

2d ≤-10

Divide by 2

2d/2 ≤-10/2

d≤-5

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Answer:

<em>n = 20</em>

Step-by-step explanation:

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6 0
2 years ago
A book claims that more hockey players are born in January through March than in October through December. The following data sh
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Complete question :

Birth Month Frequency

January-March 67

April-June 56

July-September 30

October-December 37

Answer:

Yes, There is significant evidence to conclude that hockey​ players' birthdates are not uniformly distributed throughout the​ year.

Step-by-step explanation:

Observed value, O

Mean value, E

The test statistic :

χ² = (O - E)² / E

E = Σx / n = (67+56+30+37)/4 = 47.5

χ² = ((67-47.5)^2 /47.5) + ((56-47.5)^2 /47.5) + ((30-47.5)^2/47.5) + ((37-47.5)^2/47.5) = 18.295

Degree of freedom = (Number of categories - 1) = 4 - 1 = 3

Using the Pvalue from Chisquare calculator :

χ² (18.295 ; df = 3) = 0.00038

Since the obtained Pvalue is so small ;

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5 0
2 years ago
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Andrews [41]

Answer:

false

Step-by-step explanation:

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2 years ago
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3 years ago
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Step-by-step explanation:

y = Mx + c

4 = -2(-3)+ c

4 =6+ c

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6 0
2 years ago
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