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tensa zangetsu [6.8K]
3 years ago
13

If a1= 7 and r=3, find a4

Mathematics
1 answer:
9966 [12]3 years ago
7 0

Answer:

a4 = 189

Step-by-step explanation:

Geometric sequence:

In a geometric sequence, the quotient r between consecutive terms is always the same.

The nth term of the sequence is given by:

a_n = a_1*r^{n-1}

In which a_1 is the first term.

In this question:

a_1 = 7, r = 3

The fourth term is:

a_4 = 7*3^3 = 189

So

a4 = 189

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2. Alicia is writing the program for a video game. For one part of the game she uses the rule to move points on the screen.
Gwar [14]

<em>Complete Question:</em>

<em>Alicia is writing the program for a video game. For one part of the game she uses the rule (x,y)->(x-3,y+4) to move points on the screen. </em>

<em>A) what output does the rule give when the input is (-6,0)? </em>

<em>B)What output does the rule give when the input is (3,-4)? </em>

<em>C) Is the rule a function? Explain why it is or why it is not </em>

Answer:

a. The output is (-9,4)

b. The output is (0,0)

c. See Explanation

Step-by-step explanation:

Given

Rule: (x,y)->(x - 3, y + 4)

Solving (a):

Inputs:

x = -6

y = 0

The outputs is as follows;

x => x - 3

x => -6 - 3

x => -9

y=> y + 4

y=> 0 + 4

y=> 4

Hence:

The output is (-9,4)

Solving (b):

Inputs:

x = 3

y = -4

The outputs is as follows;

x => x - 3

x=>3-3

x = 0

y=> y + 4

y=>-4+4

y=>0

Hence:

The output is (0,0)

Solving (c):

The function is a rule and the rule is that:

It shifts the graph left by 3 units and up by 4 units

5 0
2 years ago
(-2,-5)(-3,-6) slope
kakasveta [241]

Answer: Slope = 1

Step-by-step explanation:

Slope = <u>Y2 - Y1</u>   <u> -6 -- 5</u>      <u>-6 + 5</u>    = <u> -1</u>    =   1

              X2 - X1    -3 --2       -3 + 2       -1

3 0
2 years ago
The price of a laptop computer decreased from 475 to 275. What is the percent of decrease in price
anyanavicka [17]
First find the difference in prices...

475 - 275 = 200 so the price went down 200 dollars. No we need to find what percentage of 475 is 200.

475 × x = 200
x = 200/475
x = .4211

Now convert to percentage by multiplying by 100 (move decimal 2 places to the right)

.4211 = 42.11%

It is a 42.11% price reduction.
8 0
2 years ago
PLEASE ANSWER THIS QUICK, IF YOU CAN YOU GET BRAINLEST!!!!
lesya692 [45]

Answer:

6

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
(2/3) / (-1/2)<br> How do I divide these 2 fractions?
dsp73

Answer:

Step-by-step explanation:

2/3*(-2/1)

-\frac{4}3}

Hope it helps! Please mark Brainliest if it does!

4 0
2 years ago
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