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2 years ago

I don’t understand any of these, please can someone help

Mathematics

1 answer:

sveta [45]2 years ago

7 0

Answer:

you have to answer the question and then solve the question

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Find the first five terms of the sequence given the following recursive formula:

forsale [732]

Answer:

The first five terms are;

-3,-7,11,-29,69

Step-by-step explanation:

The recursive definition of the sequence is

$a_1=-3,$ , $a_2=-7$ and $a_n=a_{n-2}-2a_{n-1}$ .

When n=3, we obtain;

$a_3=a_{3-2}-2a_{3-1}$ .

$\implies a_3=a_{1}-2a_{2}$ .

$\implies a_3=-3-2(-7)$ .

$\implies a_3=11$ .

When n=4

$\implies a_4=a_{2}-2a_{3}$ .

$\implies a_4=-7-2(11)=-29$ .

When n=5

$\implies a_5=a_{3}-2a_{4}$ .

$\implies a_4=11-2(-29)=69$ .

Therefore the first five terms are;

-3,-7,11,-29,69

5 0

3 years ago

Solve for C: C-9(greater than or equal too sign)9

creativ13 [48]

Answer:

${ \tt{C - 9 \geqslant 9}} \\ \\ { \tt{C \geqslant 9 + 9}} \\ \\ { \rm{answer}} : \: { \tt{C \geqslant 18}}$

8 0

2 years ago

Please help its due soon its geometry

Anastasy [175]

Answer:

7, 7, 60, 60, 60

Step-by-step explanation:

When you draw the circles thhey all hhave radius AB so AB=AC=BC =7

and since all sides are congruent you have a equilateral treangle so all angles are equal to 180/3=60

5 0

3 years ago

Given the following equation, determine the solutions when y=0 for the function: y=(x+4)(x-3)

AysviL [449]

Answer:

x=-4 and x=3

Step-by-step explanation:

If y=0, then we use the Zero Product Property:

0=(x+4)(x-3)

x+4=0

x=-4

x-3=0

x=3

5 0

3 years ago

I need help on the problem #53 it asking to prove if it is an identity.

pav-90 [236]

Answer and workings can be found in the attachment below...

8 0

2 years ago