MATHEMATICS MIDDLE SCHOOL

Write the first 3 numbers of the sequence. an=a1*r^n-1 an=2*(3)^n-1

Answers

Answer 1
Answer:

Answer:

2, 6, 18

Step-by-step explanation:

a_n=2(3)^(n-1)\n\n\text{Put n = 1, n = 2 and n = 3 to the equation:}\n\na_1=2(3)^(1-1)=2(3)^0=2(1)=2\n\na_2=2(3)^(2-1)=2(3)^1=2(3)=6\n\na_3=2(3)^(3-1)=2(3)^2=2(9)=18

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If the equation y=mx+b is used to model a quantity y as a function of the quantity x, why is b considered to be the starting value?

Answers

Answer:

This is because even when the quality of the variable x is 0, the value of b still exists and is the starting point for y.

Step-by-step explanation:

To prove this, we start with the base form of the equation and input 0 for x.

y = mx + b

y = m(0) + b

y = 0 + b

y = b

Help plzzz question 18

Answers

B can be either 6 or 4

The sales tax rate is 8%. If Jim bought a new Buick and paid a sales tax of $1,930, what was the cost of the Buick before the tax?

Answers

Let the price of the car = x.

8% of the price of the car is $1930.

We now translate the sentence into an equation using x as the unknown amount. Then we solve the equation to find x, the price of the car before tax.

8% * x = 1930

0.08x = 1930

x = 1930/0.08

x = 24,125

Answer: The price of the car before tax is $24,125.

How do you factor this equation?
2k2+9k+9

Answers

2k^2+9k+9

(2k+3)(k+3)


I hope that's help !

a wireless company offers two cell phone plans. Plan A charges 24.95 per month plus 0.10 per minute for calls. Plan B charges 19.95 per month plus 0.20 per minute. Use the questions to find when the two plans cost the same.

Answers

8 : 3 = 8k : 3k
8k + 3k = 22
11k = 22
k = 2
8k = 2 × 8 = 16
3k = 2 × 3 = 6

Simplify. 12 – (–2)(–4)

Answers

12 - (-2) (-4)

-2 * -4 = ?
A negative times a negative equals a positive value.

-2*-4 = 8

12 - 8 = ?

12-8 = 4

Because 4+8 = 12

Final answer:   4
12-(-2)(-4)
= 12-(2*4)
= 12- 8
= 4

The final answer is 4~
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