Question

What is the sign of the product (–7)(–2)(–5)(1)?

Positive, because the products (–7)(–2) and (–5)(1) are negative, and the product of two negative numbers is positive
Positive, because the products (–7)(–2) and (–5)(1) are positive, and the product of two positive numbers is positive
Negative, because the product (–7)(–2) is positive, and the product (–5)(1) is negative and the product of a positive and a negative number is negative
Negative, because the products (–7) (–2) and (–5) (1) are negative and the product of two negative numbers is negative

Answer 1

@Jhannybean @e.mccormick

Answer 2

@AndrewTheCookie @Michele_Laino

Answer 3

Pls i just need the answers. I know how to solve them but im in a hurry

Answer 4

please note that:
\[(-)*(-)=(+)\]
so:
\[(-)*(-)*(-)=(+)*(-)=(-)\]

Answer 5

so?

Answer 6

I'm confused between A and B

Answer 7

I think that they are both wrong!

Answer 8

Really?

Answer 9

really!

Answer 10

So then which one is it??

Answer 11

it is C.

Answer 12

Thanks can you help with some more??

Answer 13

yes!

Answer 14

Eva is showing her work in simplifying (7.3 – 7.2) – 3.8 + 3.7. In which step did Eva make an error?

Step 1: (7.3 – 7.2) – 3.8 + 3.7

Step 2: 7.3 + (–7.2 – 3.8) + 3.7 (commutative property)

Step 3: 7.3 – 11 + 3.7

Step 4: 7.3 + 3.7 – 11 (commutative property)

Step 5: 11 – 11 = 0

Step 2; she wrote commutative instead of distributive
Step 4; she wrote commutative instead of distributive
Step 4; she wrote commutative instead of associative
Step 2; she wrote commutative instead of associative

Answer 15

I think it is:
"Step 2; she wrote commutative instead of associative"

Answer 16

Thanks@!!!

Answer 17

because at step 2, Eva has applied the associative property of addition

Answer 18

Simplify Negative 3 over 2 ÷ 9 over 6.

–4
–1
4
1

Answer 19

divided sign then -

Answer 20

yes I think, namely:
\[\frac{ \frac{ -3 }{ 2 } }{ \frac{ 9 }{ 6 } }=\]
the first fraction times the inverse of the second fraction, namely:
\[\frac{ -3 }{ 2 }*\frac{ 6 }{ 9 }=...\]

Answer 21

so?

Answer 22

-18 / 18

Answer 23

and then?

Answer 24

divide?

Answer 25

\[\frac{ 18 }{ 18 }=1\]

Answer 26

d?

Answer 27

so:
\[\frac{ -18 }{ 18 }=...\]

Answer 28

-1

Answer 29

that's right!

Answer 30

so B.

Answer 31

Tanisha opened a bank account. She deposited $74.50 into her account every month for 10 months. She used $32.50 every month to pay for painting classes. After 10 months, she used 1 over 2 of the total money left in her account to go to a summer camp for painters. What is the total amount of money Tanisha spent to go to the summer camp?

$210.00
$325.00
$420.00
$840.00

Answer 32

A 210.000

Answer 33

$210.00

Answer 34

every mont Tanisha deposits 74.50$, and every month she spent 32.50$, so every month Tanisha deposit is equal to 42.00$.
Now after 10 months, Tanisha bank account is of 42*10=420.00$
Since Tanisha uses only one half of that sum, she uses 420/2=...

Answer 35

Simplify negative 2 and 1 over 9 – negative 4 and 1 over 3.

2 and 2 over 9
negative 6 and 4 over 9
negative 2 and 2 over 9
6 and 4 over 9

Answer 36

that's right!

Answer 37

the ? = -

Answer 38

2 and 1/9=19/9

Answer 39

negative 4 and 1 over 3=-(4 1/3)=-13/3
so you have to calculate this:
\[\frac{ 19 }{ 9 }-\left( -\frac{ 4 }{ 3 } \right)=...\]

Answer 40

3.4

Answer 41

no, 3.5 @Michele_Laino

Answer 42

oops sorry:
so you have to calculate this:
\[\frac{ 19 }{ 9 }-\left( -\frac{ 13 }{ 3 } \right)\]

Answer 43

hmmm

Answer 44

6.5 @Michele_Laino

Answer 45

please, note that:
\[\frac{ 19 }{ 9 }-\left( -\frac{ 13 }{ 3 } \right)=\frac{ 19 }{ 9 }+\frac{ 13 }{ 3 }=...\]

Answer 46

It is 6.5

Answer 47

32/12?

Answer 48

wait, please...
\[\frac{ 19 }{ 9 }+\frac{ 26 }{ 9 }=\frac{ 45 }{ 9 }=5\]

Answer 49

A?

Answer 50

You don't have to explain it though ;)

Answer 51

no, please I have made an error of sign,
we have to calculate this:

Answer 52

\[-\frac{ 19 }{ 9 }-\left( -\frac{ 13 }{ 3 } \right)=-\frac{ 19 }{ 9 }+\frac{ 13 }{ 3 }=\]
\[=-\frac{ 19 }{ 9 }+\frac{ 26 }{ 9 }=\frac{ 7 }{ 9 }\]

Answer 53

pleas another error, I'm very sorry:
\[=-\frac{ 19 }{ 9 }+\frac{ 39 }{ 9 }=\frac{ 20 }{ 9 }=\]
= 2 and 2/9

Answer 54

so A.

Answer 55

because:
\[\frac{ 20 }{ 9 }=2+\frac{ 2 }{ 9 }\]

Answer 56

thx

Answer 57

Sally swam a total distance of 3 and 1 over 2 miles during the months of November and December. If Sally only swam 1 over 4 of a mile every day, which expression shows the number of days she went swimming?

3 and 1 over 2 ⋅ 1 over 4
3 and 1 over 2 ÷ 1 over 4
3 and 1 over 2 + 1 over 4
3 and 1 over 2 – 1 over 4

Answer 58

What about this one @Michele_Laino

Answer 59

I think B. because we have to divide the total distance over the unitary distance, namely the distance that Sally swam every day