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Dennis_Churaev [7]
3 years ago
9

1. The explicit formula an = 2–5(n-1) represents an arithmetic sequence. Write the recursive

Mathematics
1 answer:
Ivahew [28]3 years ago
3 0

Answer:

a_n=2,\:a_n=a_{n-1}-5

Step-by-step explanation:

If you map the sequence out, you get the following values:

a = 1, a(n) = 2

a = 2, a(n) = -3

a = 3, a(n) = -8

As you can see, the first term is 2 and the sequence is decreasing by 5 each time. Therefore, the answer is D.

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Your parents charge a family ski trip of $3000 on a credit card, the simple interest rate is 20%. The charges are paid after 6 m
torisob [31]

Answer:

$300

Step-by-step explanation:

In this question, we are simply asked to calculate the simple interest on $3000, at a rate of 20% paid after 6 months.

We can do this as follows. Mathematically, it should be remembered that:

S.I = PRT/100

In this case, we lost out the individual values as follows:

P = $3000, R = 20% and T = 6 months = 0.5years, S.I = ?

We substitute the parameters into the equation:

S.I = (3000 * 20 * 0.5)/100 = $300

7 0
3 years ago
Which is a correct expansion of (2x+3)(2x^{2} -5)?
Travka [436]

Answer:

4x^{3} + 6x^{2} -10x -15

Step-by-step explanation:

(2x+3)(2x^{2} -5)

2x × 2x^{2} + 2x× (-5) + 3× 2x^{2} + 3 ×(-5)

=4x^{3} -10x + 6x^{2} -15

= 4x^{3} + 6x^{2} -10x -15

7 0
4 years ago
Sales= 768. comission rate= 4%. comission rate= ?
Marizza181 [45]

Answer: Commission rate = $30.72

Step-by-step explanation: For this problem we want to find the commission rate for sales that are a total of $768. The commission rate is 4%.

Convert 4% to a decimal. 4/100 = 0.04.

Now, multiply the sales by the decimal 0.04 to find the commission rate.

768 x 0.04 = 30.72, or $30.72 for the commission rate.

5 0
4 years ago
I need help on this ASAP!!!!
poizon [28]
A=A trapeze+ A rectangular trapeze 

A= (6.5+3.2)*4.5/2 + (1.8+4.5)*4.5/2= (9.7+6.3)*4.5/2=16*4.5/2=8*4.5=36 m^2
4 0
4 years ago
I need the answer fast pls
Dominik [7]

Answer:

C

Step-by-step explanation:

"each type of muffin" indicate the questions have variability

5 0
3 years ago
Read 2 more answers
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