Question

9. What is the value of
x/y when x = -16 and y =
4
a) 4
*b) -12
c) -4
d) 12

Answer 1

replace every x with -16
replace every y with 4

so `x/y = (-16)/(4) = ???`

Answer 2

okay so replace -16/4

Answer 3

or \[-16\div4\]

Answer 4

so d???

Answer 5

what is 16 over 4 equal to?

Answer 6

whatever that result is, make it negative

since we have negative over positive = negative

Answer 7

-4

Answer 8

correct

Answer 9

Can you help me with one
more

Answer 10

sure

Answer 11

10.Simplify the
expression.
5by
-2y
a) -5b/2
b) 5b/2
c) -10 by
*d)-5y/2

Answer 12

5by over -2y ??

Answer 13

is `5by over -2y` the original expression ?

Answer 14

original

Answer 15

notice how the y terms will cancel

Answer 16

and how

positive over negative = negative

Answer 17

so you'll end up with `-5b/2`

Answer 18

1. What is the simplified
form of the expression?
3t2 + 8m + 4t2 + 5m - 2m
a) 3t2 + 13m
*b) 7t2 + 11m
c) 7t2 + 15m
d) 4t2 + 11m
2. Simplify the following
expression.
*5(9x - 4)
a) 14x
b) 14x - 9
c) 45x - 20
d) 45x + 20
3.Which property is
illustrated by the
statement?
3+5x = 5x+3
*a) commutative property of
addition
b) associative property
c) distributive property
4. To which subset(s) of
the real numbers does
the number -76 belong?
a) rational
b) irrational
*c) integers, whole numbers,
rational numbers
d) integers, rational
numbers
5. What is the algebraic
expression for for the
following word phrase:
a) r+8
b) r/8
*c) 8r
Name
the quotient of r and 8? d) r-8
6. What is the
difference? -9-7
a) -2
b) 2
*c)-16
d) 16
7. What is the product?
7 (-3)
a) -10
b) 4
c) 21
*d) -21
8. Simplify the
expression. (3/5)4
a) 1
b) 12/20
*c) 81/625
d) 7/9
9. What is the value of
x/y when x = -16 and y =
4
a) 4
b) -12
*c) -4
d) 12
10.Simplify the
expression.
5by
-2y
a) -5b/2
b) 5b/2
c) -10 by
d)-5y/2

Answer 19

Got all them right?

Answer 20

what did you get for #2

Answer 21

the first one

Answer 22

#2

Distribute
5(9x - 4) = 5*(9x) + 5(-4) = 45x - 20

Answer 23

#4 is wrong because the set of whole numbers is this set

W = {0,1,2,3,4,5,6,....}

basically all the positive whole numbers and 0

Answer 24

So whats the answer

Answer 25

if you want to talk about negative numbers without decimal parts, you refer to the set of integers

Z = {..., -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, ...}

Answer 26

Rational?

Answer 27

-76 is rational and an integer

Answer 28

#5 is wrong too

Answer 29

whats that one?

Answer 30

quotient means result after dividing

Answer 31

r\8

Answer 32

r/8

Answer 33

everything else looks good

Answer 34

Thank you so much

Answer 35

no problem

Answer 36

What is the correct Order of Operations?

Answer 37

@jim_thompson5910

Answer 38

PEMDAS

http://www.webquest.hawaii.edu/kahihi/mathdictionary/images/PEMDAS.png