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ddd [48]
3 years ago
11

Help me and be brainiest

Mathematics
1 answer:
Papessa [141]3 years ago
7 0
This is what I got. I don’t know if it’s 100% right but I think it is.

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What’s the domain and range of this graph?
avanturin [10]

Given:

The graph of a downward parabola.

To find:

The domain and range of the graph.

Solution:

Domain is the set of x-values or input values and range is the set of y-values or output values.

The graph represents a downward parabola and domain of a downward parabola is always the set of real numbers because they are defined for all real values of x.

Domain = R

Domain = (-∞,∞)

The maximum point of a downward parabola is the vertex. The range of the downward parabola is always the set of all real number which are less than or equal to the y-coordinate of the vertex.

From the graph it is clear that the vertex of the parabola is at point (5,-4). So, value of function cannot be greater than -4.

Range = All real numbers less than or equal to -4.

Range =  (-∞,-4]

Therefore, the domain of the graph is (-∞,∞) and the range of the graph is (-∞,-4].

3 0
3 years ago
For the data set 4, 5, 10, 11, 15, the mean, x, is 9. What is the standard
stich3 [128]

Answer:

4.53

Step-by-step explanation:

Given the data :

4, 5, 10, 11, 15

The mean = 9

The standard deviation of a sample :

s = √[Σ(x - mean)²/(n-1)]

s = √[((4-9)² + (5-9)²+(10-9)² + (11-9)² + (15-9)²) / (5-1)]

s = √(25+16+1+4+36)/4

s = √20.5

s = 4.527

s = 4.53

5 0
3 years ago
I need the answers bad !
11111nata11111 [884]

Answer:

I maybe could help you a little bit It seems the the angles <1 and < 3 are the same so I would suspect that < 3 would also be 126 degrees but same goes for < 2 and < 4  

Step-by-step explanation:

Im sorry I hope this helps a little

8 0
3 years ago
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Dahasolnce [82]
Bro I got no clue
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6 0
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How do you write 60% as a decimal?​
schepotkina [342]

Answer:

0.6

Step-by-step explanation:

8 0
3 years ago
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