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3 years ago

15

Factor 4x^2-36x+81 please help

1 answer:

SOVA2 [1]3 years ago

8 0

(2x-9)^2... determine terms that are alike

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What is the term of a 7-term geometric series if the first term is -11 the last term is -45,056 and the common ratio is -4

shutvik [7]

I assume you mean to ask how to find the sum of the seven terms?

You have

$a_2=ra_1$
$a_3=ra_2=r^2a_1$
$a_4=ra_3=r^3a_1$
...
$a_7=ra_6=r^6a_1$

So the sum is

$a_1+ra_1+r^2a_1+\cdots+r^6a_1=a_1(1+r+r^2+\cdots+r^6)=a_1\times\dfrac{1-r^7}{1-r}$

You know that $a_1=-11$ and $r=-4$ , so the sum is equal to

$-4\times\dfrac{1-(-4)^7}{1-(-4)}=-13108$

8 0

3 years ago

3. A big league pitching coach tries to limit his pitchers to 110 pitches per game. If the pitcher has

krek1111 [17]

110 minus 52 is 58 so the answer would be 58 more pitches

5 0

3 years ago

Miguel measured a house and its lot and made a scale drawing. The backyard, which is 40 feet wide in real life, is 20 inches wid

viva [34]

Answer:

Can you please post a picture?!

Step-by-step explanation:

4 0

3 years ago

Solve five ninths minus two sixths equals blank.

Oksanka [162]

Answer:

2/9

Step-by-step explanation:

5/9 -2/6 = 2/9

(decimal: 0.222222)

8 0

3 years ago

Read 2 more answers

Bob deposits $3000 into an account that pays simple interest at a rate of 5% per year. How much interest will he be paid in the

Setler [38]

Answer:

He will have paid 750 interest in the first five years.

Step-by-step explanation:

SI = P×R×T/100

3000 x 5 x 5 divided by 100

75000 / 100 = 750

4 0

3 years ago