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Makovka662 [10]
2 years ago
13

Simplify: 6(2x²-5) = [?] X=-3

Mathematics
2 answers:
Pavel [41]2 years ago
5 0

Answer:

78

Step-by-step explanation:

6(2x²-5)=[?]

Given that x = -3.

Plugging in the value:

  • 6(2(-3²)-5)

Simplifying using PEMDAS,

  • 6(2*9-5)
  • 6(18-5)
  • (6*18)-(6*30)
  • 108 - 30
  • 78

6(2x²-5)=[78]

goldenfox [79]2 years ago
4 0

Answer:

78

Step-by-step explanation:

6(2x² - 5) = [?] if x = -3

6(2(-3)² - 5)

6(2(9) - 5)

6(18 - 5)

6(13) = 78

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Given four values representing counts of quarters, dimes, nickels and pennies, output the total amount as dollars and cents. Out
Anastaziya [24]

They are writing the values of the coins and the sum using their understanding of the computational language Python.

<h3>What is Python?</h3>

Python is a general-purpose, high-level programming language that is interpreted. Code readability is a priority in its design philosophy, which uses substantial indentation. Garbage collection and dynamic typing are features of Python.

<h3>According to the given information:</h3>

Writing code in python      

quarters = int(input())

dimes = int(input())

nickels = int(input())

pennies = int(input())

cents = (quarters*25 + dimes*10 + nickels*5 + pennies)

#convert cents to dollars

# 1 dollar = 100 cents

# n cents = n/100 dollars

dollars = cents / 100.00

#Print the amount in dollars up to two decimal places

print("Amount: $"+"{:.2f}".format(dollars))

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I understand that the question you are looking for is:

In python 3.17 LAB: Convert to dollars

Given four values representing counts of quarters, dimes, nickels and pennies, output the total amount as dollars and cents

Output each floating-point value with two digits after the decimal point, which can be achieved as follows:

print(f'Amount: ${dollars:.2f}'

Ex: If the input is

4

3

2

1

where 4 is the number of quarters, 3 is the number of dimes, 2 is the number of nickels, and 1 is the number of pennies, the output is:

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For simplicity, assume input is non-negative

7 0
2 years ago
How to solve this equation by getting a value and b value
goblinko [34]

Answer:

a=±5

Step-by-step explanation:

25=5^2

Given that,  x^2−10x+25=x^2−10x+5^2

Identity: a^2−2(ab)+b^2=(a-b)^2

Here, a=x and b=5

∴=(x−5)^2

Hope this helps

3 0
4 years ago
An online DVD rental site charges a monthly membership fee of $10,
Taya2010 [7]

Answer:

666

Step-by-step explanation:

5 0
3 years ago
Simplify the expression by combining like terms.2x + 4y + 6 + 2y - 5 + 3x
zlopas [31]

Answer:

Step-by-step explanation:

Here is the workings

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2x+3x+4y+2y+6-5

Step 2

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5x+4y+2y+6-5

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Step 3

5x+6y+6-5  Add and subtract

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3 years ago
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