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timama [110]
2 years ago
11

A recursive rule for an arithmetic sequence is a1=4;an=an−1−3.

Mathematics
2 answers:
Elanso [62]2 years ago
5 0

Your Question: A recursive rule for an arithmetic sequence is a1=4;an=an−1−3.

What is the explicit rule for this sequence?

<h2>Answer: 3n + 1</h2>

Step-by-step explanation:

Nikitich [7]2 years ago
3 0
You can see the answer from the picture

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Tell whether each number is rational or irrational: Pi, -1/2, the square root of 2/3, and 0.57575757
DedPeter [7]
Pi: Irrational
√(2/3): Irrational

0.57575757 is rational 
and -1/2 is rational.
I hope this helps.
5 0
3 years ago
What is 321 over 100 in simplest form?
STatiana [176]
321 / 100 = 3.21 as you are dividing by 10, and then 10 again
4 0
3 years ago
Read 2 more answers
Enter the solution (x,y) to the system of equations shown.<br> y= -6<br> y= 4x+12
andriy [413]
Y= -6 --> plug this -6 into the y of the 2nd equation
y= 4x+12 --> -6 = 4x+12 --> 4x = -18
x = -18/4 = -9/2 --> now this is the x solution coordinate, and we know that y must equal -6 from the 1st equation, so our solution point is:
(-9/2, -6)
Hope that helped!
6 0
2 years ago
Read 2 more answers
The arch of a bridge forms the upper half of an ellipse. The arch is 6 meters above the 20-meter-wide river. Write an equation f
aksik [14]

Answer:

\frac{x^2}{36} + \frac{y^2}{100} = 1

Step-by-step explanation:

Required

The equation of the ellipse

This is calculated as:

\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1

Where:

b =6 ---- height

a = 0.5 * 20 =10 --- width

So:

\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1

\frac{x^2}{6^2} + \frac{y^2}{10^2} = 1

\frac{x^2}{36} + \frac{y^2}{100} = 1

3 0
2 years ago
Solve - 2/5x is less than or equal to 20
sashaice [31]

Answer:

x is less than or equal to 0

Step-by-step explanation:

- you need to multiply both sides of the inequality by 5/2

- then you reduce the numbers with the greatest common factor 5

- then you reduce the numbers with the greatest common factor 2

- any expression multiplied by 0 equals 0

- so you get x is less than or equal to 0

^^^ hope this helps! :)

8 0
3 years ago
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