anonymous
  • anonymous
help :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
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M_M13
  • M_M13
what's your question? :)
anonymous
  • anonymous
@Michele_Laino

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Michele_Laino
  • Michele_Laino
we have: 3/2= 1.5, and 3/4 = 0.75
anonymous
  • anonymous
so c!
Michele_Laino
  • Michele_Laino
correct!
anonymous
  • anonymous
next!
anonymous
  • anonymous
Peter earned $180 working at a store during the summer months. He bought 4 books worth $12 each from his earnings at the store. How much money was left after he bought the books? $33 $42 $132 $228
Michele_Laino
  • Michele_Laino
the remaining money is: \(180-48=...?\)
Michele_Laino
  • Michele_Laino
since he spent \(12 \cdot 4=48$\)
anonymous
  • anonymous
132
Michele_Laino
  • Michele_Laino
ok!
anonymous
  • anonymous
c?
Michele_Laino
  • Michele_Laino
of course!
anonymous
  • anonymous
ok next! :)
anonymous
  • anonymous
Ada is showing her work in simplifying (5.9 – 1.8) – 6.2 + 4.1. In which step did Ada make an error? Step 1: (5.9 – 1.8) – 6.2 + 4.1 Step 2: 5.9 + (–1.8 – 6.2) + 4.1 (associative property) Step 3: 5.9 – 8 + 4.1 Step 4: 5.9 + 4.1 – 8 (associative property) Step 5: 10 – 8 = 2 Step 2; she wrote associative instead of commutative Step 2; she wrote associative instead of distributive Step 4; she wrote associative instead of commutative Step 4; she wrote associative instead of distributive
Michele_Laino
  • Michele_Laino
when I swap two operands, I'm applying the commutative property
anonymous
  • anonymous
A?
Michele_Laino
  • Michele_Laino
I think A is a wrong option
anonymous
  • anonymous
c?
Michele_Laino
  • Michele_Laino
correct!
anonymous
  • anonymous
next!
Michele_Laino
  • Michele_Laino
next please
anonymous
  • anonymous
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anonymous
  • anonymous
A?
Michele_Laino
  • Michele_Laino
please wait a moment, I have to answer to my phone
anonymous
  • anonymous
ok :)
Michele_Laino
  • Michele_Laino
ok! I'm here
Michele_Laino
  • Michele_Laino
we can write this: \[2\frac{1}{9} - \left( { - 4\frac{1}{3}} \right) = - \frac{{19}}{9} + \frac{{13}}{3} = \frac{{ - 19 + 39}}{9} = ...?\]
anonymous
  • anonymous
20
anonymous
  • anonymous
20 / 9 ?
Michele_Laino
  • Michele_Laino
oops... \[ - 2\frac{1}{9} - \left( { - 4\frac{1}{3}} \right) = - \frac{{19}}{9} + \frac{{13}}{3} = \frac{{ - 19 + 39}}{9} = ...?\]
Michele_Laino
  • Michele_Laino
correct!
Michele_Laino
  • Michele_Laino
now, we have: \[20:9 = 2 \cdot 9 + 2\]
anonymous
  • anonymous
20
Michele_Laino
  • Michele_Laino
being: \[20:9 = 2 \cdot 9 + 2\] what is the right option?
anonymous
  • anonymous
A?
Michele_Laino
  • Michele_Laino
correct!
Michele_Laino
  • Michele_Laino
oops.. I have made an error, the right expression is: \[20 = 2 \cdot 9 + 2\]
anonymous
  • anonymous
right A?
Michele_Laino
  • Michele_Laino
yes!
anonymous
  • anonymous
ok next! :)
anonymous
  • anonymous
What is the sign of the product (–5)(–3)(–8)(–6)? Positive, because the products (–5)(–3) and (–8)(–6) are negative, and the product of two negative numbers is positive Positive, because the products (–5)(–3) and (–8)(–6) are positive, and the product of two positive numbers is positive Negative, because the products (–5)(–3) and (–8)(–6) are negative, and the product of two negative numbers is negative Negative, because the products (–5)(–3) and (–8)(–6) are positive, and the product of two positive numbers is negative
Michele_Laino
  • Michele_Laino
hint: you have to apply the sign rule: \(- \cdot -=+\)
Michele_Laino
  • Michele_Laino
and: \( + \cdot +=+\)
anonymous
  • anonymous
b?
Michele_Laino
  • Michele_Laino
correct!
anonymous
  • anonymous
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
Michele_Laino
  • Michele_Laino
we have to divide the total distance by the unit distance
anonymous
  • anonymous
b?
Michele_Laino
  • Michele_Laino
correct!
anonymous
  • anonymous
Michelle bought 2 tickets to a zoo. After she bought the tickets, her account balance showed a change of –$33.04. What would have been the change to Michelle's account balance had she only bought 1 ticket to the zoo? –$16.52 $16.52 $16.50 –$16.50
Michele_Laino
  • Michele_Laino
since two ticket cost 33.04$ then one ticket costs: \(33.04: 2=...?\)
Michele_Laino
  • Michele_Laino
tickets*
anonymous
  • anonymous
16.52
Michele_Laino
  • Michele_Laino
correct!
anonymous
  • anonymous
next!
anonymous
  • anonymous
wait is it A?
