- anonymous

- chestercat

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- anonymous

##### 1 Attachment

- misty1212

HI!!

- anonymous

hi

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## More answers

- misty1212

a) add 9
b) divide by 4
c) take the square root

- misty1212

don't forget the \(\pm\)

- Michele_Laino

if I add 9 to both sides, I get:
\[\Large 4{r^2} - 9 + 9 = 91 + 9\]
please simplify

- anonymous

4r^2=100

- Michele_Laino

ok! now I diveide by 4, both sides, so I get:
\[\Large {r^2} = \frac{{100}}{4}\]

- Michele_Laino

please simplify

- anonymous

25

- Michele_Laino

ok! now we have to take the square root of both sides, so we can write:
\[\Large r = \pm \sqrt {25} = ...\]

- anonymous

so now just the square root of 25?

- Michele_Laino

yes! please remember we have two values since we can write this:
(-5)^2= 25
(+5)^2=25

- Michele_Laino

so we can write:
\[\Large r = \pm \sqrt {25} = \pm 5\]

- anonymous

so the answer is

##### 1 Attachment

- anonymous

@Michele_Laino is C correct?

- anonymous

- Michele_Laino

yes! It is correct!

- anonymous

can u hrelp me with more please?

- Michele_Laino

ok!

- anonymous

*help

- anonymous

lol

- anonymous

##### 1 Attachment

- Michele_Laino

if we take the square root of both sides, we get:
\[\Large z + 7 = \pm \sqrt 3 \]

- Michele_Laino

now, I subtract 7 at both sides, so I get:
\[\Large z + 7 - 7 = \pm \sqrt 3 - 7\]
please simplify

- anonymous

z= 4

- Michele_Laino

no, since at the right side we have not 7-3, the the simplified expression is:
\[\Large z = - 7 \pm \sqrt 3 \]

- anonymous

so a?

- Michele_Laino

that's right!

- anonymous

more?

- anonymous

please?

- anonymous

##### 1 Attachment

- Michele_Laino

if we subtract 4 from both sides, I get:
\[\Large {x^2} - 12x + 36 - 4 = 4 - 4\]
please simplify

- anonymous

???

- Michele_Laino

what is 36-4=...?

- Michele_Laino

after that simplification, we can write this:
\[\Large {x^2} - 12x + 32 = 0\]

- anonymous

ok so whats the answer

- Michele_Laino

now we have to solve that equation. Do you know how to solve that quadratic equation?

- anonymous

nope

- anonymous

how?
@Michele_Laino

- anonymous

@Michele_Laino how do i?

- Michele_Laino

then we have to apply another method

- anonymous

kk how?

- Michele_Laino

we have to search for 2 numbers, such that their sum is 12 and their product is 32

- anonymous

8 4

- Michele_Laino

that's right!
so the requested factorization is:
\[\Large {x^2} - 12x + 32 = \left( {x - 8} \right)\left( {x - 4} \right)\]

- anonymous

so C?

- Michele_Laino

that's right!

- anonymous

##### 1 Attachment

- Michele_Laino

using the rule of the square of a binomial, we can write this:
\[\Large {y^2} + 14y + 49 = {\left( {y + 7} \right)^2}\]

- Michele_Laino

now:
for what values for y, we have
\[\Large {\left( {y + 7} \right)^2}=0\]

- Michele_Laino

if y= -7, what is (y+7)^2=...

- anonymous

- Michele_Laino

ok! so what is the requested value of y?

- anonymous

answer A?

- Michele_Laino

that value for y is y=-7, since
(-7+7)^2=0
so what is the right option?

- anonymous

a or b

- Michele_Laino

I think option d

- anonymous

u r right

- Michele_Laino

thanks! :)

- anonymous

hey quick question r u good at english too?

- Michele_Laino

I try, please keep in mind that I'm Italian

- anonymous

oh ok but you do know i mean grammar right?

- Michele_Laino

yes!

- anonymous

lol im stuck on complements

- Michele_Laino

ok! please post your question

- anonymous

Which describes the underlined word in the sentence?
The boys were playing a GAME of chess.
A.
direct object
B.
indirect object
C.
predicate adjective
D.
predicate nominative

- Michele_Laino

please wait I'm ponedering....

- anonymous

kk

- Michele_Laino

I think direct object, namely option A

- anonymous

i htought the same thing... more?

- Michele_Laino

ok!

- anonymous

more?

- Michele_Laino

ok!

- anonymous

Which describes the underlined word in the sentence?
The boys are (champions) at the game of chess.
A.
predicate nominative
B.
indirect object
C.
direct object
D.
predicate adjective

- anonymous

i think its A

- Michele_Laino

I'm pondering...

- anonymous

kk

- Michele_Laino

yes! that's right!

- anonymous

Which describes the underlined word in the sentence?
Rosalie loaned CINDY a vase for the flowers.
A.direct object
B.predicate adjective
C.predicate nominative
D.indirect object

- anonymous

i think its D

- Michele_Laino

yes! I think so!

- anonymous

Which describes the underlined word in the sentence?
Along with the flowers, Sally gave me a packet of seeds.
A.
predicate nominative
B.
indirect object
C.
predicate adjective
D.
direct object
I think its B

- Michele_Laino

please, what is the underlined part?

- anonymous

me

- Michele_Laino

yes! I confirm your option

- anonymous

Which describes the underlined word in the sentence?
The principal's voice is the SOUND of authority.
A.
indirect object
B.
predicate nominative
C.
predicate adjective
D.
direct object
i think it's either B or D

- Michele_Laino

I think direct object, namely option D

- Michele_Laino

please wait

- Michele_Laino

I think that the right option is B, namely "predicate nominative"

- anonymous

Which word is the indirect object in this sentence?
Since he hurt his foot, Corey gave her his skateboard to use.
A.
foot
B.
his
C.
Corey
D.
her

- anonymous

- anonymous

- misty1212

hi!

- misty1212

what do you need help with?

- anonymous

- anonymous

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