ACT Math Practice

ACT Math Practice

Assessment

Flashcard

Mathematics

9th Grade

Practice Problem

Hard

CCSS
8.EE.C.7B, 6.NS.C.7C, 7.NS.A.1D

+10

Standards-aligned

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the formula for permutations when selecting r items from n items?

Back

The formula for permutations is P(n, r) = n! / (n - r)!.

2.

FLASHCARD QUESTION

Front

How do you calculate the total arrangements of 3 plants selected from 6 different types?

Back

Use the permutation formula: P(6, 3) = 6! / (6 - 3)! = 6! / 3! = 120.

3.

FLASHCARD QUESTION

Front

What is the definition of a mixture in chemistry?

Back

A mixture is a combination of two or more substances where each substance retains its own properties.

4.

FLASHCARD QUESTION

Front

How do you find the percentage of a component in a mixture?

Back

Percentage = (Amount of component / Total amount of mixture) * 100.

5.

FLASHCARD QUESTION

Front

What is the formula to find the new concentration after adding a solvent?

Back

Let x be the amount of solvent added. New concentration = (Initial solvent + x) / (Total volume + x).

Tags

CCSS.8.EE.C.7B

6.

FLASHCARD QUESTION

Front

What does the absolute value of a number represent?

Back

The absolute value of a number represents its distance from zero on the number line, regardless of direction.

Tags

CCSS.6.NS.C.7C

7.

FLASHCARD QUESTION

Front

Back

Tags

CCSS.7.NS.A.1D

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