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masya89 [10]
3 years ago
15

For the geometric sequence: 112.5, 225, 450, 900,..., find the 21st term.

Mathematics
1 answer:
ch4aika [34]3 years ago
3 0

Answer:

Step-by-step explanation:

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NEED HELP
lawyer [7]

Answer:

80, 40, 40

Step-by-step explanation:

The rule is if the number before the tens place is 5 or more round up and if it is 4 or less round down.

I like to look at it without the rule and what makes sense.

82.14:  my choices are 80 or 90.  What number is 82.14 closer to on the number line?  80.

38.5  The choices are 30 and 40.  This number on a number line would be closer to 40

41.3  The choices are 40 and 50.  On a number line this number would be closer to 40.

4 0
1 year ago
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Please help ASAP! Will give BRAINLIEST! Please read the question THEN answer correctly! No guessing.
sweet [91]

Answer:

  D.  Minimum at (3, 7)

Step-by-step explanation:

We can add and subtract the square of half the x-coefficient:

  y = x^2 -6x +(-6/2)^2 +16 -(-6/2)^2

  y = (x -3)^2 +7 . . . . . simplify to vertex form

Comparing this to the vertex for for vertex (h, k) ...

  y = (x -h)^2 +k

We find the vertex to be ...

  (3, 7) . . . . vertex

The coefficient of x^2 is positive (+1), so the parabola opens upward and the vertex is a minimum.

5 0
3 years ago
State the value of the discriminant for <br><br>y = <img src="https://tex.z-dn.net/?f=5x%5E2%2B9x-3" id="TexFormula1" title="5x^
Nostrana [21]

Answer:

141, meaning that there will be two real solutions

Step-by-step explanation:

The discriminant of a quadratic is b^2-4ac, which in this case is:

9^2-4(5)(-3)=81+60=141

Since the discriminant is positive and not zero, there will be two real solutions to this equation. This is because when the discriminant is negative, and you take the square root of it, you get a negative number. If you take the square root of 0, you get 0, which means that there will only be one solution to the equation.

Hope this helps!

3 0
3 years ago
A line passes through the points (8,–7) and (6,–3). What is its equation in slope-intercept form?
Verdich [7]

Answer:

Step-by-step explanation:

A line passes through the points (8,–7) and (6,–3). What is its equation in slope-intercept form

4 0
2 years ago
How many times does 15 go into 270
olga2289 [7]
 its a decimal but....5.4 times 
8 0
3 years ago
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