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valentinak56 [21]
3 years ago
11

Which is a rational number?   A.9   B. 15   C. 28   D. 52

Mathematics
1 answer:
Law Incorporation [45]3 years ago
5 0
A rational number is a number that can be expressed as a fraction, therefore all integers are rational numbers
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Write a rule for the nth term of the geometric sequence for which a1=−6 and a5=−486
patriot [66]

The geometric rule for the nth term of the geometric sequence for which a1 =−6 and a5=−486 is -6 × 3^(n - 1)

<h3>The nth term of a geometric sequence</h3>

First term, a1 = -6

Fifth term, a5 = -486

a5 = ar^(n - 1)

-486 = -6 × r^(5-1)

-486 = -6r⁴

r⁴ = -486 / 6

r⁴ = 81

r = 4√81

r = 3

Geometric rule:

nth term = ar^(n-1)

nth term = -6 × 3^(n - 1)

Learn more about geometric sequence:

brainly.com/question/24643676

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7 0
2 years ago
Help with this one!!!<br><br><br> Show steps please:)
Ymorist [56]
<h3>Answer:  7.20</h3>

Work Shown:

18% = 18/100 = 0.18

18% of 40 = 0.18*40 = 7.20

4 0
3 years ago
Read 2 more answers
Write an explicit formula for the sequence and find the 18th term.<br> -4, 12, -36...
Molodets [167]

Answer:

an = -4 * (-3)^ (n-1)

513560652

Step-by-step explanation:

We can find the common ratio

12/-4 = -3

r =-3

The explicit formula is

an =a1 r^(n-1)

an = -4 * (-3)^ (n-1)

We want the 18 th term

a 18 = -4 (-3) ^ 17

        513560652

4 0
2 years ago
Read 2 more answers
Find the least common multiple of 3x and 3(x-2).
larisa [96]

Answer:

the least common multiple is 3 x ( x − 2 )

Step-by-step explanation:

7 0
3 years ago
Which equation has solution x = -3? *
Alex73 [517]

Answer:

1/2(2x-6)= -6

Step-by-step explanation:

Multiply the two sides by the equation 2

2x-6=12

move the constant to the right hand side change sign

2x = -12 + 6

calculate the sum

2x= -6

Divide the 2 sides by 2

x= -3

8 0
2 years ago
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