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ioda
3 years ago
6

The model shows the expression 21 + 9. A model with 3 rows of 7 squares and 3 rows of 3 squares. Which expression is equivalent

to this sum? 3 (7 + 3) 3 (7) + 3 3 + 7 + 3 7 (3 + 3)
Mathematics
2 answers:
DaniilM [7]3 years ago
7 0

Answer: the answer is 3(7+3)

Step-by-step explanation: since 7+3 is in paranthases you add them first to get 10 and you multiply it by the 3 to get 30. We know its correct because 21+9=30.

timofeeve [1]3 years ago
3 0

Answer:the awnser is 3(7+3 ) Step-by-step explanation: I took the quiz today hope u get it right!

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Solve (4q+3)(q+2)=0.<br><br> q= <br> , q=
hram777 [196]
Either factor in paren can be equal 0

so either q=-2

or q=-3/4
5 0
3 years ago
Solve for c.<br> a(b-c)=d
Lisa [10]

Answer:

D: c=(ab-d)/a

Step-by-step explanation:

a(b-c)=d

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ab-d=ac

(ab-d)/a=c

5 0
3 years ago
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Shaneya purchased a membership to play basketball at her local gym. The membership costs $450 for the year, plus she pays $10 to
olga55 [171]

Answer:

55

Step-by-step explanation:

So start with the total 1,000

then take the 1,000 and minus it by the 450 year so then you can see how much money you have left for the times that she can go to the gym to play.

1,000 - 450 = 550

Now you 550 dollars because basic math. Then you divide the number you got which the number you got was 550 so 550÷10 you divide it by 10 because the rent is 10 each time.

550 ÷ 10 = <u>55</u>

Now you get 55 so that means she can got to the gym 55 times before she goes over 1,000 dollars!

Hoped this helped. Don't forget a middle school person did this so I bet you could have too!

6 0
3 years ago
4.3*(-3.2)*0 positive or negative or zero Help
iragen [17]
I think it's 0 since anything multiplied by 0 is, well, 0! No matter what the sign is. I believe the correct answer is 0 :)
4 0
3 years ago
Read 2 more answers
5/7 divided by 20/5 <br> then simply it completely
Pavlova-9 [17]

Answer:

5 / 28

Step-by-step explanation:

5/7 ÷ 20/5

= 5/7 x  5/20

= (5 x 5) / (7 x 20)

= 25 / 140    (divide numerator and denominator by 5)

= 5 / 28

5 0
3 years ago
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