Algebra I All-in-One For Dummies. Mary Jane Sterling

Algebra I All-in-One For Dummies

Algebra I All-in-One For Dummies - Mary Jane Sterling

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Use the greater-than-or-equal-to symbol.

      23 math. You subtract the 8 from the 9, and you add the 2x and 7x to get 9x. (It’s like adding 2 apples to 7 apples!)

      24 math. Both 14y and math are divisible by 14. So you write the 14 outside the parentheses and put the division results inside the parentheses.

      25 math. The only number you can add to 8 to get a result of 10 is 2.

      26 Yes, they are both solutions. math and math

      If you’re ready to test your skills a bit more, take the following chapter quiz that incorporates all the chapter topics.

      Complete each problem. You can find the solutions and explanations in the next section.

      1 Which of the following numbers can be termed rational?

math

      2 Which of the following is a solution of the equation math?

      A) 5 B)math C) 14 D) 15 E) 16

      3 How many terms are there in math?

      4 What is the exponent in math?

      5 Which of the following is: “the product of four times the difference between x and eight divided by the sum of nine and math”?

      A) math B) math C) math D) math E) math

      7 Write the following using the corresponding mathematical symbols: “The difference between 9 and z is less than the product of 9 and z.”

      8 How many terms are there in math?

      9 What is a common factor of the terms math?

      10 Which of the following numbers can be termed real?

math

      11 What is the constant term in math?

      12 What is the coefficient in math?

      13 Place the following numbers on the number line: math

Schematic illustration of a number line ranges from -2 to 2.

      14 Write the following using the corresponding mathematical symbols: “The square root of 20 is about 4.5.”

      1 math. All of the terms are rational except for math. The number math is an integer and is rational, because it can be written as a fraction such as math. The number math is already written as a fraction and is rational. The number math is a terminating decimal and can be written as math or math. The number 102 is a whole number and can be written as a fraction over 1. The number math is imaginary, so it can’t be a rational number.

      2 C. 14. Replacing the x with 5, you get math, which is not equal to 3. Replacing the x with math, you get math, which is not equal to 3. Replacing the x with 15, you get math, which is not equal to 3. Replacing the x with 16, you get math, which is not equal to 3. Replacing the x with 14, you get math, which IS equal to 3.

      3 1. The 2x multiplies a binomial, making the expression all one term. There are two terms in the parentheses, but the expression is still just one term.

      4 2. There are two exponents, each on the terms in the parentheses. They are both 2.

      5 B. The answer math only multiplies the x and not the 8. The answer math finds the sum of x and 8, not the difference. The answer math has the 4 multiplier in the denominator instead of the numerator. And the answer math has reversed the numerator and denominator.

      6 math. The quotient

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