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3 years ago

I don't understand how to solve this 9x^2 – 16 = 0

Mathematics

2 answers:

Ber [7]3 years ago

7 0

Answer:

You will be solving for X. x =4/9

Step-by-step explanation:

You start by adding 16 to both sides.

then you have 9x^2 = 16

take the square root of each side

so you are left with 9x=4

then you divide each side by 9 to find the value of x

in this case, x=4/9

kvasek [131]3 years ago

7 0

Answer:

(3x-4)(3x+4)

Step-by-step explanation:

a^ 2 − b^ 2 = ( a + b ) ( a − b )

9 x 2 − 16 = ( 3 x )^ 2 − ( 4 )^2

( 3 x )^2 − ( 4 )^2 = ( 3 x − 4 ) ( 3 x + 4 )

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Step-by-step explanation:

- - - - - - - - college - - not college - - - - total

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8 0

3 years ago

A. 37<br> B. 38<br> C. 39<br> D. 40

Dvinal [7]

Hello ^w^

I believe the answer you are looking for is A

I found this answer by adding up the lengths of all the sides.

S -> T = 8

S -> R = 7

Q -> R = 6

P -> Q = 6

P -> T = 10

10 + 6 + 6 + 7 + 8 -> 37

A -> 37

If I am incorrect, please inform me.

Have a good day!

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3 years ago

Harold stores 10,656 pounds of grain for his 24 cattle. Each cow eats about 12 pounds of grain each day. How many days would the

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3 years ago

PLEASE HELP!!!!!

Katena32 [7]

Answer:6018

Step-by-step explanation:

Given Sequence

$-282-266-250-234.....$

It represent an A.P. with

first term $a=-282$

common difference $d=16$

So sum of 51 term

$S_n=\frac{n}{2}[2a+(n-1)d]$

$S_{51}=\frac{51}{2}\times [2\times (-282)+(51-1)16]$

$S_{51}=\frac{51}{2}\times [-564+800]$

$S_{51}=\frac{51}{2}\times [236]$

$S_{51}=51\times 118$

$S_{51}=6018$

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4 years ago

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