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2 years ago

14

(x+y)^2 where x= 4 and y= -3

2 answers:

Aneli [31]2 years ago

6 0

1 is the answer cccccc

sesenic [268]2 years ago

5 0

(4+-3)^2
(4-3)^2
1*1
answer is 1

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10. An arithmetic sequence has this recursive formula. What is the explicit formula?

Mrrafil [7]

Answer:

$a_{n}=45-3n$

Step-by-step explanation:

Method 1:

Arithmetic sequence is in the form

$a_{n} =a_{1} +(n-1)d\\$

d is the common difference, can be found by:

$d=a_{n}-a_{n-1}=-3$

Subtituting the $a_{1}$ and $d$

You get:

$a_{n}=42+(-3)(n-1)=45-3n$

Method 2 (Mathematical induction):

Assume it is in form $a_{n}=45-3n$

Base step: $a_{1} =45-3(1)=42$

Inducive hypophesis: $a_{n}=45-3n$

GIven: $a_{n+1} =a_{n}-3$

$a_{n+1}=45-3n-3=45-3(n+1)$

Proved by mathematical induction

$a_{n}=45-3n$

5 0

2 years ago

Solve for n; 1.2n + 0.68 = 5

bulgar [2K]

Answer:

n= 18 over 5

Step-by-step explanation:

8 0

2 years ago

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Your class has 18 students. Exactly 2/3 of them say that, out of all their subjects, they like science the most. Which model sho

Aleksandr [31]

Ok so I need the models to answer this question.

5 0

2 years ago

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Solve for x:<br> - 3x – 9= - 1

rewona [7]

X = -8/3

Djchbcdsndosndh

5 0

2 years ago

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An airplane travel at a constant speed of 575 miles per hour.write and equation that can be used to determine the number of mile

Oxana [17]

Answer:

$m = 575h$

Step-by-step explanation:

Given

$Rate = 575 miles/hour$

Required

Determine the equation for the model

Represent the number of hours with h and the miles with m.

Using distance formula:

$Distance = Speed * Time$

In this case, it is:

$Miles = Rate * Hour$

So, we have:

$m = 575 * h$

$m = 575h$

3 0

2 years ago