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3 years ago

Ose has 50 coins in a jar. 20% are nickels, 40% are quarters, and the rest are pennies. (6.RP.3c-Benchmark #3)

Mathematics

2 answers:

____ [38]3 years ago

7 0

Answer:

Part A: pennies are 40% of the jar

Part B :

Nickels: 10

Quarters: 20

Pennies: 20

Step-by-step explanation:

Part A: since the nickels and quarters make up 60% of the jar the pennies make up the other 40%.

Part B:

Nickels: 20 percent of 50 (the amount of coins in the jar) is 10

Quarters & Pennies (since they have the same percentage): 40 percent of 50 is 20

cupoosta [38]3 years ago

5 0

Answer:

Part A: 40% are pennies

Part B: NIckels 10, Quarters 20, Pennis 20

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Step-by-step explanation:

Step 1: Define

3(x - 2) + 8 = 2(x + 5)

Step 2: Solve for x

(Parenthesis) Distribute: 3x - 6 + 8 = 2x + 10
Combine like terms: 3x + 2 = 2x + 10
{Subtraction Property of Equality] Subtract 2x on both sides: x + 2 = 10
[Subtraction Property of Equality] Subtract 2 on both sides: x = 8

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x: 3(8 - 2) + 8 = 2(8 + 5)
(Parenthesis) Subtract/Add: 3(6) + 8 = 2(13)
Multiply: 18 + 8 = 26
Add: 26 = 26

Here we see that 26 does indeed equal 26.

∴ x = 8 is the solution to the equation.

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2 years ago

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Answer:

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b. View graph

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Step-by-step explanation:

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3 years ago

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