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Thepotemich [5.8K]
3 years ago
12

Selecting 3 coins, assume there are 5 dimes, 4 nickels, and 2 quarters. In how many possible ways can the selection be made so t

hat the value of the coins is at least 25 cents?
Mathematics
1 answer:
tamaranim1 [39]3 years ago
5 0
The answer is that there are two ways to pick 3 coins and get 25 cents.
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Mention the commutativity associative and distributive properties of rational number
evablogger [386]

Answer:

Associative property: a + (b + c), a – (b – c) ≠ (a – b) – c, a × (b × c) = (a × b) × c, and a ÷ (b ÷ c) ≠ (a ÷ b) ÷ c

When a = ½ and b = ¾

Now, for checking a × b = b × a, consider LHS and RHS.

LHS = a × b = ½ × ¾ = ⅜

RHS = b × a = ¾ × ½ = ⅜

Thus, LHS = RHS (Hence proved)

Step-by-step explanation:

6 0
3 years ago
2(x-1)+4x=3(x-1)+7 I need to solve to see if it solves, has no solution, or infinitely many solutions.
gladu [14]
It should have 1 solution, x = 2. :)
7 0
3 years ago
When Richards solved the equation 2(x - 5) = 56 + 6(x - 5), he used the distributive property in step one to write an equivalent
satela [25.4K]

The equivalent equation after applying distributive property will be:

(2*x) - (2*5) = 56 + (6*x) - (6*5)

Further explanation:

Distributive property states that the number is distributed to the sum or difference it is being multiplied to i.e.

a(b+c) = a*b + a*c

So the given equation is:

2(x - 5) = 56 + 6(x - 5)

2 will be distributed to x-5 and 6 will be distributed to x-5

The equivalent equation will be:

(2*x) - (2*5) = 56 + (6*x) - (6*5)\\Simplifying\\2x-10 = 56+6x-30\\2x-6x = 56-30+10\\-4x = 36\\x=-9

Keywords: Equations, Distributive property

Learn more about distributive property at:

  • brainly.com/question/5639299
  • brainly.com/question/2369634

#LearnwithBrainly

4 0
3 years ago
What is 25/30 as a percent and decimal
torisob [31]
Solving 25 / 30 in percent.
25 / 30 * 100
= 25 / 3 *10
=250 / 3
= 83.3 Ans

Solving 25 / 30 in decimal
25 / 30
= 0.833 Ans
8 0
3 years ago
Read 2 more answers
PLEASE HELP ME I HAVE BEEN IN THIS QUESTION FOR MORE THAN 10 MINUTES PLEASE HELP
Vadim26 [7]

Answer:

31.40 ft^2

Step-by-step explanation:

You are trying to find the circumference, C = 2 * r * 3.14

1. To get the radius you divide the diameter by 2: 10 / 2 = 5

2. Plug your radius into the equation

C = 2 * 5 * 3.14

3. Your final answer should be 31.40 ft^2

6 0
3 years ago
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