Question

Is anyone really good at 8th grade math?

Answer 1

Yes?

Answer 2

question? :)

Answer 3

(07.01 LC)
What is the value of y in the equation 4 + y = –3? (1 point)


7
1
–1
–7
2. (07.01 MC)
Mona solved an equation incorrectly, as shown below:

Step 1: 5x = 30

Step 2: x = 30 – 5

Step 3: x = 25

Which statement best explains why Step 2 is incorrect in Mona's solution? (1 point)



She did not add 5 to 30.
She did not divide 30 by 5.
She did not multiply 30 by 5.
She did not multiply 30 five times.
3. (07.02 LC)
How many solutions does the equation –2y + 2y + 3 = 3 have? (1 point)


One
None
Infinitely many
Three
4. (07.02 MC)
What is the value of x in the equation 4(2x + 14) = 0? (1 point)


9
7
–7
–9
5. (07.02 MC)
An equation is shown below:

4(2x – 3) = 1

Which of the following correctly shows the first two steps to solve this equation? (1 point)


Step 1: 6x – 7 = 1; Step 2: 6x = 8
Step 1: 6x + 1 = 1; Step 2: 6x = 0
Step 1: 8x – 12 = 1; Step 2: 8x = 13
Step 1: 8x – 3 = 1; Step 2: 8x = 4
6. (07.03 LC)
How many solutions does the equation 4y – 4y – 12 = 14 – 2 have? (1 point)


One
Zero
Two
Many
7. (07.03 LC)
The steps below show the incomplete solution to find the value of x for the equation 8x – 3x – 1 = –2 + 16:

Step 1: 8x – 3x – 1 = –2 + 16

Step 2: 8x – 3x – 1 = 14

Step 3: 5x – 1 = 14

Which of these is most likely the next step? (1 point)


5x = 14
5x = 10
5x = 13
5x = 15
8. (07.03 MC)
What is the value of y in the equation 2(3y + 7 + 5) = 196 – 16? (1 point)


13
14
26
28
9. (07.03 MC)
What is the solution to the following equation?

5(2x – 14) + 23 = 7x – 14 (1 point)


11
14
30
36
10. (07.05 LC)
What is the value of a in the equation a = 2 + 3a + 6? (1 point)


–8
–4
4
8
11. (07.05 LC)
How many solutions does the equation 3x + 6 = –1 – 3 + 4x have? (1 point)


Two
None
One
Infinitely many
12. (07.05 MC)
Which of these is a simplified form of the equation 9p + 3 = – p + 7 + 2p + 3p? (1 point)


5p = 4
15p = 10
9 = 4
12 = 13
13. (07.05 MC)
What is the solution to the equation 4x + 2(x – 3) = 3x + x – 12? (1 point)


–3
–1
1
3
14. (07.05 HC)
The work of a student to solve the equation 3(3y – 8) = 10 + 3y is shown below:

Step 1: 3(3y – 8) = 10 + 3y

Step 2: 6y – 5 = 10 + 3y

Step 3: 3y – 5 = 10

Step 4: 3y = 15

Step 5: y = 5

In which step did the student first make an error and what is the correct step? (1 point)


Step 2: 9y – 24 = 10 + 3y
Step 2: 6y + 11 = 10 + 4y
Step 3: 6y – 8 = 3(6 + y)
Step 3: 3(3y – 8) = 7 + y
15. (07.06 LC)
Which statement is true about the equation 4.5z = 4.5z – 4.25 + 6.25? (1 point)


It has no solution.
It has one solution.
It has two solutions.
It has infinitely many solutions.
16. (07.06 MC)
What is the solution to the equation ? (1 point)


n = –2
n = 4
n =
n =

Answer 4

I am really poor at math, but I can perhaps try.

Answer 5

wowse!!!!!

Answer 6

1 question at a time, mam. Please !

Answer 7

flvs?

Answer 8

some online skool :D

Answer 9

flvs = flying vs swimming ???

Answer 10

lol @Nnesha !!!>_>

Answer 11

so can anyone help me plz?

Answer 12

Nnesha, that is a good topic for a compare-contrast paper:) lol

Answer 13

lets start from question 1, but I am only good at math if you are there to help me (lol).
Who know what I will do, but if we do it together, it will be better, wouldn't it?

Answer 14

Yes

Answer 15

What is the value of y in the equation \(\large\color{black}{ 4+y=-3 }\) ?

Please, subtract 4 from both sides for me.

Answer 16

I think #1 is -7

Answer 17

yes, very goot

Answer 18

good*

Answer 19

because 4+-7=-3

Answer 20

and I think #2 is b?

Answer 21

Mona solved an equation incorrectly, as shown below:
```
Step 1: 5x = 30
Step 2: x = 30 - 5
Step 3: x = 25
```
Which statement best explains why Step 2 is incorrect in Mona's solution? (1 point)

A. She did not add 5 to 30.
B. She did not divide 30 by 5.
C. She did not multiply 30 by 5.
D. She did not multiply 30 five times.

yes, B is correct.

Answer 22

yay! and for #3 I have no clue

Answer 23

Now, 3.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
How many solutions does the equation \(\large\color{black}{ -2y + 2y + 3 = 3 }\) have?

One
None
Infinitely many
Three

Answer 24

it is asking, basically:
For how many y-values will the equation above be true ?

Answer 25

you can subtract 2y from sides
\(\large\color{black}{ -2y + 3 = -2y+3 }\)

Answer 26

\(\large\color{black}{ -2y + 3 = -2y+3 }\)
is this statement true when y=1?
when y=2?
when y=(any number) ?

Answer 27

that would leave 3=3

Answer 28

if you subtract -2y from both sides?

Answer 29

the statement (initial statement) would leave 3=3

Answer 30

if you just simplify the initial statement

Answer 31

then regardless of what value is, we will still be having 3=3

Answer 32

so the answer for #3 is ?

Answer 33

what do you mean by 3!?

Answer 34

3! means 1 times 2 times 3 in math
(it is a factorial)

Answer 35

if you said that it was option 3, then it is corect

Answer 36

yes

Answer 37

What is the value of x in the equation 4(2x + 14) = 0? (1 point)

9
7
-7
-9

Answer 38

so C??????????????????? for #3

Answer 39

yes, for #3

Answer 40

okay thats what i thought yay

Answer 41

What is the value of x in the equation 4(2x + 14) = 0? (1 point)

4(2x + 14) = 0

steps
1. divide both sides by 4
2. subtract 14 from both sides
3. divide both sides by 2

Answer 42

so dividing 4 by 2 and 14?

Answer 43

?

Answer 44

0 / 4 = ?

Answer 45

4(2x + 14) \ 4
(cancels the 4's), and you get
= ?

Answer 46

0/4=0

Answer 47

@SolomonZelman