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nika2105 [10]
3 years ago
15

Yesterday, Mary had n baseball cards. Today, she gave 18 away. Using n , write an expression for the number of cards Mary has le

ft.​
Mathematics
1 answer:
german3 years ago
8 0

Answer:

n-18

Step-by-step explanation:

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Simplify (8j^3-10j^2-7)-(6j^3-10j^2-j+12)
Y_Kistochka [10]
The first step for solving this expression is to remove the first set of parenthesis.
8j³ - 10j² - 7 - (6j³ - 10j² - j + 12)
When there is a "-" sign in front of the parenthesis,, you must change the sign of each term in the parenthesis. This will look like the following:
8j³ - 10j² - 7 - 6j³ + 10j² + j - 12
Eliminate the opposites in the expression
8j³ - 7 - 6j³ + j - 12
Collect the first set of like term (ones with j³) 
2j³ - 7 + j - 12
Calculate the difference between basic numbers
2j³ - 19 + j
Lastly,, use the commutative property to reorder the terms
2j³ + j - 19
Since you cannot simplify this expression any further,, the correct answer to your question is 2j³ + j - 19.
Let me know if you have any further questions
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8 0
3 years ago
A train traveled 210 miles in 3.5 hours to its first stop. It then continued on traveling another 130 miles in 2.5 hours. Wut is
vitfil [10]

Answer:

if you are adding the hours in total it is 6 hours but if you are adding the miles it is 340 miles

Step-by-step explanation:

6 0
3 years ago
Which is odd one out? Explain how you know?
andrey2020 [161]

the answer is 15 ten thousand because all the other except this is equal to 15,000

5 0
3 years ago
Which system.of equations is represented in the graph?
iVinArrow [24]
Where is the graph.
8 0
3 years ago
The students in Tisha's grade voted to select a guest speaker. 75% of the students voted for a famous athlete. If there are 52 s
tensa zangetsu [6.8K]

Answer:

39

Step-by-step explanation:

75% of 52 is 39

Hope this helps!

8 0
3 years ago
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