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3 years ago

Please help I’ll mark you as brainliest if correct!

Mathematics

1 answer:

saw5 [17]3 years ago

6 0

This is a classic riddle.3 quarters4 dimes0 nickels4 pennies If you have 4 quarters, you have change for 1 dollar.If you have 5 dimes, you have change for 2 quarters.If you have any nickels, 1 of those could combine with 2 dimes to have change for a quarter.If you have 5 pennies, you have enough change for 1 nickel. 3 * .25 + 4 * .10 + 4* .01 = x.75 + .40 + .04 = x1.19 = x

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Read 2 more answers

Tell whether -3 is a solution of the inequality 3-4r >_ 15

iragen [17]

Answer:

-3 is a solution.

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

3 - 4r ≥ 15

Step 2: Solve for r

[Subtraction Property of Equality] Subtract 3 on both sides: -4r ≥ 12
[Division Property of Equality] Divide -4 on both sides: r ≤ -3

Step 3: Compare

Substitute in r: -3 ≤ -3

This is true. -3 is less than or equal to -3.

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