1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mezya [45]
3 years ago
5

Dai is comparing how many trading cards he has with his friend Maura. Initially, they find that Dai has four more cards than twi

ce the number that Maura has. Part B) If Dai must give Maura 8 cards so that they have the same amount, set up and solve an equation to determine the number of cards Maura initially had.
Mathematics
1 answer:
Marta_Voda [28]3 years ago
3 0

Answer:

Maura had 12 cards initially

Step-by-step explanation:

Represent Dai's card with D and Maura's card with M.

From the first statement, we understand that:

D = 4 more that twice of M

This is represented as:

D = 4 + 2M

From the second statement, we understand that.

When 8 is subtracted from D, M is increased by 8 and both are equal.

This is represented as:

D - 8 = M + 8

Hence, the equations of the system is:

D = 4 + 2M

D - 8 = M + 8

Substitute 4 + 2M for D in the second equation

4 + 2M - 8 = M + 8

Collect like terms

2M - M = 8 - 4 + 8

M = 12

To solve for D, we simply substitute 12 for M in D = 4 + 2M

D = 4 + 2 * 12

D = 4 + 24

D = 28

Hence, Maura had 12 cards initially

You might be interested in
Simplify this expression.<br> 4(9n-9)<br><br> a. -10n+20<br> b. -10n+19<br> c. 36n-36<br> d. -8n+56
lesya692 [45]
<span>4(9n-9)
= 4*9n -4*9 (distributive property)
= 36n -36

The correct answer is c. </span>36n -36~
8 0
3 years ago
Read 2 more answers
DO THESE ON A PIECE OF PAPER! PLEASE HELP! QUICK!!DO ALL OF THEM!!!
bogdanovich [222]

Answer:

i cant sseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Step-by-step explanation:

the picture

6 0
2 years ago
Read 2 more answers
(3x – 5 – 7x2) – (–2 + 6x2 – 5x)
Gemiola [76]

Answer:

8x-13x²-3

Step-by-step explanation:

you first have to work with the negative sign and the brackets by multiplying the negative sign by everything in the second brackets

3x-5-7x²+2-6x²+5x

then group the like terms

3x+5x-7x²-6x²+2-5

8x-13x²-3

I hope this helps

6 0
3 years ago
altlantic auditorium has 850 seats. Tickets were sold for 816 of the seats. For what percent of the seats were tickets sold?
Jobisdone [24]
816/850x100 = 96

Therefore 96 % of tickets were sold.
5 0
3 years ago
Read 2 more answers
Pleqse help me do this thank you​
SpyIntel [72]

Answer:

84 grams; 5 ounces

Step-by-step explanation:

1oz = 28g

3*1oz = 3*28g

3 oz =  84g

140g = 5*28g = 5*1oz

140g = 5oz

5 0
3 years ago
Other questions:
  • The solution system to 3y-2x=-9 and y=-2x+5
    14·1 answer
  • 2X-4&lt;4 or 3x+10 equal to or greater than 37
    15·1 answer
  • Write an equation of the line perpendicular to the given line that contains P.
    9·2 answers
  • Carol has 1 5/8 cups of yogurt to make smoothies. Each smoothie uses 1/3 cup of yogurt. What is the maximum number of smoothies
    7·1 answer
  • Answer, please. Thanks in advance
    6·1 answer
  • Write the number 5267 correct to<br> the nearest hundred.
    15·1 answer
  • Use the net to find the size of the base and the height of each triangular face of this square pyramid.
    5·2 answers
  • Berapa jika ½+¾ dan dijadikan sebagai pecahan desimal?
    10·2 answers
  • Yo can someone help please
    15·1 answer
  • The sum of two numbers is 88 and the second number is 30 more than the first number what is the number and we’re doing writing
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!