Michele_Laino
  • Michele_Laino
yes!
anonymous
  • anonymous
oh ok next! :)
anonymous
  • anonymous
Which of the following describes a situation in which the total distance a hockey player travels is 0 meter from his starting point? The player skates 0 meter forward and then skates 8 meters in the opposite direction. The player skates 9 meters forward and then skates 8 meters in the opposite direction. The player skates 12 meters forward and then skates 0 meter in the opposite direction. The player skates 12 meters forward and then skates 12 meters in the opposite direction.
anonymous
  • anonymous
d?
Michele_Laino
  • Michele_Laino
yes!
anonymous
  • anonymous
Which of the following correctly uses absolute value to show the distance between –60 and 11? |–60 – 11| = |–71| = –71 units |–60 + 11| = |–49| = 49 units |–60 + 11| = |–49| = –49 units |–60 – 11| = |–71| = 71 units
Michele_Laino
  • Michele_Laino
total distance is given by the absolute value of the difference between your values
anonymous
  • anonymous
d?
Michele_Laino
  • Michele_Laino
yes!
anonymous
  • anonymous
Jinni opened a bank account. She deposited $87.60 into her account every month for 10 months. She used $25.60 every month to pay for music classes. After 10 months, she used 1 over 4 of the total money left in her account to go to a summer camp for musicians. What is the total amount of money Jinni spent to go to the summer camp? $64.00 $88.00 $155.00 $620.00
Michele_Laino
  • Michele_Laino
deposited money is \(87.60 \cdot 10=...?\)
anonymous
  • anonymous
876
Michele_Laino
  • Michele_Laino
the spent money is: \(25.6 \cdot 10 =...? \)
anonymous
  • anonymous
256
Michele_Laino
  • Michele_Laino
the remaining money is: \(876-256=...? \)
anonymous
  • anonymous
620
Michele_Laino
  • Michele_Laino
and 1 over 4 of 620 is: \(620:4=...?\)
anonymous
  • anonymous
ok so d?
Michele_Laino
  • Michele_Laino
please what is \(620 :4 =...? \)
anonymous
  • anonymous
620
Michele_Laino
  • Michele_Laino
I got \(620 :4 = 155 \), am I right?
anonymous
  • anonymous
yes
Michele_Laino
  • Michele_Laino
so, what is the right option?
anonymous
  • anonymous
c?
Michele_Laino
  • Michele_Laino
correct!
anonymous
  • anonymous
next! :)
anonymous
  • anonymous
1 Attachment
Michele_Laino
  • Michele_Laino
what is: \[\frac{{36}}{2} = ...?\]
Michele_Laino
  • Michele_Laino
\(36:2=...?\)
anonymous
  • anonymous
18
Michele_Laino
  • Michele_Laino
and \(54:3=...?\)
anonymous
  • anonymous
18
Michele_Laino
  • Michele_Laino
and \(90:5=...?\)
anonymous
  • anonymous
every single one is 18 :)
Michele_Laino
  • Michele_Laino
yes!
anonymous
  • anonymous
The regular price of a hooded jacket is $25.75. During a sale, the jacket was marked as 20% off. What was the approximate price of the jacket during the sale? $5.15 $20.60 $21.62 $23.75
Michele_Laino
  • Michele_Laino
the discount is: \(25.75 \cdot 0.2=...?\)
anonymous
  • anonymous
A?
Michele_Laino
  • Michele_Laino
no, it is the first step
anonymous
  • anonymous
oh okay 5.15
Michele_Laino
  • Michele_Laino
ok! So the requested price is: \(25.75-5.15=...?\)
anonymous
  • anonymous
20.6
Michele_Laino
  • Michele_Laino
correct!
anonymous
  • anonymous
Jade measured the height of an art frame as 5.23 feet, but the actual height was 6 feet. What is the percent of error in Jade's measurement? 12.83% 13.55% 14.72% 15.55%
Michele_Laino
  • Michele_Laino
the requested percentage error is given by this computation: \[\frac{{6 - 5.23}}{6} \cdot 100 = ...?\]
anonymous
  • anonymous
12.833333
Michele_Laino
  • Michele_Laino
correct! \(12.83 \%\)
anonymous
  • anonymous
The price of apples at a farm is $1.99 per pound. Which equation can be used to determine c, the total price of n pounds of apples? c = 1.99 over n c = 1.99n c = 1.99 + n c = 1.99 − n
Michele_Laino
  • Michele_Laino
if 1 pound costs \( 1.99 \$ \) then 2 pounds cost \( 1.99 \cdot 2\), 3 pounds cost \( 1.99 \cdot 3\), four pounds cost \( 1.99 \cdot 4\)
anonymous
  • anonymous
b?
Michele_Laino
  • Michele_Laino
yes!
Michele_Laino
  • Michele_Laino
please, now I have to go to have my dinner, see you tomorrow :)
anonymous
  • anonymous
wait... i only have 5 more quick questions.. please help :)
Michele_Laino
  • Michele_Laino
only one question, since I have to go to have my dinner
anonymous
  • anonymous
Lisa surveyed 60 students at her school and found that 0.85 of the students she surveyed said their favorite class is math. Another 15% of the students she surveyed reported that their favorite class is science. How many more students in the survey prefer math over science? 9 15 35 42
Michele_Laino
  • Michele_Laino
students who prefer class of math are: \(60 \cdot 0.85=...?\)
anonymous
  • anonymous
51
Michele_Laino
  • Michele_Laino
students who prefer class of science are: \(60 \cdot 0.15=...?\)
anonymous
  • anonymous
9
Michele_Laino
  • Michele_Laino
and the requested difference is: \(51-9=...?\)
anonymous
  • anonymous
42
Michele_Laino
  • Michele_Laino
correct! ok! see you tomorrow :)

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