Which of the following statements are true of rational numbers? Check all that are true.

a. Rational numbers can be written as fractions.

b. Decimals that can be written as fractions are rational numbers.

c. Repeating decimals are rational numbers because they can be written as fractions.

d. A rational number can be written as one integer divided by another integer.

e. A rational number can have zero as the denominator.

Rational numbers are simply numbers that can be written as fractions or ratios Real Numbers: Any number that can name a position on a number line is a real number An integer can be written as a fraction simply by giving it a  These numbers include the non-terminating, non-repeating decimals (pi

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x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15