Question

@Abhisar @nincompoop @Michele_Laino
Can I get some help please? Question is attached.

Answer 1

HI!!

Answer 2

hi

Answer 3

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

Answer 4

don't forget the \(\pm\)

Answer 5

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

Answer 6

4r^2=100

Answer 7

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

Answer 8

please simplify

Answer 9

25

Answer 10

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

Answer 11

so now just the square root of 25?

Answer 12

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

Answer 13

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

Answer 14

so the answer is

Answer 15

@Michele_Laino is C correct?

Answer 16

@Michele_Laino

Answer 17

yes! It is correct!

Answer 18

can u hrelp me with more please?

Answer 19

ok!

Answer 20

*help

Answer 21

lol

Answer 22

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

Answer 23

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

Answer 24

z= 4

Answer 25

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

Answer 26

so a?

Answer 27

that's right!

Answer 28

more?

Answer 29

please?

Answer 30

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

Answer 31

???

Answer 32

what is 36-4=...?

Answer 33

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

Answer 34

ok so whats the answer

Answer 35

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

Answer 36

nope

Answer 37

how?
@Michele_Laino

Answer 38

@Michele_Laino how do i?

Answer 39

then we have to apply another method

Answer 40

kk how?

Answer 41

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

Answer 42

8 4

Answer 43

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

Answer 44

so C?

Answer 45

that's right!

Answer 46

using the rule of the square of a binomial, we can write this:

\[\Large {y^2} + 14y + 49 = {\left( {y + 7} \right)^2}\]

Answer 47

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

Answer 48

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

Answer 49

0 @Michele_Laino

Answer 50

ok! so what is the requested value of y?

Answer 51

answer A?

Answer 52

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

Answer 53

a or b

Answer 54

I think option d

Answer 55

u r right

Answer 56

thanks! :)

Answer 57

hey quick question r u good at english too?

Answer 58

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

Answer 59

oh ok but you do know i mean grammar right?

Answer 60

yes!

Answer 61

lol im stuck on complements

Answer 62

ok! please post your question

Answer 63

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

Answer 64

please wait I'm ponedering....

Answer 65

kk

Answer 66

I think direct object, namely option A

Answer 67

i htought the same thing... more?

Answer 68

ok!

Answer 69

more?

Answer 70

ok!

Answer 71

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

Answer 72

i think its A

Answer 73

I'm pondering...

Answer 74

kk

Answer 75

yes! that's right!

Answer 76

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

Answer 77

i think its D

Answer 78

yes! I think so!

Answer 79

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

Answer 80

please, what is the underlined part?

Answer 81

me

Answer 82

yes! I confirm your option

Answer 83

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

Answer 84

I think direct object, namely option D

Answer 85

please wait

Answer 86

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

Answer 87

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

Answer 88

@Michele_Laino

Answer 89

@misty1212

Answer 90

hi!

Answer 91

what do you need help with?