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Sidana [21]
3 years ago
13

Herbert gave 4 friends an equal number of baseball cards. Each friend received 18 baseball cards. Write and solve an equation to

find the total number of baseball cards Herbert had. Use the letter c to represent the variable in the equation. I WILL GIVE THE BRAINLIEST!
Mathematics
1 answer:
Maksim231197 [3]3 years ago
4 0

Answer:

Total # of cards: 72 cards

Step-by-step explanation:

If T represents the total number of baseball cards, and c represents the number of cards each friend receives then the formula for this will be

T = 4c

To solve for T, just insert the number of cards each friend received

c = 18

T = 4(18) = 72

Therefore, Herbert had a total of 72 cards

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Prove that for any value of x the value of the expression (x–3)(x+7)–(x+5)(x–1) is equal to –16.
Pachacha [2.7K]

For any value of x the value of the expression (x–3)(x+7)–(x+5)(x–1) is equal to –16.

Step-by-step explanation:

In order to prove the statement we can take any value of x and then solve the expression to see if it equal to -16 or not.

So,

Taking x = 2

=(x-3)(x+7)-(x+5)(x-1)\\=(2-3)(2+7)-(2+5)(2-1)\\=(-1)(9)-(7)(1)\\=-9-7=-16

Taking x = 5

=(x-3)(x+7)-(x+5)(x-1)\\=(5-3)(5+7)-(5+5)(5-1)\\=(2)(12)-(10)(4)\\=24-40\\=-16

Taking x= 10

=(x-3)(x+7)-(x+5)(x-1)\\=(10-3)(10+7)-(10+5)(10-1)\\=(7)(17)-(15)(9)\\=119-135=-16

Hence,

For any value of x the value of the expression (x–3)(x+7)–(x+5)(x–1) is equal to –16.

Keywords: Polynomials, expressions

Learn more about polynomials at:

  • brainly.com/question/10941043
  • brainly.com/question/10978510

#LearnwithBrainly

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